4PKI Contractile Protein Actin-Binding Protei date May 14, 2014
title Complex Of Atp-Actin With The C-Terminal Actin-Binding Domai Tropomodulin
authors J.N.Rao, R.Dominguez
compound source
Molecule: Actin, Alpha Skeletal Muscle
Chain: A
Synonym: Alpha-Actin-1
Organism_scientific: Oryctolagus Cuniculus
Organism_common: Rabbit
Organism_taxid: 9986
Tissue: Skeletal Muscle

Molecule: Gelsolin,Tropomodulin-1 Chimera
Chain: G
Fragment: Gelsolin (Unp Residues 12-136), Ggsggsggs Linker, Actin-Binding Site 2 (Unp Residues 160-349);
Synonym: Agel,Actin-Depolymerizing Factor,Adf,Brevin,Erythr Tropomodulin,E-Tmod;
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Gsn, Tmod1, D9s57e, Tmod
Expression_system: Escherichia Coli
Expression_system_taxid: 469008
Expression_system_strain: Bl21(De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Ptyb11
symmetry Space Group: P 21 21 21
R_factor 0.168 R_Free 0.201
length a length b length c angle alpha angle beta angle gamma
69.393 81.211 170.708 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.30 Å
ligand ATP, CA, HIC enzyme


Primary referenceActin cytoskeleton. Mechanism of actin filament pointed-end capping by tropomodulin., Rao JN, Madasu Y, Dominguez R, Science. 2014 Jul 25;345(6195):463-7. doi: 10.1126/science.1256159. PMID:25061212
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (346 Kb) [Save to disk]
  • Biological Unit Coordinates (4pki.pdb1.gz) 337 Kb
  • LPC: Ligand-Protein Contacts for 4PKI
  • CSU: Contacts of Structural Units for 4PKI
  • Structure Factors (742 Kb)
  • Retrieve 4PKI in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 4PKI from S2C, [Save to disk]
  • Re-refined 4pki structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 4PKI 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 4PKI
  • 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 4PKI, from MSDmotif at EBI
  • Fold representative 4pki from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [4pki_A] [4pki] [4pki_G]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domains found in 4PKI: [ACTIN] [GEL ] by SMART
  • Other resources with information on 4PKI
  • Community annotation for 4PKI at PDBWiki (http://pdbwiki.org)

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