Gene_locus Report for: paeam-PLAA

(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.)
> cellular organisms: N E > Bacteria: N E > Terrabacteria group: N E > Firmicutes: N E > Bacilli: N E > Bacillales: N E > Paenibacillaceae: N E > Paenibacillus: N E > Paenibacillus amylolyticus: N E

Title: Cloning and sequencing of a poly(DL-lactic acid) depolymerase gene from Paenibacillus amylolyticus strain TB-13 and its functional expression in Escherichia coli
Akutsu-Shigeno Y, Teeraphatpornchai T, Teamtisong K, Nomura N, Uchiyama H, Nakahara T, Nakajima-kambe T
Ref: Applied Environmental Microbiology, 69:2498, 2003 : PubMed
Abstract


ESTHER: Akutsu-Shigeno_2003_Appl.Environ.Microbiol_69_2498
PubMedSearch: Akutsu-Shigeno 2003 Appl.Environ.Microbiol 69 2498
PubMedID: 12732514
Gene_locus related to this paper: paeam-PLAA

Abstract

The gene encoding a poly(DL-lactic acid) (PLA) depolymerase from Paenibacillus amylolyticus strain TB-13 was cloned and overexpressed in Escherichia coli. The purified recombinant PLA depolymerase, PlaA, exhibited degradation activities toward various biodegradable polyesters, such as poly(butylene succinate), poly(butylene succinate-co-adipate), poly(ethylene succinate), and poly(epsilon-caprolactone), as well as PLA. The monomeric lactic acid was detected as the degradation product of PLA. The substrate specificity toward triglycerides and p-nitrophenyl esters indicated that PlaA is a type of lipase. The gene encoded 201 amino acid residues, including the conserved pentapeptide Ala-His-Ser-Met-Gly, present in the lipases of mesophilic Bacillus species. The identity of the amino acid sequence of PlaA with Bacillus lipases was no more than 45 to 50%, and some of its properties were different from those of these lipases.