Mechanism	Retaining a
Clan	GH-T
3D Structure Status	( β / α ) 7 barrel
Catalytic Nucleophile/Base	Glu
Catalytic Proton Donor	Asp
Note	Subfamilies established in (Polacek et al., 2025) [PMID:40187459]
External resources	CAZypedia;
Statistics	GenBank accession (725); Uniprot accession (8); PDB accession (3); 3D entries (1); cryst (0)

Archaea
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)	Subf
4-α-glucanotransferase (Jgt)	2.4.1.25	Thermococcus litoralis	BAA22063.1	O32462	1K1W[A] α-D-Glcp 2.80 1K1X[A,B] 2.40 1K1Y[A,B] α-D-Glcp-(1-4)-α-D-Glcp <non_carb>-(1-4)-α-D-6-deoxy-Glcp4N-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp 2.40	1
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