PHOT1

Summary

Gene Symbol: PHOT1
Description: phototropin 1
Alias: F16L2.3, JK224, NONPHOTOTROPIC HYPOCOTYL 1, NPH1, PHOTOTROPIN, ROOT PHOTOTROPISM 1, RPT1, phototropin 1
Species: thale cress

Top Publications

  1. ncbi Arabidopsis NPH1: a flavoprotein with the properties of a photoreceptor for phototropism
    J M Christie
    Department of Plant Biology, Carnegie Institution of Washington, 260 Panama Street, Stanford, CA 94305, USA
    Science 282:1698-701. 1998
  2. pmc Domain swapping to assess the mechanistic basis of Arabidopsis phototropin 1 receptor kinase activation and endocytosis by blue light
    Eirini Kaiserli
    Plant Science Group, Division of Molecular and Cellular Biology, Faculty of Biomedical and Life Sciences, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
    Plant Cell 21:3226-44. 2009
  3. doi In vivo phosphorylation site mapping and functional characterization of Arabidopsis phototropin 1
    Stuart Sullivan
    Plant Science Group, Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, University Avenue, Glasgow, Scotland, UK
    Mol Plant 1:178-94. 2008
  4. doi Interaction specificity of Arabidopsis 14-3-3 proteins with phototropin receptor kinases
    Stuart Sullivan
    Division of Molecular and Cellular Biology, Faculty of Biomedical and Life Sciences, University of Glasgow, Glasgow, UK
    FEBS Lett 583:2187-93. 2009
  5. pmc The Arabidopsis PHYTOCHROME KINASE SUBSTRATE2 protein is a phototropin signaling element that regulates leaf flattening and leaf positioning
    Matthieu de Carbonnel
    Center for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland
    Plant Physiol 152:1391-405. 2010
  6. pmc Integration of Phot1, Phot2, and PhyB signalling in light-induced chloroplast movements
    Darron R Luesse
    Department of Biological Sciences, Science Laboratory Building 3326, Southern Illinois University, Edwardsville, IL 62026, USA
    J Exp Bot 61:4387-97. 2010
  7. pmc Phytochrome A regulates the intracellular distribution of phototropin 1-green fluorescent protein in Arabidopsis thaliana
    In Seob Han
    Department of Biological Sciences, University of Ulsan, Ulsan 680 749, Korea
    Plant Cell 20:2835-47. 2008
  8. doi Molecular basis of the functional specificities of phototropin 1 and 2
    Yusuke Aihara
    Department of Botany, Graduate School of Science, Kyoto University, Kyoto 606 8502, Japan
    Plant J 56:364-75. 2008
  9. pmc Blue light-induced autophosphorylation of phototropin is a primary step for signaling
    Shin Ichiro Inoue
    Department of Biology, Faculty of Science, Kyushu University, Ropponmatsu, Fukuoka 810 8560, Japan
    Proc Natl Acad Sci U S A 105:5626-31. 2008
  10. ncbi Functional ecology of a blue light photoreceptor: effects of phototropin-1 on root growth enhance drought tolerance in Arabidopsis thaliana
    Candace Galen
    Division of Biological Sciences, University of Missouri Columbia, Columbia, MO 65211 7400, USA
    New Phytol 173:91-9. 2007

Scientific Experts

  • Masayoshi Nakasako
  • Justyna Łabuz
  • Atsushi Takemiya
  • Akiko Harada
  • Hernan E Boccalandro
  • In Seob Han
  • Martina Königer
  • Takatoshi Kagawa
  • John M Christie
  • Darron R Luesse
  • Satoru Tokutomi
  • Koji Okajima
  • Stuart Sullivan
  • Noriyuki Suetsugu
  • Yihai Wang
  • Ken Ichiro Shimazaki
  • Akira Nagatani
  • Daisuke Matsuoka
  • Masamitsu Wada
  • Christian Fankhauser
  • Eirini Kaiserli
  • Sachiko Kashojiya
  • Shin Ichiro Inoue
  • Yusuke Nakasone
  • Kevin M Folta
  • Matthew A Jones
  • Isabelle Schepens
  • Matthieu de Carbonnel
  • Emmanuel Liscum
  • Patricia Lariguet
  • Suzanne Litthauer
  • A Moni
  • Andrei S Halavaty
  • Toshiaki Kozuka
  • Sam Geun Kong
  • Xiang Zhao
  • Tobias Preuten
  • Motomu Endo
  • Sven Bergmann
  • Emilie Demarsy
  • W R Briggs
  • Diana Roberts
  • Satoshi Ichikawa
  • P Lehmann
  • Melissa Hamner Magerøy
  • Yiping Qi
  • Hitomi Katsura
  • Kazunori Zikihara
  • M Rob G Roelfsema
  • Ullas V Pedmale
  • Catriona E Thomson
  • Bin Kang
  • Yusuke Aihara
  • Ying Lang Wan
  • Xu Chen
  • Takeshi Eitoku
  • Masahide Terazima
  • Candace Galen
  • Hae Young Cho
  • Holger Marten
  • Toshinori Kinoshita
  • Kumi Ueno
  • Winslow R Briggs
  • Martin W Battle
  • A Y Lee
  • Tracy Lawson
  • Takashi Shimada
  • Koji Sakamoto
  • Yan Liang Wang
  • Yoshiyasu Tanigawa
  • Tim Hohm
  • Xiao Zhang
  • Takashi Araki
  • Masato Nakai
  • Lin Dan Wang
  • Xin Rong Qiao
  • Jessica Rodean Justice
  • Chang Shui Xu
  • Shingo Kikuchi
  • Stefanie A Maruhnich
  • Jin Wang
  • Tadashi Murakami
  • Keith Moffat
  • Melissa H Mageroy
  • M Wada
  • T Sakai
  • T Kinoshita
  • Micha Hersch
  • Shrikesh Sachdev
  • S Schmidt von Braun

Detail Information

Publications58

  1. ncbi Arabidopsis NPH1: a flavoprotein with the properties of a photoreceptor for phototropism
    J M Christie
    Department of Plant Biology, Carnegie Institution of Washington, 260 Panama Street, Stanford, CA 94305, USA
    Science 282:1698-701. 1998
    The NPH1 gene of Arabidopsis thaliana encodes a 120-kilodalton serine-threonine protein kinase hypothesized to function as a photoreceptor for phototropism...
  2. pmc Domain swapping to assess the mechanistic basis of Arabidopsis phototropin 1 receptor kinase activation and endocytosis by blue light
    Eirini Kaiserli
    Plant Science Group, Division of Molecular and Cellular Biology, Faculty of Biomedical and Life Sciences, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
    Plant Cell 21:3226-44. 2009
    Phototropins (phot1 and phot2) are plasma membrane-associated receptor kinases that respond specifically to blue and UV wavelengths...
  3. doi In vivo phosphorylation site mapping and functional characterization of Arabidopsis phototropin 1
    Stuart Sullivan
    Plant Science Group, Division of Biochemistry and Molecular Biology, Institute of Biomedical and Life Sciences, University of Glasgow, University Avenue, Glasgow, Scotland, UK
    Mol Plant 1:178-94. 2008
    Phototropins (phot1 and phot2) are blue-light receptor kinases controlling a range of responses that optimize the photosynthetic efficiency of plants...
  4. doi Interaction specificity of Arabidopsis 14-3-3 proteins with phototropin receptor kinases
    Stuart Sullivan
    Division of Molecular and Cellular Biology, Faculty of Biomedical and Life Sciences, University of Glasgow, Glasgow, UK
    FEBS Lett 583:2187-93. 2009
    ..Here, we isolated several interacting proteins for Arabidopsis phototropin 1 (phot1) by yeast two-hybrid screening...
  5. pmc The Arabidopsis PHYTOCHROME KINASE SUBSTRATE2 protein is a phototropin signaling element that regulates leaf flattening and leaf positioning
    Matthieu de Carbonnel
    Center for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland
    Plant Physiol 152:1391-405. 2010
    ..Systematic analysis of mutants reveals that PKS2 (and to a lesser extent PKS1) act in the same subset of phototropin-controlled responses as NPH3, namely leaf flattening and positioning...
  6. pmc Integration of Phot1, Phot2, and PhyB signalling in light-induced chloroplast movements
    Darron R Luesse
    Department of Biological Sciences, Science Laboratory Building 3326, Southern Illinois University, Edwardsville, IL 62026, USA
    J Exp Bot 61:4387-97. 2010
    ..The regulation of these chloroplast movements involves members of both the phototropin and phytochrome families of photoreceptors...
  7. pmc Phytochrome A regulates the intracellular distribution of phototropin 1-green fluorescent protein in Arabidopsis thaliana
    In Seob Han
    Department of Biological Sciences, University of Ulsan, Ulsan 680 749, Korea
    Plant Cell 20:2835-47. 2008
    ..by low fluence rates of blue light prevent the blue light-induced loss of green fluorescent protein-tagged phototropin 1 (PHOT1-GFP) from the plasma membrane of cortical cells of transgenic seedlings of Arabidopsis thaliana ..
  8. doi Molecular basis of the functional specificities of phototropin 1 and 2
    Yusuke Aihara
    Department of Botany, Graduate School of Science, Kyoto University, Kyoto 606 8502, Japan
    Plant J 56:364-75. 2008
    A blue-light photoreceptor in plants, phototropin, mediates phototropism, chloroplast relocation, stomatal opening, and leaf-flattening responses...
  9. pmc Blue light-induced autophosphorylation of phototropin is a primary step for signaling
    Shin Ichiro Inoue
    Department of Biology, Faculty of Science, Kyushu University, Ropponmatsu, Fukuoka 810 8560, Japan
    Proc Natl Acad Sci U S A 105:5626-31. 2008
    ..sites of Ser or Thr in the N terminus, Hinge1 region, kinase domain, and C terminus in Arabidopsis phototropin1 (phot1) by liquid chromatography-tandem mass spectrometry in vivo...
  10. ncbi Functional ecology of a blue light photoreceptor: effects of phototropin-1 on root growth enhance drought tolerance in Arabidopsis thaliana
    Candace Galen
    Division of Biological Sciences, University of Missouri Columbia, Columbia, MO 65211 7400, USA
    New Phytol 173:91-9. 2007
    The blue light photoreceptor phototropin-1 has been shown to enhance fitness in Arabidosis thaliana under field conditions...
  11. pmc PHYTOCHROME KINASE SUBSTRATE 1 is a phototropin 1 binding protein required for phototropism
    Patricia Lariguet
    Department of Molecular Biology, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva 4, Switzerland
    Proc Natl Acad Sci U S A 103:10134-9. 2006
    ..Lateral differences in low fluence rates of blue light are detected by phototropin 1 (phot1) in Arabidopsis...
  12. pmc Blue light-regulated molecular switch of Ser/Thr kinase in phototropin
    Daisuke Matsuoka
    Research Institute for Advanced Science and Technology, Osaka Prefecture University, 1 2 Gakuen cho, Sakai, Osaka 599 8570, Japan
    Proc Natl Acad Sci U S A 102:13337-42. 2005
    b>Phototropin is a blue light photoreceptor for tropic responses, relocation of chloroplasts, and stomata opening in plants...
  13. ncbi Arabidopsis NPH3: A NPH1 photoreceptor-interacting protein essential for phototropism
    A Motchoulski
    Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA
    Science 286:961-4. 1999
    Phototropism of Arabidopsis thaliana seedlings in response to a blue light source is initiated by nonphototropic hypocotyl 1 (NPH1), a light-activated serine-threonine protein kinase...
  14. pmc Arabidopsis nph1 and npl1: blue light receptors that mediate both phototropism and chloroplast relocation
    T Sakai
    RIKEN The Institute of Physical and Chemical Research Plant Science Center, Sakyo ku, Kyoto 606 8502, Japan
    Proc Natl Acad Sci U S A 98:6969-74. 2001
    ..These include light-driven chloroplast movement and phototropism. The NPH1 gene of Arabidopsis encodes an autophosphorylating protein kinase that functions as a photoreceptor for ..
  15. ncbi Phot1 and phot2 mediate blue light regulation of stomatal opening
    T Kinoshita
    Department of Biology, Faculty of Science, Kyushu University, Ropponmatsu, Fukuoka 810 8560, Japan
    Nature 414:656-60. 2001
    ..responses have identified four blue light receptors, cryptochrome 1 (cry1), cryptochrome 2 (cry2), phot1 and phot2...
  16. pmc Cellular and subcellular localization of phototropin 1
    Koji Sakamoto
    Department of Plant Biology, Carnegie Institution of Washington, 260 Panama Street, Stanford, CA 94305, USA
    Plant Cell 14:1723-35. 2002
    b>Phototropin 1 (phot1) is a Ser/Thr photoreceptor kinase that binds two molecules of flavin mononucleotide as its chromophores and undergoes autophosphorylation in response to blue light...
  17. ncbi Arabidopsis NPH1: a protein kinase with a putative redox-sensing domain
    E Huala
    Department of Plant Biology, Carnegie Institution of Washington, 260 Panama Street, Stanford, CA 94305, USA
    Science 278:2120-3. 1997
    The NPH1 (nonphototropic hypocotyl 1) gene encodes an essential component acting very early in the signal-transduction chain for phototropism...
  18. ncbi Phototropin LOV domains exhibit distinct roles in regulating photoreceptor function
    John M Christie
    Department of Plant Biology, Carnegie Institution of Washington, Stanford, California 94305, USA
    Plant J 32:205-19. 2002
    ..Here we have used the Cys39Ala mutation to investigate the role of LOV1 and LOV2 in regulating phototropin function...
  19. pmc Phototropins promote plant growth in response to blue light in low light environments
    Atsushi Takemiya
    Department of Biology, Faculty of Science, Kyushu University, Ropponmatsu, Fukuoka, 810 8560, Japan
    Plant Cell 17:1120-7. 2005
    ..Here, we report dramatic phototropin-dependent effects on plant growth...
  20. pmc Physiological roles of the light, oxygen, or voltage domains of phototropin 1 and phototropin 2 in Arabidopsis
    Hae Young Cho
    Department of Plant Biology, Carnegie Institution of Washington, Stanford, California 94301, USA
    Plant Physiol 143:517-29. 2007
    ..These constructs encode either wild-type phototropin or phototropin with one or both LOV-domain cysteines mutated to block their photochemistry...
  21. doi Arabidopsis phot1 and phot2 phosphorylate BLUS1 kinase with different efficiencies in stomatal opening
    Atsushi Takemiya
    Department of Biology, Faculty of Science, Kyushu University, 744 Motooka, Nishi ku, Fukuoka, 819 0395, Japan
    J Plant Res 129:167-74. 2016
    In Arabidopsis thaliana, phototropins (phot1 and phot2), light-activated receptor kinases, redundantly regulate various photoresponses such as phototropism, chloroplast photorelocation movement, stomatal opening, and leaf flattening...
  22. pmc Phototropins function in high-intensity blue light-induced hypocotyl phototropism in Arabidopsis by altering cytosolic calcium
    Xiang Zhao
    Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, People s Republic of China
    Plant Physiol 162:1539-51. 2013
    ..Here, systematic analysis of phototropin-related mutants and overexpression transgenic lines revealed that HBL specifically induced a transient increase ..
  23. doi Defining the site of light perception and initiation of phototropism in Arabidopsis
    Tobias Preuten
    Centre for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
    Curr Biol 23:1934-8. 2013
    ..In grass seedlings, the site of phototropin-mediated light perception is distinct from the site of bending; however, in dicotyledonous plants (e.g...
  24. pmc Coiled-coil dimerization of the LOV2 domain of the blue-light photoreceptor phototropin 1 from Arabidopsis thaliana
    Andrei S Halavaty
    Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, IL 60637, USA
    Acta Crystallogr Sect F Struct Biol Cryst Commun 69:1316-21. 2013
    ..The dark-adapted state crystal structures of the Arabidopsis thaliana phototropin 1 and phototropin 2 LOV1-domain constructs flanked by an N-terminal A'α helix and the structure of the ..
  25. doi The blue light receptor Phototropin 1 suppresses lateral root growth by controlling cell elongation
    A Moni
    School of Biological Sciences, University of Ulsan, Ulsan, Korea
    Plant Biol (Stuttg) 17:34-40. 2015
    We investigated the relationship between the blue light receptor phototropin 1 (phot1) and lateral root growth in Arabidopsis thaliana seedlings...
  26. pmc Phototropin 1 and dim-blue light modulate the red light de-etiolation response
    Yihai Wang
    a Horticultural Sciences Department University of Florida, Gainesville, FL USA
    Plant Signal Behav 9:e976158. 2014
    ..hypocotyl growth inhibition can be reversed by addition of dim blue light through the action of phototropin 1 (phot1)...
  27. pmc Essential role of the A'α/Aβ gap in the N-terminal upstream of LOV2 for the blue light signaling from LOV2 to kinase in Arabidopsis photototropin1, a plant blue light receptor
    Sachiko Kashojiya
    Department of Biological Science, Osaka Prefecture University, Sakai, Osaka, Japan
    PLoS ONE 10:e0124284. 2015
    b>Phototropin (phot) is a blue light (BL) receptor in plants and is involved in phototropism, chloroplast movement, stomata opening, etc...
  28. doi Phototropins maintain robust circadian oscillation of PSII operating efficiency under blue light
    Suzanne Litthauer
    School of Biological Sciences, University of Essex, Wivenhoe Park, Colchester, CO4 3SQ, UK
    Plant J 83:1034-45. 2015
    ..As phototropins do not influence circadian gene expression in the nucleus our imaging methodology highlights differences between the modulation of circadian outputs in distinct subcellular compartments. ..
  29. doi The impact of temperature on blue light induced chloroplast movements in Arabidopsis thaliana
    Justyna Łabuz
    Department of Plant Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30 387 Krakow, Poland Electronic address
    Plant Sci 239:238-49. 2015
    ..The physiological role of the cold-enhancement of the avoidance response is explained in the context of phototropin levels, photochemical activities and signaling in the cell.
  30. doi The subcellular localization and blue-light-induced movement of phototropin 1-GFP in etiolated seedlings of Arabidopsis thaliana
    Ying Lang Wan
    Dept Plant Cell Biology, Institute of Cellular and Molecular Botany, University of Bonn, Kirschallee 1, D 53115 Bonn, Germany
    Mol Plant 1:103-17. 2008
    b>Phototropin 1 (phot1) is a photoreceptor for phototropism, chloroplast movement, stomatal opening, leaf expansion, and solar tracking in response to blue light...
  31. pmc PHYTOCHROME-DEPENDENT LATE-FLOWERING accelerates flowering through physical interactions with phytochrome B and CONSTANS
    Motomu Endo
    Graduate School of Biostudies, Kyoto University, Kyoto 606 8501, Japan
    Proc Natl Acad Sci U S A 110:18017-22. 2013
    ..Furthermore, in the presence of phyB under red light, PHL interacted with CO as well. Taken together, we propose that PHL regulates photoperiodic flowering by forming a phyB-PHL-CO tripartite complex...
  32. doi Both phototropin 1 and 2 localize on the chloroplast outer membrane with distinct localization activity
    Sam Geun Kong
    Department of Biology, Graduate School of Science, Kyushu University, Fukuoka, 812 8581 Japan
    Plant Cell Physiol 54:80-92. 2013
    ..Phototropins (phot1 and phot2 in Arabidopsis) are plant-specific blue light photoreceptors that perceive changes in light intensity ..
  33. pmc Photosensitivity of kinase activation by blue light involves the lifetime of a cysteinyl-flavin adduct intermediate, S390, in the photoreaction cycle of the LOV2 domain in phototropin, a plant blue light receptor
    Koji Okajima
    Department of Biological Sciences, Graduate School of Science, Osaka Prefecture University, Gakuen cho 1 1, Nakaku, Sakai, Osaka 599 8531, Japan
    J Biol Chem 287:40972-81. 2012
    b>Phototropin (phot) is a light-regulated protein kinase that mediates a variety of photoresponses in plants, such as phototropism, chloroplast positioning, and stomata opening...
  34. doi Antagonistic regulation of leaf flattening by phytochrome B and phototropin in Arabidopsis thaliana
    Toshiaki Kozuka
    Department of Botany, Graduate School of Science, Kyoto University, Kyoto, 606 8502 Japan
    Plant Cell Physiol 54:69-79. 2013
    ..Interestingly, the curled-leaf phenotype in a phototropin-deficient mutant was almost completely suppressed by the phyB mutation as well as by EODFR...
  35. doi Phototropin 1 and cryptochrome action in response to green light in combination with other wavelengths
    Yihai Wang
    Horticultural Sciences Department, University of Florida, 1301 Fifield Hall, PO Box 110690, Gainesville, FL 32611, USA
    Planta 237:225-37. 2013
    ..The GL opposition of RL responses persists in phyA, phyB, cry1cry2 and phot2 mutants. The response requires phot1 and NPH3, suggesting that this is not a GL response, but instead a response to extremely low-fluence rate BL...
  36. pmc Investigations on the photoregulation of chloroplast movement and leaf positioning in Arabidopsis
    In Seob Han
    School of Biological Sciences, University of Ulsan, Ulsan 680 749, Korea
    Plant Cell Physiol 54:48-56. 2013
    We recently investigated the roles of the phototropin 1 (PHOT1) LOV (light, oxygen or voltage) domains in mediating phototropic curvature in transgenic Arabidopsis seedlings expressing either wild-type PHOT1 or PHOT1 with one or both LOV ..
  37. pmc Phytochrome Kinase Substrate 4 is phosphorylated by the phototropin 1 photoreceptor
    Emilie Demarsy
    Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
    EMBO J 31:3457-67. 2012
    ..b>Phototropin 1 (phot1) is the primary low blue light-sensing receptor triggering phototropism in Arabidopsis...
  38. doi Role of RPT2 in leaf positioning and flattening and a possible inhibition of phot2 signaling by phot1
    Akiko Harada
    Department of Biology, Faculty of Liberal Arts, Osaka Medical College, 2 7, Daigaku machi, Takatsuki 569 8686, Osaka, Japan
    Plant Cell Physiol 54:36-47. 2013
    ..We conclude that RPT2 mediates leaf flattening and positioning in a phot1-dependent manner, and that phot1 may inhibit the phot2 signaling pathways. We discuss the functional role of RPT2 in phototropin signaling.
  39. pmc Phototropins but not cryptochromes mediate the blue light-specific promotion of stomatal conductance, while both enhance photosynthesis and transpiration under full sunlight
    Hernan E Boccalandro
    Instituto de Biología Agrícola de Mendoza, Universidad Nacional de Cuyo and Consejo Nacional de Investigaciones Científicas y Técnicas, 5507 Chacras de Coria, Argentina
    Plant Physiol 158:1475-84. 2012
    Leaf epidermal peels of Arabidopsis (Arabidopsis thaliana) mutants lacking either phototropins 1 and 2 (phot1 and phot2) or cryptochromes 1 and 2 (cry1 and cry2) exposed to a background of red light show severely impaired stomatal ..
  40. doi Stability of dimer and domain-domain interaction of Arabidopsis phototropin 1 LOV2
    Yusuke Nakasone
    Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606 8502, Japan
    J Mol Biol 383:904-13. 2008
    Transient grating signals after photoexcitation of Arabidopsis phototropin 1 light-oxygen-voltage 2 (phot1LOV2) domain without the linker were found to be very sensitive to temperature...
  41. pmc Crystallization and preliminary X-ray diffraction analysis [correction of anaylsis] of the LOV1 domains of phototropin 1 and 2 from Arabidopsis thaliana
    Masayoshi Nakasako
    Department of Physics, Faculty of Science and Technology, Keio University, 3 14 1 Hiyoshi, Kohoku Ku, Kanagawa 223 8522, Japan
    Acta Crystallogr Sect F Struct Biol Cryst Commun 64:617-21. 2008
    ..Higher plants such as Arabidopsis thaliana have two isoforms of phototropin: phototropin 1 and phototropin 2...
  42. doi Structural basis of the LOV1 dimerization of Arabidopsis phototropins 1 and 2
    Masayoshi Nakasako
    Department of Physics, Faculty of Science and Technology, Keio University, 3 14 1 Hiyoshi, Kohoku Ku, Kanagawa 223 8522, Japan
    J Mol Biol 381:718-33. 2008
    b>Phototropin (phot) is a blue-light receptor protein that triggers phototropic responses, chloroplast relocation, and stomata opening to maximize the efficiency of photosynthesis in higher plants...
  43. pmc An inositol polyphosphate 5-phosphatase functions in PHOTOTROPIN1 signaling in Arabidopis by altering cytosolic Ca2+
    Xu Chen
    Shanghai Institutes for Biological Science University of California Berkeley Center of Molecular Life Sciences, Chinese Academy of Sciences, 20032 Shanghai, China
    Plant Cell 20:353-66. 2008
    ..independently from CRYPTOCHROME1 and CONSTITUTIVE PHOTOMORPHOGENIC1 but interacted functionally with PHOTOTROPIN1 (PHOT1)...
  44. doi Multiple interactions between cryptochrome and phototropin blue-light signalling pathways in Arabidopsis thaliana
    Bin Kang
    Penn State University, Media, PA 19104, USA
    Planta 227:1091-9. 2008
    ..Specifically, in a phot1-deficient genetic background (phot1 mutant), curvature is reduced in the absence of cryptochromes, particularly at ..
  45. ncbi Blue light inhibits guard cell plasma membrane anion channels in a phototropin-dependent manner
    Holger Marten
    Molecular Plant Physiology and Biophysics, Julius von Sachs Institute for Biosciences, Biocenter, Wurzburg University, Julius von Sachs Platz 2, D 97082 Wurzburg, Germany
    Plant J 50:29-39. 2007
    ..Blue light also inhibited plasma membrane anion channels in A. thaliana guard cells, but not in the phot1 phot2 double mutant...
  46. ncbi Dynamics of conformational changes of Arabidopsis phototropin 1 LOV2 with the linker domain
    Yusuke Nakasone
    Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606 8502, Japan
    J Mol Biol 367:432-42. 2007
    Conformational changes of Arabidopsis phot1-LOV2 with the linker (phot1-LOV2-linker) were investigated from the viewpoint of the changes in molecular volume and molecular diffusion coefficient (D) by time-resolved transient grating (TG) ..
  47. pmc An auxilin-like J-domain protein, JAC1, regulates phototropin-mediated chloroplast movement in Arabidopsis
    Noriyuki Suetsugu
    Division of Photobiology, National Institute for Basic Biology, Okazaki, Japan
    Plant Physiol 139:151-62. 2005
    ..Together, these results suggest that JAC1 is an essential component of phototropin-mediated chloroplast movement.
  48. ncbi Biochemical characterization of plasma membrane H+-ATPase activation in guard cell protoplasts of Arabidopsis thaliana in response to blue light
    Kumi Ueno
    Department of Biology, Faculty of Science, Kyushu University, Ropponmatsu 4 2 1 Fukuoka, 810 8560 Japan
    Plant Cell Physiol 46:955-63. 2005
    Recent genetic analysis showed that phototropins (phot1 and phot2) function as blue light receptors in stomatal opening of Arabidopsis thaliana, but no biochemical evidence was provided for this...
  49. doi LOV2-linker-kinase phosphorylates LOV1-containing N-terminal polypeptide substrate via photoreaction of LOV2 in Arabidopsis phototropin1
    Koji Okajima
    Department of Biological Sciences, Graduate School of Science, Osaka Prefecture University, Gakuen cho 1 1, Nakaku, Sakai, Osaka 599 8531, Japan
    FEBS Lett 585:3391-5. 2011
    b>Phototropin is a blue light receptor in plants and is thought to be a light-regulated protein kinase...
  50. pmc Modulation of phototropic responsiveness in Arabidopsis through ubiquitination of phototropin 1 by the CUL3-Ring E3 ubiquitin ligase CRL3(NPH3)
    Diana Roberts
    Division of Biological Sciences, University of Missouri, Columbia, Missouri 65211, USA
    Plant Cell 23:3627-40. 2011
    ..response pathway have been identified in recent years, including the blue light (BL) receptors phototropin1 (phot1) and phot2, much remains unknown...
  51. doi Red light, Phot1 and JAC1 modulate Phot2-dependent reorganization of chloroplast actin filaments and chloroplast avoidance movement
    Satoshi Ichikawa
    Department of Biological Sciences, Graduate School of Science and Engineering, Tokyo Metropolitan University, Tokyo, 192 0397 Japan
    Plant Cell Physiol 52:1422-32. 2011
    The phototropin (phot)-dependent intracellular relocation of chloroplasts is a ubiquitous phenomenon in plants. We have previously revealed the involvement of a short cp-actin (chloroplast actin) filament-based mechanism in this movement...
  52. pmc phot1 inhibition of ABCB19 primes lateral auxin fluxes in the shoot apex required for phototropism
    John M Christie
    Institute of Molecular Cell and Systems Biology, University of Glasgow, Glasgow, United Kingdom
    PLoS Biol 9:e1001076. 2011
    ..auxin efflux transporter ATP-BINDING CASSETTE B19 (ABCB19) as a substrate target for the photoreceptor kinase PHOTOTROPIN 1 (phot1)...
  53. doi Transitions of gene expression induced by short-term blue light
    P Lehmann
    JWGU Frankfurt am Main, CEF Macromolecular Complexes, Centre of Membrane Proteomics, Department of Biosciences, Frankfurt, Germany
    Plant Biol (Stuttg) 13:349-61. 2011
    ..Three genes were identified as important for the latter process, namely PHOT1, PHOT2 and CHUP1. The former two phototropin blue light receptors act in perception of the blue light signal...
  54. pmc Evidence of physiological phototropin1 (phot1) action in response to UV-C illumination
    Melissa Hamner Magerøy
    Horticultural Sciences Department and the Graduate Program in Plant Molecular and Cellular Biology, University of Florida, Gainesville, FL, USA
    Plant Signal Behav 5:1204-10. 2010
    ..Arabidopsis seedlings were used to assess the genetic mechanism of this response. The phot1 mutant exhibited defects in stem growth rate inhibition, with sustained growth inhibition completely absent ..
  55. doi Purification of low-abundance Arabidopsis plasma-membrane protein complexes and identification of candidate components
    Yiping Qi
    Department of Plant Biology, Microbial and Plant Genomics Institute, University of Minnesota, St Paul, MN 55108, USA
    Plant J 57:932-44. 2009
    ..We identified RIN4, a known RPS2 interactor, as well as other potential components of the RPS2 complex(es). Thus, the HPB tag method is suitable for the purification of low-abundance PM protein complexes...
  56. doi Light, genotype, and abscisic acid affect chloroplast positioning in guard cells of Arabidopsis thaliana leaves in distinct ways
    Martina Königer
    Department of Biological Sciences, Wellesley College, Wellesley, MA 02481, USA
    Photosynth Res 105:213-27. 2010
    ..This was not the case for phot1-5/phot2-1 or phot2-1 plants, thus phototropins are essential for chloroplast positioning in guard cells...
  57. doi Oligomeric structure of LOV domains in Arabidopsis phototropin
    Hitomi Katsura
    Department of Biological Science, Graduate School of Science, Osaka Prefecture University, Naka ku, Sakai, Osaka, Japan
    FEBS Lett 583:526-30. 2009
    Oligomeric structures of the four LOV domains in Arabidopsis phototropin1 (phot1) and 2 (phot2) were studied using crosslinking...
  58. doi Blue light-induced phototropism of inflorescence stems and petioles is mediated by phototropin family members phot1 and phot2
    Takatoshi Kagawa
    Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305 8577 Japan
    Plant Cell Physiol 50:1774-85. 2009
    b>Phototropin family photoreceptors, phot1 and phot2, in Arabidopsis thaliana control the blue light (BL)-mediated phototropic responses of the hypocotyl, chloroplast relocation movement and stomatal opening...