exopolysaccharide biosynthesis operon protein EpsL
The epsL gene is described as a component of the methanolan exopolysaccharide biosynthesis operon in Methylobacillus sp strain 12S, although no other information regarding its possible function is suggested. Homologs of this gene are found in several other exopolysaccharide operons in a small number of species. These operons contain a subset of the methanolan operon genes by homology and synteny, including the epsH gene which is proposed to act as an "exosortase" directing proteins with a C-terminal tag (PEP-CTERM) to the exopolysaccharide layer. Each of the genomes in which these genes and epsL are found also encode genes with these C-terminal tags.