CAZyme Information: MGYG000002452_01976

Basic Information

• Species: Akkermansia muciniphila_C
• Lineage: Bacteria; Verrucomicrobiota; Verrucomicrobiae; Verrucomicrobiales; Akkermansiaceae; Akkermansia; Akkermansia muciniphila_C
• CAZyme ID: MGYG000002452_01976
• CAZy Family: GH20
• CAZyme Description: Beta-hexosaminidase

CAZyme Property

Protein Length	CGC	Molecular Weight	Isoelectric Point
492		55746.23	8.8471

Genome Property

Genome Assembly ID	Genome Size	Genome Type	Country	Continent
MGYG000002452	2902150	Isolate	China	Asia

• Gene Location: Start: 5279; End: 6757 Strand: +

Full Sequence      

MLKLLNILACAALSVHLAAAQQAAYSVIPEPAKTNLTQGTARTLKLLSDKASPALGKDAY
QLTVTPQGVHLSSGGKEGRIYGLVTLQQLQDQLAAHPEGIPCGVIKDKPRYPWRGMMVDP
ARHFIPMKDLKKFVDMMAYYKFNKLQLHLTDDQGWRLPVPGYPKLKSISSKRAESFGNGT
PHEGMYTRQELKDLVAYCAARGIEVIPEIDMPGHNQALAAAYPEFFCFPDHNTKVSTTGG
VGLYLVCPHKPEIWKFYAAVFDELRDIFPSTMVHLGGDEAPLEKTWEKCPLSVKYRQQKG
MKDVHEELKEFEAKMASMLAARGKKPIFWYEKPWAQASVYRKGDTVFTWRMGLTPSTITE
TKKQGLPLIIAAGEHCYLDYPQIPGQDNRGWMPTTTLEQSYKLDPAYGRPEQETDHIIGV
QATMWAEQLSTLNHLLYRTYPRACAIAEAGWSPMNVRSWENFQRKLADQRQFVLKRFNYD
MERTKENEPPFK

Enzyme Prediction     

No EC number prediction in MGYG000002452_01976.

CAZyme Signature Domains

Family	Start	End	Evalue	family coverage
GH20	106	453	2.5e-103	0.973293768545994

CDD Domains     

Cdd ID	Domain	E-Value	qStart	qEnd	sStart	sEnd	Domain Description
cd06563	GH20_chitobiase-like	2.19e-156	111	466	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	4.54e-128	111	453	1	345	Glycosyl hydrolase family 20, catalytic domain. This domain has a TIM barrel fold.
cd06568	GH20_SpHex_like	6.76e-95	111	466	1	329	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	6.99e-90	50	469	198	631	N-acetyl-beta-hexosaminidase [Carbohydrate transport and metabolism].
cd06562	GH20_HexA_HexB-like	1.10e-75	111	476	1	347	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
QHV63814.1	0.0	1	492	12	504
QUY60134.1	0.0	1	492	12	504
QWP48225.1	0.0	1	492	12	504
QHV76184.1	0.0	1	492	12	504
QWP67809.1	0.0	1	492	12	504

PDB Hits     

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End	Description
6JE8_A	2.27e-252	23	492	2	467	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]
7CBN_A	9.30e-90	54	473	74	503	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]
7DUP_A	1.08e-72	33	479	56	520	ChainA, Beta-N-acetylhexosaminidase [Bacteroides thetaiotaomicron],7DVA_A Chain A, Beta-N-acetylhexosaminidase [Bacteroides thetaiotaomicron],7DVA_B Chain B, Beta-N-acetylhexosaminidase [Bacteroides thetaiotaomicron]
7DVB_A	5.86e-72	33	479	56	520	ChainA, Beta-N-acetylhexosaminidase [Bacteroides thetaiotaomicron],7DVB_B Chain B, Beta-N-acetylhexosaminidase [Bacteroides thetaiotaomicron],7DVB_C Chain C, Beta-N-acetylhexosaminidase [Bacteroides thetaiotaomicron],7DVB_D Chain D, Beta-N-acetylhexosaminidase [Bacteroides thetaiotaomicron]
6Q63_A	8.38e-69	37	466	88	522	BT0459[Bacteroides thetaiotaomicron],6Q63_B BT0459 [Bacteroides thetaiotaomicron],6Q63_C BT0459 [Bacteroides thetaiotaomicron]

Swiss-Prot Hits     

Hit ID	E-Value	Query Start	Query End	Hit Start	Hit End	Description
B2UP57	3.00e-251	23	492	23	488	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
B2UQG6	6.81e-89	54	473	93	522	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	2.50e-72	49	466	103	518	Beta-hexosaminidase OS=Porphyromonas gingivalis (strain ATCC BAA-308 / W83) OX=242619 GN=nahA PE=3 SV=2
P96155	7.87e-65	50	450	200	604	Beta-hexosaminidase OS=Vibrio furnissii OX=29494 GN=exoI PE=1 SV=1
Q7WUL4	6.22e-60	31	472	55	469	Beta-N-acetylhexosaminidase OS=Cellulomonas fimi OX=1708 GN=hex20 PE=1 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
0.000245	0.999006	0.000261	0.000159	0.000148	0.000142

TMHMM  Annotations     

There is no transmembrane helices in MGYG000002452_01976.