1QTX Signaling Protein date Jun 29, 1999
title The 1.65 Angstrom Structure Of Calmodulin Rs20 Peptide Complex
authors S.Weigand, W.F.Anderson
compound source
Molecule: Protein (Calmodulin)
Chain: A
Engineered: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Ut481
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pvuch-1
Other_details: Synthetic Construct

Molecule: Protein (Rs20)
Chain: B
Fragment: Calmodulin Binding Region From Smooth Musclenonmuscle Myosin Light Chain Kinase;
Engineered: Yes

Synthetic: Yes
Other_details: Peptide Analog Of The Calmodulin Recognition Region Of Chicken Smooth Muscle Nonmuscle Myosin Light Chain Kinase
symmetry Space Group: P 21 21 21
R_factor 0.185 R_Free 0.214
length a length b length c angle alpha angle beta angle gamma
70.046 55.344 41.528 90.00 90.00 90.00
method X-Ray Diffractionresolution 1.65 Å
ligand CA, NH2 enzyme
related structures by homologous chain: 1G4Y, 1OSA

Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (43 Kb) [Save to disk]
  • Biological Unit Coordinates (1qtx.pdb1.gz) 38 Kb
  • LPC: Ligand-Protein Contacts for 1QTX
  • CSU: Contacts of Structural Units for 1QTX
  • Likely Quarternary Molecular Structure file(s) for 1QTX
  • Structure Factors (331 Kb)
  • Retrieve 1QTX in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1QTX from S2C, [Save to disk]
  • Re-refined 1qtx structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1QTX 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 1QTX
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1QTX, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1qtxa_, region A [Jmol] [rasmolscript] [script source]
  • Fold representative 1qtx 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: [1qtx_A] [1qtx] [1qtx_B]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domain found in 1QTX: [EFh ] by SMART
  • Other resources with information on 1QTX
  • Community annotation for 1QTX 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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