1AB9 Complex (Serine Protease Peptide) date Feb 05, 1997
title Crystal Structure Of Bovine Gamma-Chymotrypsin
authors S.Sugio, A.Kashima, Y.Inoue, I.Maeda, T.Nose, Y.Shimohigashi
compound source
Molecule: Gamma-Chymotrypsin
Chain: A
Organism_scientific: Bos Taurus
Organism_common: Cattle
Organism_taxid: 9913

Molecule: Gamma-Chymotrypsin
Chain: B

Organism_scientific: Bos Taurus
Organism_common: Cattle
Organism_taxid: 9913

Molecule: Gamma-Chymotrypsin
Chain: C

Organism_scientific: Bos Taurus
Organism_common: Cattle
Organism_taxid: 9913

Molecule: Pentapeptide (Tpgvy)
Chain: D
Engineered: Yes

symmetry Space Group: P 42 21 2
R_factor 0.191 R_Free 0.190
length a length b length c angle alpha angle beta angle gamma
69.520 69.520 97.810 90.00 90.00 90.00
method X-Ray Diffractionresolution 1.60 Å
ligand SO4 enzyme Hydrolase E.C. BRENDA
related structures by homologous chain: 3GCT, 8GCH


Primary referenceX-ray crystal structure of a dipeptide-chymotrypsin complex in an inhibitory interaction., Kashima A, Inoue Y, Sugio S, Maeda I, Nose T, Shimohigashi Y, Eur J Biochem. 1998 Jul 1;255(1):12-23. PMID:9692896
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (45 Kb) [Save to disk]
  • Biological Unit Coordinates (1ab9.pdb1.gz) 40 Kb
  • Biological Unit Coordinates (1ab9.pdb2.gz) 79 Kb
  • Biological Unit Coordinates (1ab9.pdb3.gz) 78 Kb
  • LPC: Ligand-Protein Contacts for 1AB9
  • CSU: Contacts of Structural Units for 1AB9
  • Likely Quarternary Molecular Structure file(s) for 1AB9
  • Structure Factors (479 Kb)
  • Retrieve 1AB9 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1AB9 from S2C, [Save to disk]
  • Re-refined 1ab9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1AB9 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 1AB9
  • 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 1AB9, from MSDmotif at EBI
  • Genome occurence of 1AB9's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1ab9.1, region A:,B:,C [Jmol] [rasmolscript] [script source]
  • Fold representative 1ab9 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: [1ab9_B] [1ab9_C] [1ab9_A] [1ab9] [1ab9_D]
  • SWISS-PROT database: [P00766]
  • Domain organization of [CTRA_BOVIN] by SWISSPFAM
  • Domain found in 1AB9: [Tryp_SPc ] by SMART
  • Other resources with information on 1AB9
  • Community annotation for 1AB9 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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