Microcin

Subtilosin_A

structure of Subtilosin A
Identifiers
Symbol Subtilosin_A
Pfam PF11420
InterPro IPR021539
TCDB 9.A.52
OPM superfamily 164
OPM protein 1q71

Microcins are very small bacteriocins, composed of a relatively few peptides. For this reason, they are distinct from their larger protein cousins. The classic example is microcin V, of E. coli. Subtilosin A is another bacteriocin from Bacillus subtilis. The peptide has a cyclized backbone and forms three cross-links between the sulphurs of Cys13, Cys7 and Cys4 and the alpha-positions of Phe22,Thr28 and Phe31.[1]

BACTIBASE[2][3] database is an open-access database for bacteriocins including microcins (view complete list).

References

  1. Kawulka KE, Sprules T, Diaper CM, Whittal RM, McKay RT, Mercier P, Zuber P, Vederas JC (March 2004). "Structure of subtilosin A, a cyclic antimicrobial peptide from Bacillus subtilis with unusual sulfur to alpha-carbon cross-links: formation and reduction of alpha-thio-alpha-amino acid derivatives". Biochemistry 43 (12): 3385–95. doi:10.1021/bi0359527. PMID 15035610.
  2. Hammami R, Zouhir A, Ben Hamida J, Fliss I (2007). "BACTIBASE: a new web-accessible database for bacteriocin characterization". BMC Microbiology 7: 89. doi:10.1186/1471-2180-7-89. PMC 2211298. PMID 17941971.
  3. Hammami R, Zouhir A, Le Lay C, Ben Hamida J, Fliss I (2010). "BACTIBASE second release: a database and tool platform for bacteriocin characterization.". BMC Microbiology 10: 22. doi:10.1186/1471-2180-10-22. PMC 2824694. PMID 20105292.
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