1XG6 Hydrolase Inhibitor date Sep 16, 2004
title The Crystal Structure Of The P1 Mutant (Leu To Arg)Of A Wing Chymotrypsin Inhibitor(Kunitz)Solved At 2.15a Resolution
authors U.Sen, J.K.Dattagupta, J.Dasgupta, S.Khamrui
compound source
Molecule: Chymotrypsin Inhibitor 3
Chain: A
Synonym: Winged Bean Chymotrypsin Inhibitor, Wci-3
Engineered: Yes
Mutation: Yes
Organism_scientific: Psophocarpus Tetragonolobus
Organism_common: Winged Bean
Organism_taxid: 3891
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet28a+
symmetry Space Group: P 65
R_factor 0.199 R_Free 0.236
crystal
cell
length a length b length c angle alpha angle beta angle gamma
99.570 99.570 37.261 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.15 Å
Gene
Ontology
ChainFunctionProcessComponent
A
  • endopeptidase inhibitor acti...
  • serine-type endopeptidase in...


  • Primary referenceSingle mutation at P1 of a chymotrypsin inhibitor changes it to a trypsin inhibitor: X-ray structural (2.15 A) and biochemical basis., Khamrui S, Dasgupta J, Dattagupta JK, Sen U, Biochim Biophys Acta 2005 Aug 31;1752(1):65-72. PMID:16081330
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (37 Kb) [Save to disk]
  • Biological Unit Coordinates (1xg6.pdb1.gz) 33 Kb
  • CSU: Contacts of Structural Units for 1XG6
  • Likely Quarternary Molecular Structure file(s) for 1XG6
  • Retrieve 1XG6 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1XG6 from S2C, [Save to disk]
  • View 1XG6 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 1XG6
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1XG6, from MSDmotif at EBI
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1xg6] [1xg6_A]
  • SWISS-PROT database: [P10822]
  • Domain organization of [ICW3_PSOTE] by SWISSPFAM
  • Domain found in 1XG6: [STI ] by SMART
  • Other resources with information on 1XG6
  • Community annotation for 1XG6 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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