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4J3N

Human Topoisomerase Iibeta in complex with DNA

Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0003918molecular_functionDNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity
A0005524molecular_functionATP binding
A0006259biological_processDNA metabolic process
A0006265biological_processDNA topological change
B0003677molecular_functionDNA binding
B0003918molecular_functionDNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity
B0005524molecular_functionATP binding
B0006259biological_processDNA metabolic process
B0006265biological_processDNA topological change
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 1301
ChainResidue
AASP557
AASP559
AHOH1401
AHOH1614
AHOH1615
CHOH103

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG A 1302
ChainResidue
CHOH122
CHOH123
AASN867
AGLY868
AHOH1624

site_idAC3
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG A 1303
ChainResidue
APHE722
AASP726
AHOH1430
FDC16
FHOH213

site_idAC4
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG B 1301
ChainResidue
BASP557
BASP559
BHOH1402
BHOH1434
BHOH1516
BHOH1672

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG B 1302
ChainResidue
BASN795
BASN867
BHOH1679
BHOH1680
EHOH124
EHOH125

site_idAC6
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG D 101
ChainResidue
BHOH1612
BHOH1740
DHOH202
DHOH203
DHOH208

site_idAC7
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG F 101
ChainResidue
AHOH1626
AHOH1627
FHOH214
FHOH215
FHOH216

Functional Information from PROSITE/UniProt
site_idPS00177
Number of Residues9
DetailsTOPOISOMERASE_II DNA topoisomerase II signature. LTEGDSAKS
ChainResidueDetails
ALEU475-SER483

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues234
DetailsDomain: {"description":"Toprim","evidences":[{"source":"PROSITE-ProRule","id":"PRU00995","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues18
DetailsRegion: {"description":"Interaction with DNA"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues20
DetailsMotif: {"description":"Nuclear export signal"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsActive site: {"description":"O-(5'-phospho-DNA)-tyrosine intermediate","evidences":[{"source":"PROSITE-ProRule","id":"PRU01384","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"21778401","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00995","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00995","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"21778401","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues12
DetailsSite: {"description":"Interaction with DNA"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues2
DetailsSite: {"description":"Interaction with DNA","evidences":[{"source":"PROSITE-ProRule","id":"PRU00995","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues2
DetailsSite: {"description":"Transition state stabilizer"}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues2
DetailsSite: {"description":"Important for DNA bending; intercalates between base pairs of target DNA"}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues10
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)","evidences":[{"source":"PubMed","id":"28112733","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues1
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)","evidences":[{"source":"PubMed","id":"25772364","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"28112733","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

240971

PDB entries from 2025-08-27

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