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4FS1

Base pairing mechanism of N2,3-ethenoguanine with dTTP by human polymerase iota

Functional Information from GO Data
ChainGOidnamespacecontents
A0003684molecular_functiondamaged DNA binding
A0003887molecular_functionDNA-directed DNA polymerase activity
A0006281biological_processDNA repair
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE MG A 501
ChainResidue
AASP34
ALEU35
AASP126
ATTP505

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG A 502
ChainResidue
ALYS237
AILE239
AILE242
AHOH613
BDC12

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 503
ChainResidue
ASER106
AARG122
AGLY124
APHE125
AGLU127
AHOH634

site_idAC4
Number of Residues6
DetailsBINDING SITE FOR RESIDUE NA A 504
ChainResidue
ASER154
AGLY155
AHIS156
AGLN218
ATHR219
AVAL220

site_idAC5
Number of Residues17
DetailsBINDING SITE FOR RESIDUE TTP A 505
ChainResidue
AASP34
ALEU35
AASP36
ACYS37
APHE38
ATYR39
AVAL64
ATHR65
ATYR68
AARG71
ALYS77
AASP126
ALYS214
AMG501
BDOC13
CEFG840
CDG841

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues213
DetailsDomain: {"description":"UmuC","evidences":[{"source":"PROSITE-ProRule","id":"PRU00216","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues65
DetailsRegion: {"description":"DNA-binding","evidences":[{"source":"PubMed","id":"15254543","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"27555320","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1T3N","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5KT2","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5KT4","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5KT6","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PROSITE-ProRule","id":"PRU00216","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues3
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"27555320","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"5KT5","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"15254543","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1T3N","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

239803

PDB entries from 2025-08-06

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