Glycoside Hydrolase Family 16 / Subf 9

Activities in Sub Family	No known activity in this subfamily. Activities in Family: [retaining] β-1,3-glucanosyltransglucosidase (EC 2.4.1.-); β-transglycosidase (EC 2.4.1.-); Chitin β-1,3/1,6-glucanosyltransferase (EC 2.4.1.-); Xyloglucan:xyloglucosyl transferase (EC 2.4.1.207); GlcNAc-α-1,4-Gal-releasing endo-β-galactosidase (EC 3.2.1.-); [retaining] β-1,3-glucanase (EC 3.2.1.-); α-carrageenase (EC 3.2.1.-); β-carrageenase (EC 3.2.1.-); Endo-β-1,4-galactosidase (EC 3.2.1.-); Keratan-sulfate endo-β-1,4-galactosidase / keratanase (EC 3.2.1.103); Xyloglucan-specific endo-β-1,4-glucanase / endo-xyloglucanase (EC 3.2.1.151); [retaining] β-porphyranase (EC 3.2.1.178); Endo-β-1,3-galactanase (EC 3.2.1.181); β-glucosidase (EC 3.2.1.21); β-galactosidase (EC 3.2.1.23); Hyaluronidase / hyaluronoglucosaminidase (EC 3.2.1.35); Endo-β-1,3-glucanase / laminarinase (EC 3.2.1.39); Endo-β-1,3(4)-glucanase / lichenase-laminarinase (EC 3.2.1.6); Lichenase / endo-β-1,3-1,4-glucanase (EC 3.2.1.73); β-agarase (EC 3.2.1.81); κ-carrageenase (EC 3.2.1.83);
Mechanism	Retaining e
Clan	GH-B
3D Structure Status	β-jelly roll
Catalytic Nucleophile/Base	Glu (experimental)
Catalytic Proton Donor	Glu (experimental)
Note	Many members have been assigned to subfamilies as described by Viborg et al. (2019) J Biol Chem. 2019 Sep 9 (PMID: 31501245).
External resources	CAZypedia; HOMSTRAD; PRINTS; PROSITE; XTH-World;
Commercial Enzyme Provider(s)	MEGAZYME; NZYTech; PROZOMIX;
Statistics	GenBank accession (887); Uniprot accession (0); PDB accession (7); 3D entries (7); cryst (0)