dbCAN-seq: a database of CAZyme sequence and annotation

Basic Information help

Species

Lineage

Bacteria; Firmicutes_A; Clostridia; Oscillospirales; Ruminococcaceae; UMGS1826;

CAZyme ID

MGYG000000450_00881

CAZy Family

GH20

CAZyme Description

hypothetical protein

CAZyme Property

Protein Length	CGC	Molecular Weight	Isoelectric Point
644	MGYG000000450_13\|CGC1	73699.97	5.0497

Genome Property

Genome Assembly ID	Genome Size	Genome Type	Country	Continent
MGYG000000450	2671977	MAG	Sweden	Europe

Gene Location

Start: 27001; End: 28935 Strand: +

Enzyme Prediction help

No EC number prediction in MGYG000000450_00881.

CAZyme Signature Domains help

Family	Start	End	Evalue	family coverage
GH20	140	383	4.4e-37	0.6735905044510386

CDD Domains download full data without filtering help

Cdd ID	Domain	E-Value	qStart	qEnd	sStart	sEnd	Domain Description
cd06565	GH20_GcnA-like	1.23e-27	136	341	12	185	Glycosyl hydrolase family 20 (GH20) catalytic domain of N-acetyl-beta-D-glucosaminidase (GcnA, also known as BhsA) and related proteins. GcnA is an exoglucosidase which cleaves N-acetyl-beta-D-galactosamine (NAG) and N-acetyl-beta-D-galactosamine residues from 4-methylumbelliferylated (4MU) substrates, as well as cleaving NAG from chito-oligosaccharides (i.e. NAG polymers). In contrast, sulfated forms of the substrate are unable to be cleaved and act instead as mild competitive inhibitors. Additionally, the enzyme is known to be poisoned by several first-row transition metals as well as by mercury. GcnA forms a homodimer with subunits comprised of three domains, an N-terminal zincin-like domain, this central catalytic GH20 domain, and a C-terminal alpha helical domain. The GH20 hexosaminidases are thought to act via a catalytic mechanism in which the catalytic nucleophile is not provided by solvent or the enzyme, but by the substrate itself.
cd06563	GH20_chitobiase-like	4.80e-23	212	342	80	226	The chitobiase of Serratia marcescens is a beta-N-1,4-acetylhexosaminidase with a glycosyl hydrolase family 20 (GH20) domain that hydrolyzes the beta-1,4-glycosidic linkages in oligomers derived from chitin. Chitin is degraded by a two step process: i) a chitinase hydrolyzes the chitin to oligosaccharides and disaccharides such as di-N-acetyl-D-glucosamine and chitobiose, ii) chitobiase then further degrades these oligomers into monomers. This GH20 domain family includes an N-acetylglucosamidase (GlcNAcase A) from Pseudoalteromonas piscicida and an N-acetylhexosaminidase (SpHex) from Streptomyces plicatus. SpHex lacks the C-terminal PKD (polycystic kidney disease I)-like domain found in the chitobiases. The GH20 hexosaminidases are thought to act via a catalytic mechanism in which the catalytic nucleophile is not provided by solvent or the enzyme, but by the substrate itself.
pfam00728	Glyco_hydro_20	8.92e-21	187	342	51	221	Glycosyl hydrolase family 20, catalytic domain. This domain has a TIM barrel fold.
cd06564	GH20_DspB_LnbB-like	6.98e-19	212	340	75	199	Glycosyl hydrolase family 20 (GH20) catalytic domain of dispersin B (DspB), lacto-N-biosidase (LnbB) and related proteins. Dispersin B is a soluble beta-N-acetylglucosamidase found in bacteria that hydrolyzes the beta-1,6-linkages of PGA (poly-beta-(1,6)-N-acetylglucosamine), a major component of the extracellular polysaccharide matrix. Lacto-N-biosidase hydrolyzes lacto-N-biose (LNB) type I oligosaccharides at the nonreducing terminus to produce lacto-N-biose as part of the GNB/LNB (galacto-N-biose/lacto-N-biose I) degradation pathway. The lacto-N-biosidase from Bifidobacterium bifidum has this GH20 domain, a carbohydrate binding module 32, and a bacterial immunoglobulin-like domain 2, as well as a YSIRK signal peptide and a G5 membrane anchor at the N and C termini, respectively. The GH20 hexosaminidases are thought to act via a catalytic mechanism in which the catalytic nucleophile is not provided by solvent or the enzyme, but by the substrate itself.
cd02742	GH20_hexosaminidase	5.82e-17	210	342	63	192	Beta-N-acetylhexosaminidases of glycosyl hydrolase family 20 (GH20) catalyze the removal of beta-1,4-linked N-acetyl-D-hexosamine residues from the non-reducing ends of N-acetyl-beta-D-hexosaminides including N-acetylglucosides and N-acetylgalactosides. These enzymes are broadly distributed in microorganisms, plants and animals, and play roles in various key physiological and pathological processes. These processes include cell structural integrity, energy storage, cellular signaling, fertilization, pathogen defense, viral penetration, the development of carcinomas, inflammatory events and lysosomal storage disorders. The GH20 enzymes include the eukaryotic beta-N-acetylhexosaminidases A and B, the bacterial chitobiases, dispersin B, and lacto-N-biosidase. The GH20 hexosaminidases are thought to act via a catalytic mechanism in which the catalytic nucleophile is not provided by the solvent or the enzyme, but by the substrate itself.

CAZyme Hits help

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End
SDT51451.1	6.82e-170	4	621	1	621
AZN43054.1	1.28e-161	13	627	18	648
QHW34780.1	3.84e-154	74	641	78	660
AUS96058.1	2.17e-149	32	600	23	619
AOS71572.1	2.23e-135	16	609	16	634

PDB Hits download full data without filtering help

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End	Description
6JE8_A	1.23e-17	71	393	34	366	crystalstructure of a beta-N-acetylhexosaminidase [Akkermansia muciniphila ATCC BAA-835],6JEA_A crystal structure of a beta-N-acetylhexosaminidase [Akkermansia muciniphila ATCC BAA-835],6JEB_A crystal structure of a beta-N-acetylhexosaminidase [Akkermansia muciniphila ATCC BAA-835]
4PYS_A	1.62e-13	162	344	172	345	Thecrystal structure of beta-N-acetylhexosaminidase from Bacteroides fragilis NCTC 9343 [Bacteroides fragilis NCTC 9343],4PYS_B The crystal structure of beta-N-acetylhexosaminidase from Bacteroides fragilis NCTC 9343 [Bacteroides fragilis NCTC 9343]
6Q63_A	2.41e-13	69	342	100	390	BT0459[Bacteroides thetaiotaomicron],6Q63_B BT0459 [Bacteroides thetaiotaomicron],6Q63_C BT0459 [Bacteroides thetaiotaomicron]
6YHH_A	2.01e-12	71	300	88	317	X-rayStructure of Flavobacterium johnsoniae chitobiase (FjGH20) [Flavobacterium johnsoniae UW101],6YHH_B X-ray Structure of Flavobacterium johnsoniae chitobiase (FjGH20) [Flavobacterium johnsoniae UW101]
7CBN_A	6.14e-11	75	342	78	359	Crystalstructure of beta-N-acetylhexosaminidase Am0868 from Akkermansia muciniphila [Akkermansia muciniphila ATCC BAA-835],7CBO_A Crystal structure of beta-N-acetylhexosaminidase Am0868 from Akkermansia muciniphila in complex with GlcNAc [Akkermansia muciniphila ATCC BAA-835]

Swiss-Prot Hits download full data without filtering help

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End	Description
B2UP57	7.58e-17	71	393	55	387	Beta-hexosaminidase Amuc_2018 OS=Akkermansia muciniphila (strain ATCC BAA-835 / DSM 22959 / JCM 33894 / BCRC 81048 / CCUG 64013 / CIP 107961 / Muc) OX=349741 GN=Amuc_2018 PE=1 SV=1
P49008	5.69e-16	64	342	100	386	Beta-hexosaminidase OS=Porphyromonas gingivalis (strain ATCC BAA-308 / W83) OX=242619 GN=nahA PE=3 SV=2
P96155	1.24e-10	74	300	207	435	Beta-hexosaminidase OS=Vibrio furnissii OX=29494 GN=exoI PE=1 SV=1
B2UQG6	3.43e-10	75	342	97	378	Beta-hexosaminidase Amuc_0868 OS=Akkermansia muciniphila (strain ATCC BAA-835 / DSM 22959 / JCM 33894 / BCRC 81048 / CCUG 64013 / CIP 107961 / Muc) OX=349741 GN=Amuc_0868 PE=1 SV=1
P43077	1.88e-06	70	391	107	421	Beta-hexosaminidase OS=Candida albicans OX=5476 GN=HEX1 PE=1 SV=1

SignalP and Lipop Annotations help

This protein is predicted as OTHER

Other	SP_Sec_SPI	LIPO_Sec_SPII	TAT_Tat_SPI	TATLIP_Sec_SPII	PILIN_Sec_SPIII
1.000073	0.000000	0.000000	0.000000	0.000000	0.000000

TMHMM Annotations help

There is no transmembrane helices in MGYG000000450_00881.

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