Mechanism	Retaining a
Clan	GH-D
3D Structure Status	( β / α ) 8 barrel
Catalytic Nucleophile/Base	Asp
Catalytic Proton Donor	Asp
Note	Subfamily classification initiated by Arumapperuma et al. 2023 [PMID:36806678]
External resources	CAZypedia; PROSITE;
Statistics	GenBank accession (194); Uniprot accession (4); PDB accession (9); 3D entries (4); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)	Subf
EUBREC_2592		Agathobacter rectalis ATCC 33656	ACR76323.1		6PNR[A,C] 1.90	13
sulfoquinovosidase (AtSQase; SmoI; SY94_3281)	3.2.1.199	Agrobacterium tumefaciens F4	KJX86999.1	A0A083ZKV2 A9CEZ0	5OHS[A,B,C,D,E,F,G,H] α-D-Glcp6SH-(1-1)-<non_carb> 1.97 5OHY[A,B,C,D] 1.77 7OFX[A,B,C,D] α-D-Glcp6SH-(1-1)-<non_carb> 2.15	13
α-sulfoquinovosidase (SQase; EcSQase; YihQ; b3878)	3.2.1.199	Escherichia coli str. K-12 substr. MG1655	AAC76875.1 AAB03011.1 AIZ93343.1 ALI38454.1 AMC96746.1 AUG18567.1 AVI54027.1 AYG21326.1 NP_418314.1	P32138	5AED[A,B] 1.91 5AEE[A,B] α-D-Glcp6SH-(1-1)-<non_carb> 1.85 5AEG[A,B] α-L-Idop5F-(1-4)-ASP 1.85 5OHT[A,B] 1.87	13
α-sulfoquinovosidase (BmSQase; BMQ_3646)	3.2.1.199	Priestia megaterium QM B1551	ADE70659.1 WP_013058333.1	D5E1T0	8R56[A,B,C,D] 2.45	13
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