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4G0U

Human topoisomerase IIbeta in complex with DNA and amsacrine

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_id1
Number of Residues
Details
ChainResidue

site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 1301
ChainResidue
AASP557
AASP559
AHOH1401
AHOH1485
AHOH1549
CHOH102

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG A 1302
ChainResidue
AHOH1560
CHOH114
AASN795
AASN867
AHOH1559

site_idAC3
Number of Residues11
DetailsBINDING SITE FOR RESIDUE ASW B 1301
ChainResidue
BPRO455
BARG503
BGLY504
BLYS505
BALA521
BGLU522
BGLN778
DDA12
DDG13
EDC8
FDT9

site_idAC4
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG B 1302
ChainResidue
BASP557
BASP559
BHOH1412
BHOH1508
BHOH1554
EHOH107

site_idAC5
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG B 1303
ChainResidue
BASN795
BHOH1568
BHOH1569
EHOH116
EHOH117

site_idAC6
Number of Residues7
DetailsBINDING SITE FOR RESIDUE MG D 101
ChainResidue
DDG17
DHOH219
DHOH220
DHOH221
DHOH222
EHOH113
EHOH114

site_idAC7
Number of Residues11
DetailsBINDING SITE FOR RESIDUE ASW F 101
ChainResidue
APRO455
AARG503
AGLY504
ALYS505
AALA521
AGLU522
CDC8
DDT9
FDA12
FDG13
FHOH208

site_idAC8
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG F 102
ChainResidue
CHOH113
FHOH213
FHOH214
FHOH215
FHOH216
FHOH217

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 Residues9
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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