Phylogenetic analysis of condensation domains in the nonribosomal peptide synthetases

Autor: Kenji Washio, Shigenori Kanaya, Masaaki Morikawa, Kazufumi Takano, Niran Roongsawang, Siew Ping Lim
Rok vydání: 2005
Předmět:
Zdroj: FEMS Microbiology Letters. 252:143-151
ISSN: 1574-6968
0378-1097
DOI: 10.1016/j.femsle.2005.08.041
Popis: Condensation (C) domains in the nonribosomal peptide synthetases are capable of catalyzing peptide bond formation between two consecutively bound various amino acids. C-domains coincide in frequency with the number of peptide bonds in the product peptide. In this study, a phylogenetic approach was used to investigate structural diversity of bacterial C-domains. Phylogenetic trees show that the C-domains are clustered into three functional groups according to the types of substrate donor molecules. They are l-peptidyl donors, d-peptidyl donors, and N-acyl donors. The fact that C-domain structure is not subject to optical configuration of amino acid acceptor molecules supports an idea that the conversion from l to d-form of incorporating amino acid acceptor occurs during or after peptide bond formation. l-peptidyl donors and d-peptidyl donors are suggested to separate before separating the lineage of Gram-positive and Gram-negative bacteria in the evolution process.
Databáze: OpenAIRE