Rhamnogalacturan_acetylesterase_like subgroup of SGNH-hydrolases. Rhamnogalacturan acetylesterase removes acetyl esters from rhamnogalacturonan substrates, and renders them susceptible to degradation by rhamnogalacturonases. Rhamnogalacturonans are highly branched regions in pectic polysaccharides, consisting of repeating -(1,2)-L-Rha-(1,4)-D-GalUA disaccharide units, with many rhamnose residues substituted by neutral oligosaccharides such as arabinans, galactans and arabinogalactans. Extracellular enzymes participating in the degradation of plant cell wall polymers, such as Rhamnogalacturonan acetylesterase, would typically be found in saprophytic and plant pathogenic fungi and bacteria.

Putative catalytic NodB homology domain of gellan lyase and similar proteins. This family is represented by the extracellular polysaccharide-degrading enzyme, gellan lyase (gellanase, EC 4.2.2.-), from Bacillus sp. The enzyme acts on gellan exolytically and releases a tetrasaccharide of glucuronyl-glucosyl-rhamnosyl-glucose with unsaturated glucuronic acid at the nonreducing terminus. The family also includes many uncharacterized prokaryotic polysaccharide deacetylases, which show high sequence similarity to Bacillus sp. gellan lyase. Although their biological functions remain unknown, all members of the family contain a conserved domain with a 6-stranded beta/alpha barrel, which is similar to the catalytic NodB homology domain of rhizobial NodB-like proteins, belonging to the larger carbohydrate esterase 4 (CE4) superfamily.

Lysophospholipase L1 or related esterase [Amino acid transport and metabolism].

SGNH_hydrolase, or GDSL_hydrolase, is a diverse family of lipases and esterases. The tertiary fold of the enzyme is substantially different from that of the alpha/beta hydrolase family and unique among all known hydrolases; its active site closely resembles the typical Ser-His-Asp(Glu) triad from other serine hydrolases, but may lack the carboxlic acid.

GDSL-like Lipase/Acylhydrolase family. This family of presumed lipases and related enzymes are similar to pfam00657.

RHAMNOGALACTURONANACETYLESTERASE FROM ASPERGILLUS ACULEATUS AT 1.55 A RESOLUTION WITH SO4 IN THE ACTIVE SITE [Aspergillus aculeatus],1DEX_A RHAMNOGALACTURONAN ACETYLESTERASE FROM ASPERGILLUS ACULEATUS AT 1.9 A RESOLUTION [Aspergillus aculeatus],1K7C_A Rhamnogalacturonan acetylesterase with seven N-linked carbohydrate residues distributed at two N-glycosylation sites refined at 1.12 A resolution [Aspergillus aculeatus],1PP4_A The crystal structure of rhamnogalacturonan acetylesterase in space group P3121 [Aspergillus aculeatus],1PP4_B The crystal structure of rhamnogalacturonan acetylesterase in space group P3121 [Aspergillus aculeatus]

ChainA, Rhamnogalacturonan acetylesterase [Aspergillus aculeatus]

Probable rhamnogalacturonan acetylesterase YesY OS=Bacillus subtilis (strain 168) OX=224308 GN=yesY PE=1 SV=1

Rhamnogalacturonan acetylesterase RhgT OS=Bacillus subtilis (strain 168) OX=224308 GN=rhgT PE=1 SV=1

Rhamnogalacturonan acetylesterase OS=Aspergillus aculeatus OX=5053 GN=rha1 PE=1 SV=1

Rhamnogalacturonan acetylesterase OS=Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139) OX=227321 GN=AN2528 PE=1 SV=1