CAZyme Information: MGYG000000044_01355

Basic Information

• Species: Parabacteroides merdae
• Lineage: Bacteria; Bacteroidota; Bacteroidia; Bacteroidales; Tannerellaceae; Parabacteroides; Parabacteroides merdae
• CAZyme ID: MGYG000000044_01355
• CAZy Family: GH20
• CAZyme Description: Beta-hexosaminidase

CAZyme Property

Protein Length	CGC	Molecular Weight	Isoelectric Point
524	MGYG000000044_2|CGC12	59759.37	6.781

Genome Property

Genome Assembly ID	Genome Size	Genome Type	Country	Continent
MGYG000000044	4300426	Isolate	United Kingdom	Europe

• Gene Location: Start: 527679; End: 529253 Strand: -

Full Sequence      

MRKLIYLSTLLLLFVLPMMAQHPLFPTPAKVQNGKGSFVIGKNLQVQGNGGYADKLAAGL
QTELKEAGLQSSPASGTIRLELTNDCKMADEAYTLVVEPNSILLQASSEAGLFYAKEALL
QLSRFGKGNVRACKIQDQPRYGWRGFMLDESRHFFGKEKVKQYLDIMASLRLNVFHWHLT
DEPGWRIEIKRYPKLTTEGAVGNWHDPKAPATFYTQEEIKEIVAYAADRHIMVVPEFDMP
GHATAVCRSYPEISGGGEGKWQHFTFHPCKEETFEFISNVLDEIVALFPSPYIHIGGDEV
HYGNQSWFTDPEIQQFIKDKNLGNETGLEQYFIRRAADIVASKGKTMIGWDEMIDAGVSP
DKAVIMWWRHDRKHQLVKALENGYRVIMTPRRPLYADFVQYGGHKVGRVWGGYNTIEDIY
RFPEPIIHLTRDYEDQVMGLQFSLWTERVADAKRLDYMTFPRLVAVAESAWTPAKSKECS
LFMQKLPYFLRFLGEKGIYYFNPFNPESTPEPSAPDKDDVLKNG

Enzyme Prediction     

No EC number prediction in MGYG000000044_01355.

CAZyme Signature Domains

Family	Start	End	Evalue	family coverage
GH20	136	473	4.8e-113	0.973293768545994

CDD Domains     

Cdd ID	Domain	E-Value	qStart	qEnd	sStart	sEnd	Domain Description
cd06563	GH20_chitobiase-like	1.43e-170	141	486	1	357	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	4.65e-149	141	473	1	345	Glycosyl hydrolase family 20, catalytic domain. This domain has a TIM barrel fold.
cd06568	GH20_SpHex_like	7.27e-101	141	474	1	317	A subgroup of the Glycosyl hydrolase family 20 (GH20) catalytic domain found in proteins similar to the N-acetylhexosaminidase from Streptomyces plicatus (SpHex). SpHex catalyzes the hydrolysis of N-acetyl-beta-hexosaminides. An Asp residue within the active site plays a critical role in substrate-assisted catalysis by orienting the 2-acetamido group and stabilizing the transition state. 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. Proteins belonging to this subgroup lack the C-terminal PKD (polycystic kidney disease I)-like domain found in the chitobiases.
COG3525	Chb	1.40e-93	20	487	132	629	N-acetyl-beta-hexosaminidase [Carbohydrate transport and metabolism].
cd06562	GH20_HexA_HexB-like	3.04e-93	141	489	1	340	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     

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End
QUT50216.1	0.0	1	524	1	524
AUI48789.1	1.43e-256	10	524	22	511
QLK81785.1	2.87e-256	10	524	22	511
QCQ44390.1	2.87e-256	10	524	22	511
QKH85477.1	4.08e-256	10	524	22	511

PDB Hits     

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End	Description
7CBN_A	7.98e-102	19	505	9	515	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]
6EZR_A	3.68e-84	22	504	140	641	Crystalstructure of GH20 Exo beta-N-Acetylglucosaminidase from Vibrio harveyi [Vibrio harveyi],6EZR_B Crystal structure of GH20 Exo beta-N-Acetylglucosaminidase from Vibrio harveyi [Vibrio harveyi],6EZS_A Crystal structure of GH20 Exo beta-N-Acetylglucosaminidase from Vibrio harveyi in complex with N-acetylglucosamine [Vibrio harveyi],6EZS_B Crystal structure of GH20 Exo beta-N-Acetylglucosaminidase from Vibrio harveyi in complex with N-acetylglucosamine [Vibrio harveyi],6K35_A Crystal structure of GH20 exo beta-N-acetylglucosaminidase from Vibrio harveyi in complex with NAG-thiazoline [Vibrio harveyi],6K35_B Crystal structure of GH20 exo beta-N-acetylglucosaminidase from Vibrio harveyi in complex with NAG-thiazoline [Vibrio harveyi]
6EZT_A	5.10e-83	22	504	137	638	Crystalstructure of GH20 Exo beta-N-Acetylglucosaminidase D437A inactive mutant from Vibrio harveyi [Vibrio harveyi],6EZT_B Crystal structure of GH20 Exo beta-N-Acetylglucosaminidase D437A inactive mutant from Vibrio harveyi [Vibrio harveyi]
6Q63_A	1.82e-80	91	513	106	552	BT0459[Bacteroides thetaiotaomicron],6Q63_B BT0459 [Bacteroides thetaiotaomicron],6Q63_C BT0459 [Bacteroides thetaiotaomicron]
3RCN_A	5.34e-80	20	512	6	521	CrystalStructure of Beta-N-Acetylhexosaminidase from Arthrobacter aurescens [Paenarthrobacter aurescens TC1]

Swiss-Prot Hits     

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End	Description
B2UQG6	2.34e-100	17	505	25	534	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
P49008	8.11e-88	53	503	74	535	Beta-hexosaminidase OS=Porphyromonas gingivalis (strain ATCC BAA-308 / W83) OX=242619 GN=nahA PE=3 SV=2
P96155	1.55e-77	24	469	141	603	Beta-hexosaminidase OS=Vibrio furnissii OX=29494 GN=exoI PE=1 SV=1
Q7WUL4	5.93e-64	74	498	65	475	Beta-N-acetylhexosaminidase OS=Cellulomonas fimi OX=1708 GN=hex20 PE=1 SV=1
Q04786	2.43e-55	24	478	200	724	Beta-hexosaminidase OS=Vibrio vulnificus OX=672 GN=hex PE=3 SV=1

SignalP and Lipop Annotations

This protein is predicted as SP

Other	SP_Sec_SPI	LIPO_Sec_SPII	TAT_Tat_SPI	TATLIP_Sec_SPII	PILIN_Sec_SPIII
0.000262	0.999094	0.000171	0.000153	0.000149	0.000141

TMHMM  Annotations     

There is no transmembrane helices in MGYG000000044_01355.