Glycoside Hydrolase Family 31 / Subf 7

Activities in Sub Familyα-3-isomaltosyltransferase / cycloalternan-forming enzyme (EC 2.4.1.387);
[retaining] cycloalternan-specific α-1,3-glucosidase / α-1,3-isomaltosidase (EC 3.2.1.204);
Mechanism Retaining a
ClanGH-D
3D Structure Status( β / α ) 8 barrel
Catalytic Nucleophile/BaseAsp
Catalytic Proton DonorAsp
NoteSubfamily classification initiated by Arumapperuma et al. 2023 [PMID:36806678]
External resourcesCAZypedia; PROSITE;
Commercial Enzyme Provider(s)MEGAZYME;
Statistics GenBank accession (478); Uniprot accession (9); PDB accession (13); 3D entries (3); cryst (0)
Bacteria
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3DSubf
 3-α-isomaltosyltransferase (CtsY;IMT) 2.4.1.387 pubmed
Arthrobacter globiformis A19 BAD34979.1 Q6BD67   7
 cycloalternan-specific α-1,3-glucosidase / α-1,3-isomaltosidase (Kfla_1895) 3.2.1.204 pubmed
Kribbella flavida DSM 17836 ADB30989.1 D2PPM7 5X3I[A,B]
5X3J[A,B]
5X3K[A,B]
7
 3-α-isomaltosyltransferase (IMT;Kfla_4052) 2.4.1.387 pubmed
Kribbella flavida DSM 17836 ADB33101.1 D2PSG3   7
 cycloalternan-degrading enzyme (Lmo0182) 3.2.1.204 pubmed
Listeria monocytogenes EGD-e CAC98397.1
NP_463713.1
Q8YAE8   7
 cycloalternan-forming enzyme / 3-α-isomaltosyltransferase (CAFE;LmCAFE;Lmo2446) 2.4.1.387 pubmed
Listeria monocytogenes EGD-e CAD00524.1
NP_465969.1
Q8Y4J2 4KMQ[A]
4KWU[A]
5F7U[A]
5HPO[A]
5HXM[A]
5I0D[A,B]
7
 isomaltosyltransferase (CtsW) 2.4.1.387 pubmed
Sporosarcina globispora C11 BAB88401.1 Q8RQV2   7
 3-α-isomaltosyltransferase (CtsY) 2.4.1.387 pubmed
Sporosarcina globispora C11 BAB88403.1
ABJ31058.1
Q8RQV0   7
 3-α-isomaltosyltransferase (CtsY;IMT) 2.4.1.387 pubmed
Sporosarcina globispora N75 BAC54957.1
ABJ31059.1
Q84IQ3   7
 cycloalternan-specific α-1,3-glucosidase (CADE;TpCADE;TpLmo0182;CQ11_05330) 3.2.1.204 pubmed
Trueperella pyogenes TP6375 AHU89502.1 A0A806M5Y7 5F7S[A,B]
5I0E[B]
5I0F[B]
5I0G[B]
7
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