Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8034512 3000118 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyDNA methylase specificity domain 8034513 3001742 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8034512 3000118 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyDNA methylase specificity domain 8034513 3001742 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ATaqI_Ce2admA1 A: a+b complex topologyX: DNA methylase specificity domain (From Topology)H: DNA methylase specificity domain (From Topology)T: DNA methylase specificity domainF: TaqI_CECOD (1.6)
AN6_Mtasee2admA2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: N6_MtaseECOD (1.6)
BTaqI_Ce2admB1 A: a+b complex topologyX: DNA methylase specificity domain (From Topology)H: DNA methylase specificity domain (From Topology)T: DNA methylase specificity domainF: TaqI_CECOD (1.6)
BN6_Mtasee2admB2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: N6_MtaseECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF12950TaqI-like C-terminal specificity domain (TaqI_C)TaqI-like C-terminal specificity domainThis domain is found at the C-terminus of the TaqI protein and is involved in DNA-binding and substrate recognition.Domain
A, B
PF07669Eco57I restriction-modification methylase (Eco57I)Eco57I restriction-modification methylaseHomologues of the Escherichia coli Eco57I restriction-modification methylase are found in several phylogenetically diverse bacteria. The structure of TaqI has been solved [1].Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
ADENINE-N6-DNA-METHYLTRANSFERASE TAQI -

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
site-specific DNA-methyltransferase (adenine-specific)  M-CSA #46

N-6 adenine-specific DNA-methyltransferases catalyse the transfer of a methyl group from S-adenosyl-L-methionine to either the exocyclic N-6 of an adenine or to N-4 of a cytosine contained in a specific DNA recognition sequence. Methylation protects the DNA from restriction from host endonucleases.

Defined by 4 residues: ASN:A-105PRO:A-106TYR:A-108PHE:A-196
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