Gene Symbol: folP
Description: 7,8-dihydropteroate synthase
Alias: ECK3166, JW3144, dhpS
Species: Escherichia coli str. K-12 substr. MG1655

Top Publications

  1. Dallas W, Dev I, Ray P. The dihydropteroate synthase gene, folP, is near the leucine tRNA gene, leuU, on the Escherichia coli chromosome. J Bacteriol. 1993;175:7743-4 pubmed
  2. Swedberg G, Fermer C, Skold O. Point mutations in the dihydropteroate synthase gene causing sulfonamide resistance. Adv Exp Med Biol. 1993;338:555-8 pubmed
  3. Achari A, Somers D, Champness J, Bryant P, Rosemond J, Stammers D. Crystal structure of the anti-bacterial sulfonamide drug target dihydropteroate synthase. Nat Struct Biol. 1997;4:490-7 pubmed
    ..The site of action is the de novo folate biosynthesis enzyme dihydropteroate synthase (DHPS) where sulfonamides act as analogues of one of the substrates, para-aminobenzoic acid (pABA)...
  4. Swedberg G, Castensson S, Skold O. Characterization of mutationally altered dihydropteroate synthase and its ability to form a sulfonamide-containing dihydrofolate analog. J Bacteriol. 1979;137:129-36 pubmed
  5. Dallas W, Gowen J, Ray P, Cox M, Dev I. Cloning, sequencing, and enhanced expression of the dihydropteroate synthase gene of Escherichia coli MC4100. J Bacteriol. 1992;174:5961-70 pubmed
    The Escherichia coli gene coding for dihydropteroate synthase (DHPS) has been cloned and sequenced. The protein has 282 amino acids and a compositional molecular mass of 30,314 daltons...
  6. Talarico T, Dev I, Dallas W, Ferone R, Ray P. Purification and partial characterization of 7,8-dihydro-6-hydroxymethylpterin-pyrophosphokinase and 7,8-dihydropteroate synthase from Escherichia coli MC4100. J Bacteriol. 1991;173:7029-32 pubmed
    The enzymes 7,8-dihydroxymethylpterin-pyrophosphokinase (HPPK) and 7,8-dihydropteroate synthase (DHPS), which act sequentially in the folate pathway, were purified to homogeneity from crude extracts of Escherichia coli MC4100...
  7. Fermer C, Swedberg G. Adaptation to sulfonamide resistance in Neisseria meningitidis may have required compensatory changes to retain enzyme function: kinetic analysis of dihydropteroate synthases from N. meningitidis expressed in a knockout mutant of Escherichia coli. J Bacteriol. 1997;179:831-7 pubmed
    ..effects on enzyme kinetics by expressing the cloned meningococcal genes in an Escherichia coli strain that had its dhps gene partially deleted and replaced by a resistance determinant...
  8. Vedantam G, Guay G, Austria N, Doktor S, Nichols B. Characterization of mutations contributing to sulfathiazole resistance in Escherichia coli. Antimicrob Agents Chemother. 1998;42:88-93 pubmed
    ..two different laboratory strains of Escherichia coli repeatedly selected for sulfathiazole resistance was mapped to folP by P1 transduction...
  9. Bermingham A, Derrick J. The folic acid biosynthesis pathway in bacteria: evaluation of potential for antibacterial drug discovery. Bioessays. 2002;24:637-48 pubmed

More Information


  1. Gerdes S, Scholle M, Campbell J, Balazsi G, Ravasz E, Daugherty M, et al. Experimental determination and system level analysis of essential genes in Escherichia coli MG1655. J Bacteriol. 2003;185:5673-84 pubmed
    ..coli genes to be preserved throughout the bacterial kingdom. Projection of these data over metabolic subsystems reveals topologic modules with essential and evolutionarily preserved enzymes with reduced capacity for error tolerance. ..