Research Topics
| TERRY KRULWICHSummaryAffiliation: Mount Sinai School of Medicine Country: USA Publications
Research Grants
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Publications
The Na(+)-dependence of alkaliphily in BacillusT A Krulwich
Department of Biochemistry and Molecular Biology, Mount Sinai School of Medicine, New York, NY 10029, USA
Biochim Biophys Acta 1505:158-68. 2001..pseudofirmus OF4 requires a higher [Na(+)] for growth at near-neutral pH than at very alkaline pH values...
A major role for social work input during development of an innovative Post-Baccalaureate Research Education Program in a medical center environmentTerry Ann Krulwich
Department of Pharmacology and Therapeutics, Mount Sinai School of Medicine, New York, New York 10029, USA
Soc Work Health Care 48:653-64. 2009..Social work and educational psychology principles inform strategies used to identify and address gaps or impediments that would otherwise diminish the potential of Mount Sinai PREP scholars to succeed in cutting-edge research careers...
Cation/proton antiporter complements of bacteria: why so large and diverse?Terry A Krulwich
Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA
Mol Microbiol 74:257-60. 2009..They also provide new perspectives on two large monovalent cation/proton antiporter families, the NhaC and the cation/proton antiporter-3 antiporter families...
Molecular aspects of bacterial pH sensing and homeostasisTerry A Krulwich
Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, New York 10029, USA
Nat Rev Microbiol 9:330-43. 2011..These insights may help us to target certain pathogens more accurately and to harness the capacities of environmental bacteria more efficiently...
Functions of tetracycline efflux proteins that do not involve tetracyclineT A Krulwich
Department of Biochemistry and Molecular Biology, Mount Sinai School of Medicine, New York 10029, USA
J Mol Microbiol Biotechnol 3:237-46. 2001..It will also be of interest to investigate the implications of Tet(L) and Tet(K) multifunctionality on the emergence and persistence of these antibiotic-resistance genes...
F1F0-ATP synthases of alkaliphilic bacteria: lessons from their adaptationsDavid B Hicks
Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA
Biochim Biophys Acta 1797:1362-77. 2010..ATP synthesis in alkaliphiles depends upon alkaliphile-specific adaptations of the ATP synthase and there is also evidence for alkaliphile-specific adaptations of respiratory chain components...
Catalytic properties of Staphylococcus aureus and Bacillus members of the secondary cation/proton antiporter-3 (Mrp) family are revealed by an optimized assay in an Escherichia coli hostTalia H Swartz
Department of Pharmacology and Biological Chemistry, Box 1603, Mount Sinai School of Medicine, 1 Gustave L Levy Place, New York, NY 10029, USA
J Bacteriol 189:3081-90. 2007..coli transformants led to a hypothesis explaining how activity of secondary, DeltaPsi-consuming antiporters can elicit increased capacity for DeltaPsi generation in a bacterial host...
A tenth atp gene and the conserved atpI gene of a Bacillus atp operon have a role in Mg2+ uptakeDavid B Hicks
Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, New York, NY 10029, USA
Proc Natl Acad Sci U S A 100:10213-8. 2003..Such proteins could provide Mg2+, which is required by ATP synthase, and also support charge compensation, when the enzyme is functioning in the hydrolytic direction; e.g., during cytoplasmic pH regulation...
The ATP synthase a-subunit of extreme alkaliphiles is a distinct variant: mutations in the critical alkaliphile-specific residue Lys-180 and other residues that support alkaliphile oxidative phosphorylationMakoto Fujisawa
Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, New York 10029, USA
J Biol Chem 285:32105-15. 2010..pseudofirmus OF4. Finally, a mutant B. pseudofirmus OF4 synthase with switched positions of Lys-180 (helix 4) and Gly-212 (helix 5) retained significant coupled synthase activity accompanied by proton leakiness...
Characterization of the Functionally Critical AXAXAXA and PXXEXXP Motifs of the ATP Synthase c-Subunit from an Alkaliphilic BacillusJun Liu
Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, New York 10029, USA
J Biol Chem 284:8714-25. 2009..The results highlight the requirement for c-subunit adaptations to achieve alkaliphile ATP synthesis with minimal cytoplasmic proton loss and suggest partial suppression of some mutations by changes outside the atp operon...
Purification of two putative type II NADH dehydrogenases with different substrate specificities from alkaliphilic Bacillus pseudofirmus OF4Jun Liu
Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, One Gustave L Levy Place, New York, NY 10029, USA
Biochim Biophys Acta 1777:453-61. 2008..They were predominantly cytoplasmic in E. coli, consonant with the absence of antiport activity. The catalytic properties of NDH-2A were more consistent with a major respiratory role than those of NDH-2B...
Tet(L) and tet(K) tetracycline-divalent metal/H+ antiporters: characterization of multiple catalytic modes and a mutagenesis approach to differences in their efflux substrate and coupling ion preferencesJie Jin
Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, 1 Gustave L. Levy Place, New York, NY 10029, USA
J Bacteriol 184:4722-32. 2002....
Adaptive gene expression in Bacillus subtilis strains deleted for tetLYi Wei
Department of Pharmacology and Biological Chemistry, Box 1603, Mount Sinai School of Medicine of New York University, New York, NY 10029, USA
J Bacteriol 188:7090-100. 2006....
Mutational loss of a K+ and NH4+ transporter affects the growth and endospore formation of alkaliphilic Bacillus pseudofirmus OF4Yi Wei
Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, 1 Gustave L. Levy Place, New York, NY 10029, USA
J Bacteriol 185:5133-47. 2003..Endospore formation in amino-acid-rich medium was significantly defective and germination was modestly defective in the orf9 and orf7-orf10 deletion mutants...
Three putative cation/proton antiporters from the soda lake alkaliphile Alkalimonas amylolytica N10 complement an alkali-sensitive Escherichia coli mutantYi Wei
Department of Pharmacology and Systems Therapeutics, Mount Sinai School of Medicine, New York, NY 10029, USA
Microbiology 153:2168-79. 2007....
TetL tetracycline efflux protein from Bacillus subtilis is a dimer in the membrane and in detergent solutionMarkus Safferling
Skirball Institute of Biomolecular Medicine and Department of Cell Biology, New York University School of Medicine, 540 First Avenue, New York, New York 10016, USA
Biochemistry 42:13969-76. 2003..In addition, TetL dimers were found in a number of other detergents and over a wide pH range. It is therefore likely that the oligomeric form of the protein in the membrane is also a dimer...
Do physiological roles foster persistence of drug/multidrug-efflux transporters? A case studyTerry A Krulwich
Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, New York, New York 10029, USA
Nat Rev Microbiol 3:566-72. 2005..The recent observations that Tet(L), a tetracycline-efflux transporter, and MdfA, a multidrug-efflux transporter, both confer alkali tolerance offer a striking case study in support of this hypothesis...
The Mrp Na+/H+ antiporter increases the activity of the malate:quinone oxidoreductase of an Escherichia coli respiratory mutantTalia H Swartz
Box 1603, Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, 1 Gustave L Levy Place, New York, NY 10029, USA
J Bacteriol 187:388-91. 2005....
Site-directed mutagenesis studies of selected motif and charged residues and of cysteines of the multifunctional tetracycline efflux protein Tet(L)Jie Jin
Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, New York, New York 10029, USA
J Bacteriol 184:1796-800. 2002..e., TET-Me(2+) and Na(+) efflux and K(+) uptake. Loop residues D74 and G70 are essential for TET flux but not for Na(+) or K(+) flux. A cysteineless Tet(L) protein exhibits all activities...
Importance of the GP dipeptide of the antiporter motif and other membrane-embedded proline and glycine residues in tetracycline efflux protein Tet(L)Magdia De Jesus
Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, New York, New York 10029, USA
Biochemistry 44:12896-904. 2005..Patterns of Tc resistance conferred by additional Tet(L) mutants indicate important roles for another GP dipeptide in transmembrane segment (TMS) X as well as for membrane-embedded glycine residues in TMS XIII...
An antiport mechanism for a member of the cation diffusion facilitator family: divalent cations efflux in exchange for K+ and H+Arthur A Guffanti
Department of Pharmacology and Biological Chemistry, Mount Sinai School of Medicine, New York, NY 10029, USA
Mol Microbiol 45:145-53. 2002..CzcO modestly enhances the activity of CzcD but is not predicted to be an integral membrane protein and has no antiport activity of its own...
Interaction between cytochrome caa3 and F1F0-ATP synthase of alkaliphilic Bacillus pseudofirmus OF4 is demonstrated by saturation transfer electron paramagnetic resonance and differential scanning calorimetry assaysXiaoying Liu
Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, Oklahoma 74078, USA
Biochemistry 46:306-13. 2007..pseudofirmus OF4 in a reconstituted system. They support the suggestion that such an interaction between these complexes may contribute to sequestered proton transfers during alkaliphile oxidative phosphorylation at high pH...
Research Grants
- Integrated Training in Pharmacological SciencesTERRY KRULWICH; Fiscal Year: 2007....
- Post-Baccalaureate Research Education Program (PREP)TERRY KRULWICH; Fiscal Year: 2007....
- Enhancing Successful Post-Baccalaureate Intervention to Promote Research CareersTERRY KRULWICH; Fiscal Year: 2007..The studies test hypothesized factors as predictors/builders of successful PhD work and test the adaptability of successful PREP interventions to a doctoral program setting. ..
- Enhancing Successful Post-Baccalaureate Intervention to Promote Research CareersTERRY KRULWICH; Fiscal Year: 2009..The studies test hypothesized factors as predictors/builders of successful PhD work and test the adaptability of successful PREP interventions to a doctoral program setting. ..
- Proton-Coupling Strategies in Alkaliphilic BacillusTerry Ann Krulwich; Fiscal Year: 2010....
- Enhancing Successful Post-Baccalaureate Intervention to Promote Research CareersTerry Ann Krulwich; Fiscal Year: 2010..The studies test hypothesized factors as predictors/builders of successful PhD work and test the adaptability of successful PREP interventions to a doctoral program setting. ..
- Tet Efflux Proteins: Implications of Multiple FunctionsTERRY KRULWICH; Fiscal Year: 2004..Specific Aim 3 will: clarify the basis for different phenotypes of tet(L) mutants; will further test the novel translational reinitiation model for tet(L) regulation; and will probe additional, Na- and pH related regulation. ..
- BACILLUS SUBTILIS TET(L)--REGULATION AND TRANSPORTTERRY KRULWICH; Fiscal Year: 1999....
- PROTON COUPLING STRATEGIES IN ALKALIPHILIC BACILLUSTERRY KRULWICH; Fiscal Year: 2002..MrpA may represent another trend that could emerge in energy-constrained contexts, i.e. the capacity for a secondary antiporter to adopt a primary type of energization in the proper protein complex or vice versa. ..
- Bacillus anthracis Spores: Initiation of GerminationTERRY KRULWICH; Fiscal Year: 2003..Such transporters may be new virulence factors, i.e. additional potential therapeutic targets. ..
- Proton-Coupling Strategies in Alkaliphilic BacillusTERRY KRULWICH; Fiscal Year: 2009..The studies of the Mrp system characterize a novel protein carrier found in many bacterial pathogens. Mrp is a potential target for development of new antibiotics. ..
