dbCAN-seq: a database of CAZyme sequence and annotation

Basic Information help

Species

Schleiferilactobacillus harbinensis

Lineage

Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae; Schleiferilactobacillus; Schleiferilactobacillus harbinensis

CAZyme ID

MGYG000002774_00446

CAZy Family

GH20

CAZyme Description

hypothetical protein

CAZyme Property

Protein Length	CGC	Molecular Weight	Isoelectric Point
626	MGYG000002774_1\|CGC7	69945.31	4.5561

Genome Property

Genome Assembly ID	Genome Size	Genome Type	Country	Continent
MGYG000002774	3078759	MAG	United States	North America

Gene Location

Start: 450389; End: 452269 Strand: +

Enzyme Prediction help

No EC number prediction in MGYG000002774_00446.

CAZyme Signature Domains help

Family	Start	End	Evalue	family coverage
GH20	83	397	4.1e-30	0.9703264094955489

CDD Domains download full data without filtering help

Cdd ID	Domain	E-Value	qStart	qEnd	sStart	sEnd	Domain Description
cd06565	GH20_GcnA-like	8.03e-89	92	393	3	297	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.
pfam18088	Glyco_H_20C_C	1.01e-59	419	599	2	180	Glycoside Hydrolase 20C C-terminal domain. This is the C-terminal domain of Glycoside hydrolase 20 C (GH20C) present in S. pneumoniae. GH20C possesses the ability to hydrolyze the beta-linkages joining either N-acetylglucosamine or N-acetylgalactosamine to a wide variety of aglycon residues. The C-terminal domain is commonly known as Domain III is important in dimerization as it forms the primary interface of the dimer. However, there is presently no evidence supporting dimerization as being necessary for catalysis. Domain III is unusual among structurally characterized GH20 enzymes but in GH20 enzymes possessing domain III, dimerization seems to be a conserved feature.
cd02742	GH20_hexosaminidase	1.97e-35	92	397	3	303	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.
pfam00728	Glyco_hydro_20	2.98e-12	133	274	66	223	Glycosyl hydrolase family 20, catalytic domain. This domain has a TIM barrel fold.
cd06562	GH20_HexA_HexB-like	1.04e-08	131	274	47	212	Beta-N-acetylhexosaminidases 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. The hexA and hexB genes encode the alpha- and beta-subunits of the two major beta-N-acetylhexosaminidase isoenzymes, N-acetyl-beta-D-hexosaminidase A (HexA) and beta-N-acetylhexosaminidase B (HexB). Both the alpha and the beta catalytic subunits have a TIM-barrel fold and belong to the glycosyl hydrolase family 20 (GH20). The HexA enzyme is a heterodimer containing one alpha and one beta subunit while the HexB enzyme is a homodimer containing two beta-subunits. Hexosaminidase mutations cause an inability to properly hydrolyze certain sphingolipids which accumulate in lysosomes within the brain, resulting in the lipid storage disorders Tay-Sachs and Sandhoff. Mutations in the alpha subunit cause in a deficiency in the HexA enzyme and result in Tay-Sachs, mutations in the beta-subunit cause in a deficiency in both HexA and HexB enzymes and result in Sandhoff disease. In both disorders GM(2) gangliosides accumulate in lysosomes. 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.

CAZyme Hits help

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End
QFR22220.1	0.0	1	626	1	626
QEU48379.1	0.0	1	626	1	626
QFR63784.1	5.74e-292	1	581	8	588
QOG26157.1	3.46e-168	17	626	16	620
QCT91588.1	3.46e-168	17	626	16	620

PDB Hits download full data without filtering help

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End	Description
2EPL_X	2.25e-95	40	607	33	604	N-acetyl-B-D-glucosaminidase(GCNA) from Streptococcus gordonii [Streptococcus gordonii],2EPM_X N-acetyl-B-D-glucoasminidase (GCNA) from Stretococcus gordonii [Streptococcus gordonii],2EPN_A N-acetyl-B-D-glucosaminidase (GCNA) from Streptococcus gordonii [Streptococcus gordonii],2EPN_B N-acetyl-B-D-glucosaminidase (GCNA) from Streptococcus gordonii [Streptococcus gordonii],2EPO_A N-acetyl-B-D-glucosaminidase (GCNA) from Streptococcus gordonii [Streptococcus gordonii],2EPO_B N-acetyl-B-D-glucosaminidase (GCNA) from Streptococcus gordonii [Streptococcus gordonii]
5A6B_D	1.05e-94	46	595	62	613	GH20C,Beta-hexosaminidase from Streptococcus pneumoniae in complex with PUGNAc [Streptococcus pneumoniae TIGR4]
5A69_A	6.16e-93	46	595	62	614	GH20C,Beta-hexosaminidase from Streptococcus pneumoniae in complex with Gal-PUGNAc [Streptococcus pneumoniae TIGR4],5A6A_A GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with NGT [Streptococcus pneumoniae TIGR4],5A6A_B GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with NGT [Streptococcus pneumoniae TIGR4],5A6J_A GH20C, Beta-hexosaminidase from Streptococcus pneumoniae [Streptococcus pneumoniae TIGR4],5A6J_B GH20C, Beta-hexosaminidase from Streptococcus pneumoniae [Streptococcus pneumoniae TIGR4],5A6J_C GH20C, Beta-hexosaminidase from Streptococcus pneumoniae [Streptococcus pneumoniae TIGR4],5A6J_D GH20C, Beta-hexosaminidase from Streptococcus pneumoniae [Streptococcus pneumoniae TIGR4],5A6K_A GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with Gal-NGT [Streptococcus pneumoniae TIGR4],5A6K_B GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with Gal-NGT [Streptococcus pneumoniae TIGR4],5AC5_A GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with GlcNAc [Streptococcus pneumoniae TIGR4],5AC5_B GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with GlcNAc [Streptococcus pneumoniae TIGR4]
5A6B_A	6.16e-93	46	595	62	614	GH20C,Beta-hexosaminidase from Streptococcus pneumoniae in complex with PUGNAc [Streptococcus pneumoniae TIGR4],5A6B_B GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with PUGNAc [Streptococcus pneumoniae TIGR4],5A6B_C GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with PUGNAc [Streptococcus pneumoniae TIGR4]
5AC4_A	1.70e-92	46	595	62	614	GH20C,Beta-hexosaminidase from Streptococcus pneumoniae in complex with GalNAc [Streptococcus pneumoniae TIGR4],5AC4_B GH20C, Beta-hexosaminidase from Streptococcus pneumoniae in complex with GalNAc [Streptococcus pneumoniae TIGR4]