1CH8 Ligase date Mar 31, 1999
title Structure Of Adenylosuccinate Synthetase From E. Coli Comple Stringent Effector, Ppg2':3'P
authors Z.Hou, M.Cashel, H.J.Fromm, R.B.Honzatko
compound source
Molecule: Protein (Adenylosuccinate Synthetase)
Chain: A
Synonym: Ampsase
Engineered: Yes
Organism_scientific: Escherichia Coli
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 0.190 R_Free 0.250
length a length b length c angle alpha angle beta angle gamma
80.300 80.300 158.200 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.50 Å
ligand GPX, HDA, IMP, MG, NO3 enzyme Ligase E.C. BRENDA
related structures by homologous chain: 1ADI, 1CG4

Primary referenceEffectors of the stringent response target the active site of Escherichia coli adenylosuccinate synthetase., Hou Z, Cashel M, Fromm HJ, Honzatko RB, J Biol Chem 1999 Jun 18;274(25):17505-10. PMID:10364182
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (80 Kb) [Save to disk]
  • Biological Unit Coordinates (1ch8.pdb1.gz) 76 Kb
  • Biological Unit Coordinates (1ch8.pdb2.gz) 151 Kb
  • LPC: Ligand-Protein Contacts for 1CH8
  • CSU: Contacts of Structural Units for 1CH8
  • Likely Quarternary Molecular Structure file(s) for 1CH8
  • Retrieve 1CH8 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1CH8 from S2C, [Save to disk]
  • View 1CH8 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 1CH8
  • 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 1CH8, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1ch8a_, region A [Jmol] [rasmolscript] [script source]
  • Fold representative 1ch8 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: [1ch8_A] [1ch8]
  • SWISS-PROT database: [P0A7D4]
  • Domain organization of [PURA_ECOLI] by SWISSPFAM
  • Domain found in 1CH8: [Adenylsucc_synt ] by SMART
  • Other resources with information on 1CH8
  • Community annotation for 1CH8 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Domain movements in 1CH8 from the Database of Macromolecular Movements.
  • Images from IMB Jena Image Library of Biological Macromolecules.

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