Gene_locus Report for: agrvs-b9jym4

Agrobacterium vitis (Rhizobium vitis) Putative hydrolase Avi_0199 (YP_002548124.1 WP_012654650)

(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 > Proteobacteria: N E > Alphaproteobacteria: N E > Rhizobiales: N E > Rhizobiaceae: N E > Rhizobium/Agrobacterium group: N E > Agrobacterium: N E > Agrobacterium vitis: N E

Title: Identification of lipases with activity towards monoacylglycerol by criterion of conserved cap architectures
Riegler-Berket L, Leitmeier A, Aschauer P, Dreveny I, Oberer M
Ref: Biochimica & Biophysica Acta, 1863:679, 2018 : PubMed
Abstract


ESTHER: Riegler-Berket_2018_Biochim.Biophys.Acta_1863_679
PubMedSearch: Riegler-Berket 2018 Biochim.Biophys.Acta 1863 679
PubMedID: 29627382
Gene_locus related to this paper: 9bact-TtEst, agrvs-b9jym4, bac25-mglp, bacsu-cbxnp, human-MGLL, symth-q67mr3, vibch-VC1974, yeast-mgll

Abstract

Monoacylglycerol lipases (MGL) are a subclass of lipases that predominantly hydrolyze monoacylglycerol (MG) into glycerol and fatty acid. MGLs are ubiquitous enzymes across species and play a role in lipid metabolism, affecting energy homeostasis and signaling processes. Structurally, MGLs belong to the alpha/beta hydrolase fold family with a cap covering the substrate binding pocket. Analysis of the known 3D structures of human, yeast and bacterial MGLs revealed striking similarity of the cap architecture. Since MGLs from different organisms share very low sequence similarity, it is difficult to identify MGLs based on the amino acid sequence alone. Here, we investigated whether the cap architecture could be a characteristic feature of this subclass of lipases with activity towards MG and whether it is possible to identify MGLs based on the cap shape. Through database searches, we identified the structures of five different candidate alpha/beta hydrolase fold proteins with unknown or reported esterase activity. These proteins exhibit cap architecture similarities to known human, yeast and bacterial MGL structures. Out of these candidates we confirmed MGL activity for the protein LipS, which displayed the highest structural similarity to known MGLs. Two further enzymes, Avi_0199 and VC1974, displayed low level MGL activities. These findings corroborate our hypothesis that this conserved cap architecture can be used as criterion to identify lipases with activity towards MGs.