1CQT Gene Regulation Dna date Aug 11, 1999
title Crystal Structure Of A Ternary Complex Containing An Oca-B Peptide, The Oct-1 Pou Domain, And An Octamer Element
authors D.I.Chasman, K.Cepek, P.A.Sharp, C.O.Pabo
compound source
Molecule: Dna (5'- D(Tpgptpaptpgpcpapapaptpapapgpg)-3');
Chain: M, O
Engineered: Yes
Synthetic: Yes

Molecule: Dna (5'- D(Apcpcptptpaptptptpgpcpaptpapc)-3');
Chain: N, P
Engineered: Yes

Synthetic: Yes

Molecule: Pou Domain, Class 2, Transcription Factor 1
Chain: A, B
Fragment: Oct-1 Pou Domain, Residues 278-439
Synonym: Octamer-Binding Transcription Factor 1, Otf-1, Nf- A1;
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: Plasmid
Expression_system_plasmid: See Reference 1

Molecule: Pou Domain, Class 2, Associating Factor 1
Chain: I, J
Fragment: Oca-B Peptide, Residues 1-44
Synonym: Oct-Binding Factor, Oca-B, Obf-1, Bob1
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Cell: B-Cell
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pgex
symmetry Space Group: P 41 21 2
R_factor 0.264 R_Free 0.326
crystal
cell
length a length b length c angle alpha angle beta angle gamma
93.722 93.722 152.651 90.00 90.00 90.00
method X-Ray Diffractionresolution 3.20 Å
Gene
Ontology
ChainFunctionProcessComponent
A, B


Primary referenceCrystal structure of an OCA-B peptide bound to an Oct-1 POU domain/octamer DNA complex: specific recognition of a protein-DNA interface., Chasman D, Cepek K, Sharp PA, Pabo CO, Genes Dev 1999 Oct 15;13(20):2650-7. PMID:10541551
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (78 Kb) [Save to disk]
  • Biological Unit Coordinates (1cqt.pdb1.gz) 38 Kb
  • Biological Unit Coordinates (1cqt.pdb2.gz) 37 Kb
  • CSU: Contacts of Structural Units for 1CQT
  • Likely Quarternary Molecular Structure file(s) for 1CQT
  • Retrieve 1CQT in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1CQT from S2C, [Save to disk]
  • View 1CQT 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 1CQT
  • 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 1CQT, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1cqta1, region A:102-161 [Jmol] [rasmolscript] [script source]
        - Domain d1cqta2, region A:2-75 [Jmol] [rasmolscript] [script source]
        - Domain d1cqtb2, region B:505-575 [Jmol] [rasmolscript] [script source]
        - Domain d1cqtb1, region B:602-661 [Jmol] [rasmolscript] [script source]
  • Fold representative 1cqt from FSSP and Dali (Families of Structurally Similar Proteins)
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1cqt_M] [1cqt_J] [1cqt_O] [1cqt_N] [1cqt_P] [1cqt_B] [1cqt_A] [1cqt_I] [1cqt]
  • SWISS-PROT database: [Q16633] [P14859]
  • Domain organization of [OBF1_HUMAN] [PO2F1_HUMAN] by SWISSPFAM
  • Domains found in 1CQT: [HOX] [POU ] by SMART
  • Other resources with information on 1CQT
  • Community annotation for 1CQT 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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