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2IBS

Crystal structure of the adenine-specific DNA methyltransferase M.TaqI complexed with the cofactor analog AETA and a 10 bp DNA containing 2-aminopurine at the target position

Functional Information from GO Data
ChainGOidnamespacecontents
A0003676molecular_functionnucleic acid binding
A0003677molecular_functionDNA binding
A0006304biological_processDNA modification
A0008168molecular_functionmethyltransferase activity
A0009007molecular_functionsite-specific DNA-methyltransferase (adenine-specific) activity
A0009307biological_processDNA restriction-modification system
A0016740molecular_functiontransferase activity
A0032259biological_processmethylation
D0003676molecular_functionnucleic acid binding
D0003677molecular_functionDNA binding
D0006304biological_processDNA modification
D0008168molecular_functionmethyltransferase activity
D0009007molecular_functionsite-specific DNA-methyltransferase (adenine-specific) activity
D0009307biological_processDNA restriction-modification system
D0016740molecular_functiontransferase activity
D0032259biological_processmethylation
Functional Information from PDB Data
site_idAC1
Number of Residues14
DetailsBINDING SITE FOR RESIDUE NEA A 1001
ChainResidue
AVAL21
AHOH1088
AHOH1114
AHOH1115
AHOH1135
AHOH1246
AALA47
AGLU71
AILE72
AALA88
AASP89
APHE90
AASN105
APRO107

site_idAC2
Number of Residues15
DetailsBINDING SITE FOR RESIDUE NEA D 1002
ChainResidue
DVAL21
DALA47
DGLU71
DILE72
DASP73
DALA88
DASP89
DPHE90
DASN105
DPRO107
DPHE146
DHOH1074
DHOH1170
DHOH1186
DHOH1198

Functional Information from PROSITE/UniProt
site_idPS00092
Number of Residues7
DetailsN6_MTASE N-6 Adenine-specific DNA methylases signature. ILGNPPY
ChainResidueDetails
AILE102-TYR108

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues10
DetailsBINDING: BINDING => ECO:0007744|PDB:2ADM
ChainResidueDetails
ATHR23
DPRO107
AGLU45
AGLU71
AASP89
APRO107
DTHR23
DGLU45
DGLU71
DASP89

site_idSWS_FT_FI2
Number of Residues4
DetailsSITE: Important for catalytic activity => ECO:0007744|PDB:2ADM
ChainResidueDetails
AASN105
ATYR108
DASN105
DTYR108

site_idSWS_FT_FI3
Number of Residues2
DetailsSITE: Important for catalytic activity; via amide nitrogen => ECO:0007744|PDB:2ADM
ChainResidueDetails
APRO106
DPRO106

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 2adm
ChainResidueDetails
APRO106
AASN105
ATYR108

site_idCSA2
Number of Residues3
DetailsAnnotated By Reference To The Literature 2adm
ChainResidueDetails
DPRO106
DASN105
DTYR108

site_idMCSA1
Number of Residues4
DetailsM-CSA 46
ChainResidueDetails

site_idMCSA2
Number of Residues4
DetailsM-CSA 46
ChainResidueDetails

237992

PDB entries from 2025-06-25

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