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6CQ2

Crystal structure of Mycobacterium tuberculosis Topoisomerase I in complex with oligonucleotide MTS2-12 and Magnesium

Functional Information from GO Data
ChainGOidnamespacecontents
A0003677molecular_functionDNA binding
A0003916molecular_functionDNA topoisomerase activity
A0003917molecular_functionDNA topoisomerase type I (single strand cut, ATP-independent) activity
A0006265biological_processDNA topological change
Functional Information from PDB Data
site_idAC1
Number of Residues5
Detailsbinding site for residue MG A 801
ChainResidue
AGLU24
AASP111
AHOH903
BDC6
BDT7

site_idAC2
Number of Residues3
Detailsbinding site for residue MG A 802
ChainResidue
AGLU296
AHIS492
AHOH902

site_idAC3
Number of Residues3
Detailsbinding site for residue MG A 803
ChainResidue
AASP507
AHIS509
AASP220

site_idAC4
Number of Residues3
Detailsbinding site for residue MG A 804
ChainResidue
AGLU589
AGLU598
AHIS613

site_idAC5
Number of Residues4
Detailsbinding site for residue PO4 A 805
ChainResidue
AGLY112
AHIS139
AGLN386
AHIS389

Functional Information from PROSITE/UniProt
site_idPS00396
Number of Residues15
DetailsTOPO_IA_1 Topoisomerase (Topo) IA-type active site signature. QrLYEngy.........ITYmRTD
ChainResidueDetails
AGLN332-ASP346

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues124
DetailsDomain: {"description":"Toprim","evidences":[{"source":"HAMAP-Rule","id":"MF_00952","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues5
DetailsRegion: {"description":"Interaction with DNA","evidences":[{"source":"HAMAP-Rule","id":"MF_00952","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsActive site: {"description":"O-(5'-phospho-DNA)-tyrosine intermediate","evidences":[{"source":"PROSITE-ProRule","id":"PRU01383","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"HAMAP-Rule","id":"MF_00952","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues8
DetailsSite: {"description":"Interaction with DNA","evidences":[{"source":"HAMAP-Rule","id":"MF_00952","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

239149

PDB entries from 2025-07-23

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