dbCAN-seq: a database of CAZyme sequence and annotation

Basic Information help

Species

Uncinocarpus reesii

Lineage

Ascomycota; Eurotiomycetes; ; Onygenaceae; Uncinocarpus; Uncinocarpus reesii

CAZyme ID

EEP81709.1

CAZy Family

GT31

CAZyme Description

beta-hexosaminidase

CAZyme Property

Protein Length	CGC	Molecular Weight	Isoelectric Point
596		68409.20	6.6585

Genome Property

Genome Version/Assembly ID	Genes	Strain NCBI Taxon ID	Non Protein Coding Genes	Protein Coding Genes
FungiDB-61_Ureesii1704	7856	336963	96	7760

Gene Location

Enzyme Prediction help

EC	3.2.1.52:13

CAZyme Signature Domains help

Family	Start	End	Evalue	family coverage
GH20	170	540	4.6e-94	0.9792284866468842

CDD Domains download full data without filtering help

Cdd ID	Domain	E-Value	qStart	qEnd	sStart	sEnd	Domain Description
119332	GH20_HexA_HexB-like	5.50e-145	177	568	1	348	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.
395590	Glyco_hydro_20	2.60e-124	177	540	1	345	Glycosyl hydrolase family 20, catalytic domain. This domain has a TIM barrel fold.
119333	GH20_chitobiase-like	2.32e-69	177	545	1	349	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.
119331	GH20_hexosaminidase	3.79e-55	180	539	2	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.
119338	GH20_chitobiase-like_1	9.17e-54	180	539	4	297	A functionally uncharacterized subgroup of the Glycosyl hydrolase family 20 (GH20) catalytic domain found in proteins similar to the chitobiase of Serratia marcescens, a beta-N-1,4-acetylhexosaminidase 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 subgroup 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.

CAZyme Hits help

Hit ID	E-Value	Query Start	Query End	Hit Start
0.0	1	596	1	595
9.86e-292	19	595	23	601
1.14e-290	19	595	23	601
4.99e-285	1	595	1	602
4.99e-285	1	595	1	602

PDB Hits download full data without filtering help

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End
1.71e-253	105	595	8	498	Crystal structure of native beta-N-acetylhexosaminidase isolated from Aspergillus oryzae [Aspergillus oryzae],5OAR_D Crystal structure of native beta-N-acetylhexosaminidase isolated from Aspergillus oryzae [Aspergillus oryzae]
1.21e-82	120	586	125	570	Crystal Structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 from Ostrinia furnacalis [Ostrinia furnacalis],3NSN_A Crystal Structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 complexed with TMG-chitotriomycin [Ostrinia furnacalis],3OZO_A Crystal Structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 complexed with NGT [Ostrinia furnacalis],3OZP_A Crystal Structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 complexed with PUGNAc [Ostrinia furnacalis]
1.21e-82	120	586	125	570	Crystal structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 complexed with naphthalimide derivative Q1 [Ostrinia furnacalis],3WMC_A Crystal structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 complexed with naphthalimide derivative Q2 [Ostrinia furnacalis]
1.40e-82	120	586	125	570	Crystal Structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 complexed with a berberine derivative (SYSU-00679) [Ostrinia furnacalis]
4.99e-82	120	586	128	573	Crystal Structure of insect beta-N-acetyl-D-hexosaminidase OfHex1 V327G complexed with PUGNAc [Ostrinia furnacalis]

Swiss-Prot Hits download full data without filtering help

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End
0.0	1	596	1	595	Beta-hexosaminidase 1 OS=Coccidioides posadasii (strain RMSCC 757 / Silveira) OX=443226 GN=HEX1 PE=1 SV=1
8.86e-286	1	595	1	602	Beta-hexosaminidase OS=Emericella nidulans OX=162425 GN=nagA PE=1 SV=1
5.79e-281	19	595	18	599	Beta-hexosaminidase OS=Aspergillus oryzae OX=5062 GN=nagA PE=1 SV=1
8.66e-263	19	596	32	615	Probable beta-hexosaminidase ARB_01353 OS=Arthroderma benhamiae (strain ATCC MYA-4681 / CBS 112371) OX=663331 GN=ARB_01353 PE=1 SV=1
3.11e-182	1	591	6	558	Beta-hexosaminidase OS=Candida albicans OX=5476 GN=HEX1 PE=1 SV=1

SignalP and Lipop Annotations help

This protein is predicted as SP

Other	SP_Sec_SPI	CS Position
0.000590	0.999389	CS pos: 19-20. Pr: 0.9701

TMHMM Annotations help

There is no transmembrane helices in EEP81709.1.

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