1SEU Isomerase Dna date Feb 18, 2004
title Human Dna Topoisomerase I (70 Kda) In Complex With The Indolocarbazole Sa315f 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
Mutation: 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_cell_line: Sf9
Expression_system_vector_type: Baculovirus
Expression_system_plasmid: Pfactbac1
symmetry Space Group: P 1 21 1
R_factor 0.237 R_Free 0.295
length a length b length c angle alpha angle beta angle gamma
57.382 115.965 73.547 90.00 93.71 90.00
method X-Ray Diffractionresolution 3.00 Å
ligand PTR, SA3, TGP BindingDB enzyme Isomerase E.C. BRENDA
related structures by homologous chain: 1SC7, 1T8I

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 (1seu.pdb1.gz) 114 Kb
  • LPC: Ligand-Protein Contacts for 1SEU
  • CSU: Contacts of Structural Units for 1SEU
  • Likely Quarternary Molecular Structure file(s) for 1SEU
  • Retrieve 1SEU in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1SEU from S2C, [Save to disk]
  • View 1SEU 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 1SEU
  • 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 1SEU, from MSDmotif at EBI
  • Fold representative 1seu from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1seu_A] [1seu_D] [1seu_C] [1seu_B] [1seu]
  • SWISS-PROT database: [P11387]
  • Domain organization of [TOP1_HUMAN] by SWISSPFAM
  • Domain found in 1SEU: [TOPEUc ] by SMART
  • Other resources with information on 1SEU
  • Community annotation for 1SEU 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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