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Pathway Description
Dapsone Action Pathway
Mycobacterium leprae
Category:
Metabolite Pathway
Sub-Category:
Drug Action
Created: 2023-08-29
Last Updated: 2023-11-27
Dapsone is an antibacterial from the sulfone drug class. It is indicated for the treatment of acne vulgaris, Hansen's disease, and dermatitis herpetiformis. Its main action is against Mycobacterium leprae. This drug acts against bacteria and protozoa by binding to the dihydropteroate synthetase enzyme. This is a competitive inhibition in the active site of para-amino-benzoate on the protein. It results in the inhibition of an essential reaction in the synthesis of dihydrofolic acid. The inability to produce folic acid results in the inhibition of the growth of the bacteria or protozoa. This drug is mostly administered as a topical gel. It is also available as an oral tablet.
References
Dapsone Pathway References
Wishart DS, Feunang YD, Guo AC, Lo EJ, Marcu A, Grant JR, Sajed T, Johnson D, Li C, Sayeeda Z, Assempour N, Iynkkaran I, Liu Y, Maciejewski A, Gale N, Wilson A, Chin L, Cummings R, Le D, Pon A, Knox C, Wilson M: DrugBank 5.0: a major update to the DrugBank database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D1074-D1082. doi: 10.1093/nar/gkx1037.
Pubmed: 29126136
Gillis TP, Williams DL: Dapsone resistance does not appear to be associated with a mutation in the dihydropteroate synthase-2 gene of Mycobacterium leprae. Indian J Lepr. 1999 Jan-Mar;71(1):11-8.
Pubmed: 10439322
Williams DL, Spring L, Harris E, Roche P, Gillis TP: Dihydropteroate synthase of Mycobacterium leprae and dapsone resistance. Antimicrob Agents Chemother. 2000 Jun;44(6):1530-7. doi: 10.1128/AAC.44.6.1530-1537.2000.
Pubmed: 10817704
Swedberg G, Fermer C, Skold O: Point mutations in the dihydropteroate synthase gene causing sulfonamide resistance. Adv Exp Med Biol. 1993;338:555-8. doi: 10.1007/978-1-4615-2960-6_113.
Pubmed: 8304179
Dallas WS, Gowen JE, Ray PH, Cox MJ, Dev IK: Cloning, sequencing, and enhanced expression of the dihydropteroate synthase gene of Escherichia coli MC4100. J Bacteriol. 1992 Sep;174(18):5961-70. doi: 10.1128/jb.174.18.5961-5970.1992.
Pubmed: 1522070
Blattner FR, Plunkett G 3rd, Bloch CA, Perna NT, Burland V, Riley M, Collado-Vides J, Glasner JD, Rode CK, Mayhew GF, Gregor J, Davis NW, Kirkpatrick HA, Goeden MA, Rose DJ, Mau B, Shao Y: The complete genome sequence of Escherichia coli K-12. Science. 1997 Sep 5;277(5331):1453-62. doi: 10.1126/science.277.5331.1453.
Pubmed: 9278503
Bognar AL, Osborne C, Shane B: Primary structure of the Escherichia coli folC gene and its folylpolyglutamate synthetase-dihydrofolate synthetase product and regulation of expression by an upstream gene. J Biol Chem. 1987 Sep 5;262(25):12337-43.
Pubmed: 3040739
Kimlova LJ, Pyne C, Keshavjee K, Huy J, Beebakhee G, Bognar AL: Mutagenesis of the folC gene encoding folylpolyglutamate synthetase-dihydrofolate synthetase in Escherichia coli. Arch Biochem Biophys. 1991 Jan;284(1):9-16. doi: 10.1016/0003-9861(91)90254-g.
Pubmed: 1989505
Nonet ML, Marvel CC, Tolan DR: The hisT-purF region of the Escherichia coli K-12 chromosome. Identification of additional genes of the hisT and purF operons. J Biol Chem. 1987 Sep 5;262(25):12209-17.
Pubmed: 3040734
Bennett CD, Rodkey JA, Sondey JM, Hirschmann R: Dihydrofolate reductase: the amino acid sequence of the enzyme from a methotrexate-resistant mutant of Escherichia coli. Biochemistry. 1978 Apr 4;17(7):1328-37. doi: 10.1021/bi00600a030.
Pubmed: 350268
Stone D, Phillips AW, Burchall JJ: The amino-acid sequence of the dihydrofolate reductase of a trimethoprim-resistant strain of Escherichia coli. Eur J Biochem. 1977 Feb;72(3):613-24. doi: 10.1111/j.1432-1033.1977.tb11284.x.
Pubmed: 320005
Smith DR, Calvo JM: Nucleotide sequence of the E coli gene coding for dihydrofolate reductase. Nucleic Acids Res. 1980 May 24;8(10):2255-74. doi: 10.1093/nar/8.10.2255.
Pubmed: 6159575
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