| Title : Expression, purification and characterization of a functional, recombinant, cold-active lipase (LipA) from psychrotrophic Yersinia enterocolitica - Ji_2015_Protein.Expr.Purif_115_125 |
| Author(s) : Ji X , Li S , Wang B , Zhang Q , Lin L , Dong Z , Wei Y |
| Ref : Protein Expr Purif , 115 :125 , 2015 |
| Abstract : A novel cold-active lipase gene encoding 294 amino acid residues was obtained from the Yersinia enterocolitica strain KM1. Sequence alignment and phylogenetic analysis revealed that this novel lipase is a new member of the bacterial lipase family I.1. The lipase shares the conserved GXSXG motif and catalytic triad Ser85-Asp239-His261. The recombinant protein LipA was solubly and heterogeneously expressed in Escherichia coli, purified by Ni-affinity chromatography, and then characterized. LipA was active over a broad range spanning 15-60 degrees C with an optimum activity at 25 degrees C and across a wide pH range from 5.0 to 11.0 with an optimum activity at pH 7.5. The molecular weight was estimated to be 34.2KDa. The lipase could be activated by Mg(2+) and a low concentration (10%) of ethanol, dimethyl sulfoxide, methanol and acetonitrile, whereas it was strongly inhibited by Zn(2+), Cu(2+) and Mn(2+). This cold-active lipase may be a good candidate for detergents and biocatalysts at low temperature. |
| ESTHER : Ji_2015_Protein.Expr.Purif_115_125 |
| PubMedSearch : Ji_2015_Protein.Expr.Purif_115_125 |
| PubMedID: 26256062 |
Ji X, Li S, Wang B, Zhang Q, Lin L, Dong Z, Wei Y (2015)
Expression, purification and characterization of a functional, recombinant, cold-active lipase (LipA) from psychrotrophic Yersinia enterocolitica
Protein Expr Purif
115 :125
Ji X, Li S, Wang B, Zhang Q, Lin L, Dong Z, Wei Y (2015)
Protein Expr Purif
115 :125