1CG1 Ligase date Mar 26, 1999
title Structure Of The Mutant (K16q) Of Adenylosuccinate Synthetas Coli Complexed With Hadacidin, Gdp, 6-Phosphoryl-Imp, And M
authors J.Y.Choe, B.W.Poland, H.Fromm, R.Honzatko
compound source
Molecule: Protein (Adenylosuccinate Synthetase)
Chain: A
Synonym: Ampsase
Engineered: Yes
Mutation: Yes
Organism_scientific: Escherichia Coli K12
Organism_taxid: 83333
Strain: K-12
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Pur A- Strain H1238
Expression_system_plasmid: Ptrc99a
symmetry Space Group: P 32 2 1
R_factor 0.169 R_Free 0.249
length a length b length c angle alpha angle beta angle gamma
80.370 80.370 158.520 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.50 Å
ligand GDP, HDA, IMO, MG enzyme Ligase E.C. BRENDA
related structures by homologous chain: 1CG3, 1CG4

Primary referenceMechanistic implications from crystalline complexes of wild-type and mutant adenylosuccinate synthetases from Escherichia coli., Choe JY, Poland BW, Fromm HJ, Honzatko RB, Biochemistry 1999 May 25;38(21):6953-61. PMID:10346917
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (78 Kb) [Save to disk]
  • Biological Unit Coordinates (1cg1.pdb1.gz) 145 Kb
  • LPC: Ligand-Protein Contacts for 1CG1
  • CSU: Contacts of Structural Units for 1CG1
  • Likely Quarternary Molecular Structure file(s) for 1CG1
  • Structure Factors (231 Kb)
  • Retrieve 1CG1 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1CG1 from S2C, [Save to disk]
  • Re-refined 1cg1 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1CG1 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 1CG1
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1CG1, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1cg1a_, region A [Jmol] [rasmolscript] [script source]
  • 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: [1cg1_A] [1cg1]
  • SWISS-PROT database: [P0A7D4]
  • Domain organization of [PURA_ECOLI] by SWISSPFAM
  • Domain found in 1CG1: [Adenylsucc_synt ] by SMART
  • Other resources with information on 1CG1
  • Community annotation for 1CG1 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Domain movements in 1CG1 from the Database of Macromolecular Movements.
  • Images from IMB Jena Image Library of Biological Macromolecules.

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