ID H2VDT9_TAKRU Unreviewed; 456 AA.
AC H2VDT9;
DT 21-MAR-2012, integrated into UniProtKB/TrEMBL.
DT 17-JUN-2020, sequence version 3.
DT 27-MAR-2024, entry version 54.
DE RecName: Full=Beta-hexosaminidase subunit beta {ECO:0000256|ARBA:ARBA00040637};
DE EC=3.2.1.52 {ECO:0000256|ARBA:ARBA00012663};
DE AltName: Full=Beta-N-acetylhexosaminidase subunit beta {ECO:0000256|ARBA:ARBA00042342};
DE AltName: Full=N-acetyl-beta-glucosaminidase subunit beta {ECO:0000256|ARBA:ARBA00042832};
GN Name=hexb {ECO:0000313|Ensembl:ENSTRUP00000047384.3};
OS Takifugu rubripes (Japanese pufferfish) (Fugu rubripes).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC Eupercaria; Tetraodontiformes; Tetradontoidea; Tetraodontidae; Takifugu.
OX NCBI_TaxID=31033 {ECO:0000313|Ensembl:ENSTRUP00000047384.3, ECO:0000313|Proteomes:UP000005226};
RN [1] {ECO:0000313|Ensembl:ENSTRUP00000047384.3, ECO:0000313|Proteomes:UP000005226}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=21551351;
RA Kai W., Kikuchi K., Tohari S., Chew A.K., Tay A., Fujiwara A., Hosoya S.,
RA Suetake H., Naruse K., Brenner S., Suzuki Y., Venkatesh B.;
RT "Integration of the genetic map and genome assembly of fugu facilitates
RT insights into distinct features of genome evolution in teleosts and
RT mammals.";
RL Genome Biol. Evol. 3:424-442(2011).
RN [2] {ECO:0000313|Ensembl:ENSTRUP00000047384.3}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (NOV-2023) to UniProtKB.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N-acetyl-beta-D-6-sulfogalactosaminyl-(1->4)-alpha-L-
CC iduronyl-(1->3)-N-acetyl-D-6-sulfogalactosamine = alpha-L-iduronyl-
CC (1->3)-N-acetyl-D-6-sulfogalactosamine + N-acetyl-D-6-
CC sulfogalactosamine; Xref=Rhea:RHEA:64384, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:152567, ChEBI:CHEBI:152568, ChEBI:CHEBI:153064;
CC Evidence={ECO:0000256|ARBA:ARBA00023541};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:64385;
CC Evidence={ECO:0000256|ARBA:ARBA00023541};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N-acetyl-beta-D-galactosaminyl-(1->4)-beta-D-3-
CC sulfogalactosyl-(1->4)-beta-D-glucosyl-(1<->1')-ceramide = a beta-D-
CC 3-sulfogalactosyl-(1->4)-beta-D-glucosyl-(1<->1')-ceramide + N-
CC acetyl-beta-D-galactosamine; Xref=Rhea:RHEA:48276, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:28497, ChEBI:CHEBI:90163, ChEBI:CHEBI:90164;
CC Evidence={ECO:0000256|ARBA:ARBA00023953};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:48277;
CC Evidence={ECO:0000256|ARBA:ARBA00023953};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Hydrolysis of terminal non-reducing N-acetyl-D-hexosamine
CC residues in N-acetyl-beta-D-hexosaminides.; EC=3.2.1.52;
CC Evidence={ECO:0000256|ARBA:ARBA00001231};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a ganglioside GM2 (d18:1(4E)) + H2O = a ganglioside GM3
CC (d18:1(4E)) + N-acetyl-beta-D-galactosamine; Xref=Rhea:RHEA:47940,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:28497, ChEBI:CHEBI:60065,
CC ChEBI:CHEBI:71502; Evidence={ECO:0000256|ARBA:ARBA00043767};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47941;
CC Evidence={ECO:0000256|ARBA:ARBA00043767};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a ganglioside GM2 + H2O = a ganglioside GM3 + N-acetyl-beta-D-
CC galactosamine; Xref=Rhea:RHEA:47968, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:28497, ChEBI:CHEBI:79210, ChEBI:CHEBI:79218;
CC Evidence={ECO:0000256|ARBA:ARBA00043827};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:47969;
CC Evidence={ECO:0000256|ARBA:ARBA00043827};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=beta-D-GalNAc-(1->4)-alpha-L-IdoA-(1->3)-beta-D-GalNAc-4-
CC sulfate-(1->4)-alpha-L-IdoA-(1->3)-D-GalNAc-4-sulfate + H2O = alpha-
CC L-IdoA-(1->3)-beta-D-GalNAc-4-sulfate-(1->4)-alpha-L-IdoA-(1->3)-D-
CC GalNAc-4-sulfate + N-acetyl-D-galactosamine; Xref=Rhea:RHEA:64372,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:28037, ChEBI:CHEBI:152565,
CC ChEBI:CHEBI:152566; Evidence={ECO:0000256|ARBA:ARBA00023505};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:64373;
CC Evidence={ECO:0000256|ARBA:ARBA00023505};
CC -!- SUBCELLULAR LOCATION: Cytoplasmic vesicle, secretory vesicle, Cortical
CC granule {ECO:0000256|ARBA:ARBA00037865}. Lysosome
CC {ECO:0000256|ARBA:ARBA00004371}.
CC -!- SIMILARITY: Belongs to the glycosyl hydrolase 20 family.
CC {ECO:0000256|ARBA:ARBA00006285}.
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DR AlphaFoldDB; H2VDT9; -.
DR Ensembl; ENSTRUT00000047544.3; ENSTRUP00000047384.3; ENSTRUG00000018510.3.
DR GeneTree; ENSGT00390000008107; -.
DR HOGENOM; CLU_007082_0_3_1; -.
DR Proteomes; UP000005226; Chromosome 6.
DR GO; GO:0060473; C:cortical granule; IEA:UniProtKB-SubCell.
DR GO; GO:0005764; C:lysosome; IEA:UniProtKB-SubCell.
DR GO; GO:0004563; F:beta-N-acetylhexosaminidase activity; IEA:UniProtKB-EC.
DR GO; GO:0102148; F:N-acetyl-beta-D-galactosaminidase activity; IEA:UniProtKB-EC.
DR GO; GO:1901135; P:carbohydrate derivative metabolic process; IEA:UniProt.
DR GO; GO:0005975; P:carbohydrate metabolic process; IEA:InterPro.
DR Gene3D; 3.30.379.10; Chitobiase/beta-hexosaminidase domain 2-like; 1.
DR Gene3D; 3.20.20.80; Glycosidases; 1.
DR InterPro; IPR025705; Beta_hexosaminidase_sua/sub.
DR InterPro; IPR015883; Glyco_hydro_20_cat.
DR InterPro; IPR017853; Glycoside_hydrolase_SF.
DR InterPro; IPR029018; Hex-like_dom2.
DR PANTHER; PTHR22600; BETA-HEXOSAMINIDASE; 1.
DR PANTHER; PTHR22600:SF38; BETA-HEXOSAMINIDASE SUBUNIT BETA; 1.
DR Pfam; PF00728; Glyco_hydro_20; 1.
DR PIRSF; PIRSF001093; B-hxosamndse_ab_euk; 1.
DR PRINTS; PR00738; GLHYDRLASE20.
DR SUPFAM; SSF51445; (Trans)glycosidases; 1.
DR SUPFAM; SSF55545; beta-N-acetylhexosaminidase-like domain; 1.
PE 3: Inferred from homology;
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801};
KW Reference proteome {ECO:0000313|Proteomes:UP000005226};
KW Signal {ECO:0000256|SAM:SignalP}.
FT SIGNAL 1..20
FT /evidence="ECO:0000256|SAM:SignalP"
FT CHAIN 21..456
FT /note="Beta-hexosaminidase subunit beta"
FT /evidence="ECO:0000256|SAM:SignalP"
FT /id="PRO_5025611167"
FT DOMAIN 179..443
FT /note="Glycoside hydrolase family 20 catalytic"
FT /evidence="ECO:0000259|Pfam:PF00728"
FT ACT_SITE 335
FT /note="Proton donor"
FT /evidence="ECO:0000256|PIRSR:PIRSR001093-1"
SQ SEQUENCE 456 AA; 51710 MW; DDD0E4E482749C8E CRC64;
MNVSTNILAL LFLALGSCQG LRRHHVDGIV EEEIEFVAQP SKFGSLWPLP QKVQISQVSF
KLTGFSFNIV DAKQSSAGPS CALLQDAYRR YYEYMFGNAK RSGKNKSRRA GPTDLTELQV
WITSADSDCD AYPSVKSDES CEWPLSGIIR LETFSQLIYE DDYGAKSINA TSISDFPRFP
HRGILLDTSR HFLPVKVILA NLETMAMNKI NVFHWHIVDE PSFPYMSKTF PQLSQQGAFH
PYTHVYTPAD VKMVIEFARL RGIRVVAEFD TPGHTQSWGK GQKDLLTPCY SGSKLSGSFG
PVNPILNTTY TFMTQFFKEV STVFPDGYVH LGGDEVDFNC WKSNPNITKF MDQQGFGRDY
SKLESFYIQR LLDIVATTNK GYMVWQEVFD NGVKLKPDTV VHVWIGGRYN DEMSKVTAAG
YPTLLSAPWY LDYISYAQDW QNYYKVEPLS FNGNAF
//
