3BTW Hydrolase Hydrolase Inhibitor date Mar 11, 1999
title The Crystal Structures Of The Complexes Between Bovine Beta- And Ten P1 Variants Of Bpti
authors R.Helland, J.Otlewski, O.Sundheim, M.Dadlez, A.O.Smalas
compound source
Molecule: Protein (Trypsin)
Chain: E
Organism_scientific: Bos Taurus
Organism_common: Cattle
Organism_taxid: 9913

Molecule: Protein (Bovine Pancreatic Trypsin Inhibitor)
Chain: I
Synonym: Bpti
Engineered: Yes
Mutation: Yes

Organism_scientific: Bos Taurus
Organism_common: Cattle
Organism_taxid: 9913
Expression_system: Escherichia Coli
Expression_system_taxid: 562
symmetry Space Group: I 2 2 2
R_factor 0.191 R_Free 0.238
length a length b length c angle alpha angle beta angle gamma
75.670 84.780 122.990 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.05 Å
ligand CA, SO4 enzyme Hydrolase E.C. BRENDA
related structures by homologous chain: 1BRB, 1P2O, 1XUF, 1YYY


Primary referenceThe crystal structures of the complexes between bovine beta-trypsin and ten P1 variants of BPTI., Helland R, Otlewski J, Sundheim O, Dadlez M, Smalas AO, J Mol Biol 1999 Apr 16;287(5):923-42. PMID:10222201
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (49 Kb) [Save to disk]
  • Biological Unit Coordinates (3btw.pdb1.gz) 44 Kb
  • Biological Unit Coordinates (3btw.pdb2.gz) 173 Kb
  • Biological Unit Coordinates (3btw.pdb3.gz) 87 Kb
  • LPC: Ligand-Protein Contacts for 3BTW
  • CSU: Contacts of Structural Units for 3BTW
  • Likely Quarternary Molecular Structure file(s) for 3BTW
  • Structure Factors (192 Kb)
  • Retrieve 3BTW in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3BTW from S2C, [Save to disk]
  • Re-refined 3btw structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3BTW 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 3BTW
  • 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 3BTW, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d3btwe_, region E [Jmol] [rasmolscript] [script source]
        - Domain d3btwi_, region I [Jmol] [rasmolscript] [script source]
  • Fold representative 3btw 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: [3btw_I] [3btw] [3btw_E]
  • SWISS-PROT database: [P00974] [P00760]
  • Domain organization of [BPT1_BOVIN] [TRY1_BOVIN] by SWISSPFAM
  • Domains found in 3BTW: [KU] [Tryp_SPc ] by SMART
  • Other resources with information on 3BTW
  • Community annotation for 3BTW 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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