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2ISI

Crystal structure of Ape1 from Homo sapiens in a new crystal form complexed with a ligand

Functional Information from GO Data
ChainGOidnamespacecontents
A0000723biological_processtelomere maintenance
A0000781cellular_componentchromosome, telomeric region
A0003677molecular_functionDNA binding
A0003684molecular_functiondamaged DNA binding
A0003691molecular_functiondouble-stranded telomeric DNA binding
A0003713molecular_functiontranscription coactivator activity
A0003714molecular_functiontranscription corepressor activity
A0003723molecular_functionRNA binding
A0003824molecular_functioncatalytic activity
A0003906molecular_functionDNA-(apurinic or apyrimidinic site) endonuclease activity
A0004518molecular_functionnuclease activity
A0004519molecular_functionendonuclease activity
A0004520molecular_functionDNA endonuclease activity
A0004523molecular_functionRNA-DNA hybrid ribonuclease activity
A0004527molecular_functionexonuclease activity
A0004528molecular_functionphosphodiesterase I activity
A0004844molecular_functionuracil DNA N-glycosylase activity
A0005515molecular_functionprotein binding
A0005634cellular_componentnucleus
A0005654cellular_componentnucleoplasm
A0005730cellular_componentnucleolus
A0005737cellular_componentcytoplasm
A0005739cellular_componentmitochondrion
A0005783cellular_componentendoplasmic reticulum
A0005813cellular_componentcentrosome
A0005840cellular_componentribosome
A0006281biological_processDNA repair
A0006284biological_processbase-excision repair
A0006287biological_processbase-excision repair, gap-filling
A0006308biological_processDNA catabolic process
A0006310biological_processDNA recombination
A0006974biological_processDNA damage response
A0008081molecular_functionphosphoric diester hydrolase activity
A0008296molecular_function3'-5'-DNA exonuclease activity
A0008309molecular_functiondouble-stranded DNA exodeoxyribonuclease activity
A0008311molecular_functiondouble-stranded DNA 3'-5' DNA exonuclease activity
A0008408molecular_function3'-5' exonuclease activity
A0016491molecular_functionoxidoreductase activity
A0016607cellular_componentnuclear speck
A0016787molecular_functionhydrolase activity
A0031490molecular_functionchromatin DNA binding
A0033892molecular_functiondeoxyribonuclease (pyrimidine dimer) activity
A0042981biological_processregulation of apoptotic process
A0043488biological_processregulation of mRNA stability
A0044029biological_processpositive regulation of gene expression via chromosomal CpG island demethylation
A0045454biological_processcell redox homeostasis
A0045892biological_processnegative regulation of DNA-templated transcription
A0045944biological_processpositive regulation of transcription by RNA polymerase II
A0046872molecular_functionmetal ion binding
A0048471cellular_componentperinuclear region of cytoplasm
A0052720molecular_functionclass II DNA-(apurinic or apyrimidinic site) endonuclease activity
A0090580molecular_functionphosphodiesterase activity, acting on 3'-phosphoglycolate-terminated DNA strands
A0097698biological_processtelomere maintenance via base-excision repair
A0140431molecular_functionDNA-(abasic site) binding
B0000723biological_processtelomere maintenance
B0000781cellular_componentchromosome, telomeric region
B0003677molecular_functionDNA binding
B0003684molecular_functiondamaged DNA binding
B0003691molecular_functiondouble-stranded telomeric DNA binding
B0003713molecular_functiontranscription coactivator activity
B0003714molecular_functiontranscription corepressor activity
B0003723molecular_functionRNA binding
B0003824molecular_functioncatalytic activity
B0003906molecular_functionDNA-(apurinic or apyrimidinic site) endonuclease activity
B0004518molecular_functionnuclease activity
B0004519molecular_functionendonuclease activity
B0004520molecular_functionDNA endonuclease activity
B0004523molecular_functionRNA-DNA hybrid ribonuclease activity
B0004527molecular_functionexonuclease activity
B0004528molecular_functionphosphodiesterase I activity
B0004844molecular_functionuracil DNA N-glycosylase activity
B0005515molecular_functionprotein binding
B0005634cellular_componentnucleus
B0005654cellular_componentnucleoplasm
B0005730cellular_componentnucleolus
B0005737cellular_componentcytoplasm
B0005739cellular_componentmitochondrion
B0005783cellular_componentendoplasmic reticulum
B0005813cellular_componentcentrosome
B0005840cellular_componentribosome
B0006281biological_processDNA repair
B0006284biological_processbase-excision repair
B0006287biological_processbase-excision repair, gap-filling
B0006308biological_processDNA catabolic process
B0006310biological_processDNA recombination
B0006974biological_processDNA damage response
B0008081molecular_functionphosphoric diester hydrolase activity
B0008296molecular_function3'-5'-DNA exonuclease activity
B0008309molecular_functiondouble-stranded DNA exodeoxyribonuclease activity
B0008311molecular_functiondouble-stranded DNA 3'-5' DNA exonuclease activity
B0008408molecular_function3'-5' exonuclease activity
B0016491molecular_functionoxidoreductase activity
B0016607cellular_componentnuclear speck
B0016787molecular_functionhydrolase activity
B0031490molecular_functionchromatin DNA binding
B0033892molecular_functiondeoxyribonuclease (pyrimidine dimer) activity
B0042981biological_processregulation of apoptotic process
B0043488biological_processregulation of mRNA stability
B0044029biological_processpositive regulation of gene expression via chromosomal CpG island demethylation
B0045454biological_processcell redox homeostasis
B0045892biological_processnegative regulation of DNA-templated transcription
B0045944biological_processpositive regulation of transcription by RNA polymerase II
B0046872molecular_functionmetal ion binding
B0048471cellular_componentperinuclear region of cytoplasm
B0052720molecular_functionclass II DNA-(apurinic or apyrimidinic site) endonuclease activity
B0090580molecular_functionphosphodiesterase activity, acting on 3'-phosphoglycolate-terminated DNA strands
B0097698biological_processtelomere maintenance via base-excision repair
B0140431molecular_functionDNA-(abasic site) binding
C0000723biological_processtelomere maintenance
C0000781cellular_componentchromosome, telomeric region
C0003677molecular_functionDNA binding
C0003684molecular_functiondamaged DNA binding
C0003691molecular_functiondouble-stranded telomeric DNA binding
C0003713molecular_functiontranscription coactivator activity
C0003714molecular_functiontranscription corepressor activity
C0003723molecular_functionRNA binding
C0003824molecular_functioncatalytic activity
C0003906molecular_functionDNA-(apurinic or apyrimidinic site) endonuclease activity
C0004518molecular_functionnuclease activity
C0004519molecular_functionendonuclease activity
C0004520molecular_functionDNA endonuclease activity
C0004523molecular_functionRNA-DNA hybrid ribonuclease activity
C0004527molecular_functionexonuclease activity
C0004528molecular_functionphosphodiesterase I activity
C0004844molecular_functionuracil DNA N-glycosylase activity
C0005515molecular_functionprotein binding
C0005634cellular_componentnucleus
C0005654cellular_componentnucleoplasm
C0005730cellular_componentnucleolus
C0005737cellular_componentcytoplasm
C0005739cellular_componentmitochondrion
C0005783cellular_componentendoplasmic reticulum
C0005813cellular_componentcentrosome
C0005840cellular_componentribosome
C0006281biological_processDNA repair
C0006284biological_processbase-excision repair
C0006287biological_processbase-excision repair, gap-filling
C0006308biological_processDNA catabolic process
C0006310biological_processDNA recombination
C0006974biological_processDNA damage response
C0008081molecular_functionphosphoric diester hydrolase activity
C0008296molecular_function3'-5'-DNA exonuclease activity
C0008309molecular_functiondouble-stranded DNA exodeoxyribonuclease activity
C0008311molecular_functiondouble-stranded DNA 3'-5' DNA exonuclease activity
C0008408molecular_function3'-5' exonuclease activity
C0016491molecular_functionoxidoreductase activity
C0016607cellular_componentnuclear speck
C0016787molecular_functionhydrolase activity
C0031490molecular_functionchromatin DNA binding
C0033892molecular_functiondeoxyribonuclease (pyrimidine dimer) activity
C0042981biological_processregulation of apoptotic process
C0043488biological_processregulation of mRNA stability
C0044029biological_processpositive regulation of gene expression via chromosomal CpG island demethylation
C0045454biological_processcell redox homeostasis
C0045892biological_processnegative regulation of DNA-templated transcription
C0045944biological_processpositive regulation of transcription by RNA polymerase II
C0046872molecular_functionmetal ion binding
C0048471cellular_componentperinuclear region of cytoplasm
C0052720molecular_functionclass II DNA-(apurinic or apyrimidinic site) endonuclease activity
C0090580molecular_functionphosphodiesterase activity, acting on 3'-phosphoglycolate-terminated DNA strands
C0097698biological_processtelomere maintenance via base-excision repair
C0140431molecular_functionDNA-(abasic site) binding
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE PO4 A 400
ChainResidue
AASN174
AALA230
ATRP280
AHOH411

site_idAC2
Number of Residues3
DetailsBINDING SITE FOR RESIDUE PO4 B 401
ChainResidue
BASN174
BASN212
BALA230

site_idAC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE MG A 402
ChainResidue
AHOH414
AASP70
AGLU96

site_idAC4
Number of Residues2
DetailsBINDING SITE FOR RESIDUE MG B 403
ChainResidue
BASP70
BGLU96

site_idAC5
Number of Residues4
DetailsBINDING SITE FOR RESIDUE MG C 404
ChainResidue
CASN68
CASP70
CGLU96
CASP308

Functional Information from PROSITE/UniProt
site_idPS00726
Number of Residues10
DetailsAP_NUCLEASE_F1_1 AP endonucleases family 1 signature 1. PDILCLQETK
ChainResidueDetails
APRO89-LYS98

site_idPS00727
Number of Residues17
DetailsAP_NUCLEASE_F1_2 AP endonucleases family 1 signature 2. DSFRHlypntpyaYTFW
ChainResidueDetails
AASP251-TRP267

site_idPS00728
Number of Residues12
DetailsAP_NUCLEASE_F1_3 AP endonucleases family 1 signature 3. NvGwRLDYfLlS
ChainResidueDetails
AASN277-SER288

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues87
DetailsRegion: {"description":"Mitochondrial targeting sequence (MTS)"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues48
DetailsMotif: {"description":"Nuclear export signal (NES)"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues3
DetailsActive site: {"evidences":[{"source":"PubMed","id":"15380100","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues3
DetailsActive site: {"description":"Proton donor/acceptor","evidences":[{"source":"PubMed","id":"9351835","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1BIX","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues3
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PROSITE-ProRule","id":"PRU00764","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues18
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00764","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues3
DetailsSite: {"description":"Transition state stabilizer","evidences":[{"source":"PubMed","id":"8932375","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues3
DetailsSite: {"description":"Important for catalytic activity","evidences":[{"source":"PubMed","id":"21762700","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"9804799","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues3
DetailsSite: {"description":"Interaction with DNA substrate"}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues3
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues6
DetailsModified residue: {"description":"S-nitrosocysteine; alternate","evidences":[{"source":"PubMed","id":"17403694","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues3
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"PubMed","id":"19608861","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues3
DetailsModified residue: {"description":"Phosphothreonine; by CDK5","evidences":[{"source":"UniProtKB","id":"P28352","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues3
DetailsModified residue: {"description":"S-nitrosocysteine","evidences":[{"source":"PubMed","id":"17403694","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues5
DetailsAnnotated By Reference To The Literature 1ako
ChainResidueDetails
AASN212
AHIS309
AASN68
AASP283
AASP210

site_idCSA2
Number of Residues5
DetailsAnnotated By Reference To The Literature 1ako
ChainResidueDetails
BASN212
BHIS309
BASN68
BASP283
BASP210

site_idCSA3
Number of Residues5
DetailsAnnotated By Reference To The Literature 1ako
ChainResidueDetails
CASN212
CHIS309
CASN68
CASP283
CASP210

site_idMCSA1
Number of Residues8
DetailsM-CSA 510
ChainResidueDetails
AASP70metal ligand
AGLU96metal ligand
ATYR171electrostatic stabiliser, metal ligand
AASP210increase nucleophilicity, metal ligand, proton acceptor
AASN212
AASP283electrostatic stabiliser
AASP308metal ligand
AHIS309electrostatic stabiliser, metal ligand

site_idMCSA2
Number of Residues8
DetailsM-CSA 510
ChainResidueDetails
BASP70metal ligand
BGLU96metal ligand
BTYR171electrostatic stabiliser, metal ligand
BASP210increase nucleophilicity, metal ligand, proton acceptor
BASN212
BASP283electrostatic stabiliser
BASP308metal ligand
BHIS309electrostatic stabiliser, metal ligand

site_idMCSA3
Number of Residues8
DetailsM-CSA 510
ChainResidueDetails
CASP70metal ligand
CGLU96metal ligand
CTYR171electrostatic stabiliser, metal ligand
CASP210increase nucleophilicity, metal ligand, proton acceptor
CASN212
CASP283electrostatic stabiliser
CASP308metal ligand
CHIS309electrostatic stabiliser, metal ligand

239803

PDB entries from 2025-08-06

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