1SC7 Isomerase Dna date Feb 11, 2004
title Human Dna Topoisomerase I (70 Kda) In Complex With The Indenoisoquinoline Mj-II-38 And Covalent Complex With A 22 Base Pair Dna Duplex
authors B.L.Staker, M.D.Feese, M.Cushman, Y.Pommier, D.Zembower, L.Stewart, A.B.Burgin
compound source
Molecule: 5'-D(Apapapapapgpapcptpt)-3'
Chain: B
Engineered: Yes
Synthetic: Yes

Molecule: 5'-D((Tgp)Pgpapapapapaptptptptpt)-3'
Chain: C
Engineered: Yes

Synthetic: Yes

Molecule: 5'- D(Apapapapaptptptptptpcpcpapapgptpcptptp Tptpt)-3';
Chain: D
Engineered: Yes

Synthetic: Yes

Molecule: Dna Topoisomerase I
Chain: A
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Top1
Expression_system: Spodoptera Frugiperda
Expression_system_common: Fall Armyworm
Expression_system_taxid: 7108
Expression_system_vector_type: Baculovirus
symmetry Space Group: C 1 2 1
R_factor 0.233 R_Free 0.285
length a length b length c angle alpha angle beta angle gamma
260.940 74.659 57.494 90.00 96.94 90.00
method X-Ray Diffractionresolution 3.00 Å
ligand M38, PG4, PTR, TGP enzyme Isomerase E.C. BRENDA
related structures by homologous chain: 1A36, 1SEU
Primary referenceStructures of three classes of anticancer agents bound to the human topoisomerase I-DNA covalent complex., Staker BL, Feese MD, Cushman M, Pommier Y, Zembower D, Stewart L, Burgin AB, J Med Chem 2005 Apr 7;48(7):2336-45. PMID:15801827
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (120 Kb) [Save to disk]
  • Biological Unit Coordinates (1sc7.pdb1.gz) 114 Kb
  • LPC: Ligand-Protein Contacts for 1SC7
  • CSU: Contacts of Structural Units for 1SC7
  • Likely Quarternary Molecular Structure file(s) for 1SC7
  • Retrieve 1SC7 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1SC7 from S2C, [Save to disk]
  • View 1SC7 in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1SC7
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1SC7, from MSDmotif at EBI
  • Fold representative 1sc7 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1sc7_B] [1sc7_A] [1sc7_C] [1sc7] [1sc7_D]
  • SWISS-PROT database: [P11387]
  • Domain organization of [TOP1_HUMAN] by SWISSPFAM
  • Domain found in 1SC7: [TOPEUc ] by SMART
  • Other resources with information on 1SC7
  • Community annotation for 1SC7 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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