Madan_2010_Appl.Microbiol.Biotechnol_85_597

Reference

Title : Co-expression of the lipase and foldase of Pseudomonas aeruginosa to a functional lipase in Escherichia coli - Madan_2010_Appl.Microbiol.Biotechnol_85_597
Author(s) : Madan B , Mishra P
Ref : Applied Microbiology & Biotechnology , 85 :597 , 2010
Abstract :

The lipA gene, a structural gene encoding for protein of molecular mass 48 kDa, and lipB gene, encoding for a lipase-specific chaperone with molecular mass of 35 kDa, of Pseudomonas aeruginosa B2264 were co-expressed in heterologous host Escherichia coli BL21 (DE3) to obtain in vivo expression of functional lipase. The recombinant lipase was expressed with histidine tag at its N terminus and was purified to homogeneity using nickel affinity chromatography. The amino acid sequence of LipA and LipB of P. aeruginosa B2264 was 99-100% identical with the corresponding sequence of LipA and LipB of P. aeruginosa LST-03 and P. aeruginosa PA01, but it has less identity with Pseudomonas cepacia (Burkholderia cepacia) as it showed only 37.6% and 23.3% identity with the B. cepacia LipA and LipB sequence, respectively. The molecular mass of the recombinant lipase was found to be 48 kDa. The recombinant lipase exhibited optimal activity at pH 8.0 and 37 degrees C, though it was active between pH 5.0 and pH 9.0 and up to 45 degrees C. K (m) and V (max) values for recombinant P. aeruginosa lipase were found to be 151.5 +/- 29 microM and 217 +/- 22.5 micromol min(-1) mg(-1) protein, respectively.

PubMedSearch : Madan_2010_Appl.Microbiol.Biotechnol_85_597
PubMedID: 19629472
Gene_locus related to this paper: pseae-llipa

Related information

Gene_locus pseae-llipa

Citations formats

Madan B, Mishra P (2010)
Co-expression of the lipase and foldase of Pseudomonas aeruginosa to a functional lipase in Escherichia coli
Applied Microbiology & Biotechnology 85 :597

Madan B, Mishra P (2010)
Applied Microbiology & Biotechnology 85 :597