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1QUM

CRYSTAL STRUCTURE OF ESCHERICHIA COLI ENDONUCLEASE IV IN COMPLEX WITH DAMAGED DNA

Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0003906molecular_functionDNA-(apurinic or apyrimidinic site) endonuclease activity
A0004518molecular_functionnuclease activity
A0004519molecular_functionendonuclease activity
A0005829cellular_componentcytosol
A0006281biological_processDNA repair
A0006284biological_processbase-excision repair
A0006974biological_processDNA damage response
A0008081molecular_functionphosphoric diester hydrolase activity
A0008270molecular_functionzinc ion binding
A0008296molecular_function3'-5'-DNA exonuclease activity
A0008833molecular_functiondeoxyribonuclease IV (phage-T4-induced) activity
A0016787molecular_functionhydrolase activity
A0016791molecular_functionphosphatase activity
A0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 301
ChainResidue
AHIS69
AHIS109
AGLU145
C3DR907

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE ZN A 302
ChainResidue
AHIS182
AASP229
AHIS231
BDC906
C3DR907

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE ZN A 303
ChainResidue
AGLU145
AASP179
AHIS182
AHIS216
AGLU261
C3DR907

Functional Information from PROSITE/UniProt
site_idPS00729
Number of Residues9
DetailsAP_NUCLEASE_F2_1 AP endonucleases family 2 signature 1. HDsYLINLG
ChainResidueDetails
AHIS69-GLY77

site_idPS00730
Number of Residues8
DetailsAP_NUCLEASE_F2_2 AP endonucleases family 2 signature 2. GVCIDTCH
ChainResidueDetails
AGLY175-HIS182

site_idPS00731
Number of Residues17
DetailsAP_NUCLEASE_F2_3 AP endonucleases family 2 signature 3. MHlNDAkstfGsrvDrH
ChainResidueDetails
AMET215-HIS231

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues9
DetailsBinding site: {}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues1
Detailsa catalytic site defined by CSA, PubMed 10458614
ChainResidueDetails
AGLU261

site_idMCSA1
Number of Residues11
DetailsM-CSA 11
ChainResidueDetails

240971

PDB entries from 2025-08-27

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