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2NQJ

Crystal structure of Escherichia coli endonuclease IV (Endo IV) E261Q mutant bound to 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
B0003677molecular_functionDNA binding
B0003906molecular_functionDNA-(apurinic or apyrimidinic site) endonuclease activity
B0004518molecular_functionnuclease activity
B0004519molecular_functionendonuclease activity
B0005829cellular_componentcytosol
B0006281biological_processDNA repair
B0006284biological_processbase-excision repair
B0006974biological_processDNA damage response
B0008081molecular_functionphosphoric diester hydrolase activity
B0008270molecular_functionzinc ion binding
B0008296molecular_function3'-5'-DNA exonuclease activity
B0008833molecular_functiondeoxyribonuclease IV (phage-T4-induced) activity
B0016787molecular_functionhydrolase activity
B0016791molecular_functionphosphatase activity
B0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues5
DetailsBINDING SITE FOR RESIDUE ZN A 351
ChainResidue
AHIS69
AHIS109
AGLU145
AZN352
C3DR307

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE ZN A 352
ChainResidue
AGLN261
AZN351
C3DR307
AGLU145
AASP179
AHIS182
AHIS216

site_idAC3
Number of Residues5
DetailsBINDING SITE FOR RESIDUE ZN A 353
ChainResidue
AHIS182
AASP229
AHIS231
CDC306
C3DR307

site_idAC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN B 403
ChainResidue
BHIS182
BASP229
BHIS231
CDG315

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 Residues18
DetailsBINDING:
ChainResidueDetails
AHIS69
BHIS69
BHIS109
BGLU145
BASP179
BHIS182
BHIS216
BASP229
BHIS231
BGLN261
AHIS109
AGLU145
AASP179
AHIS182
AHIS216
AASP229
AHIS231
AGLN261

Catalytic Information from CSA
site_idCSA1
Number of Residues1
DetailsAnnotated By Reference To The Literature 1qum
ChainResidueDetails
AGLN261

site_idCSA2
Number of Residues1
DetailsAnnotated By Reference To The Literature 1qum
ChainResidueDetails
BGLN261

site_idMCSA1
Number of Residues11
DetailsM-CSA 11
ChainResidueDetails

site_idMCSA2
Number of Residues11
DetailsM-CSA 11
ChainResidueDetails

237735

PDB entries from 2025-06-18

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