2OCT Protein Binding date Dec 21, 2006
title Stefin B (Cystatin B) Tetramer
authors S.Jenko Kokalj, G.Guncar, D.Turk
compound source
Molecule: Cystatin B
Chain: A, B
Synonym: Liver Thiol Proteinase Inhibitor, Cpi-B, Stefin B
Engineered: Yes
Mutation: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Cstb
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Bl21(De3)Plyss
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet-11a
symmetry Space Group: C 1 2 1
length a length b length c angle alpha angle beta angle gamma
120.123 30.857 51.349 90.00 95.81 90.00
method X-Ray Diffractionresolution 1.40 Å
note 2OCT is a representative structure
A, B
  • endopeptidase inhibitor acti...
  • cysteine-type endopeptidase ...

  • Primary referenceEssential role of proline isomerization in stefin B tetramer formation., Jenko Kokalj S, Guncar G, Stern I, Morgan G, Rabzelj S, Kenig M, Staniforth RA, Waltho JP, Zerovnik E, Turk D, J Mol Biol. 2007 Mar 9;366(5):1569-79. Epub 2006 Dec 16. PMID:17217964
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (40 Kb) [Save to disk]
  • Biological Unit Coordinates (2oct.pdb1.gz) 71 Kb
  • CSU: Contacts of Structural Units for 2OCT
  • Likely Quarternary Molecular Structure file(s) for 2OCT
  • Structure Factors (940 Kb)
  • Retrieve 2OCT in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2OCT from S2C, [Save to disk]
  • Re-refined 2oct structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2OCT 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 2OCT
  • 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 2OCT, from MSDmotif at EBI
  • Fold representative 2oct from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2oct] [2oct_A] [2oct_B]
  • SWISS-PROT database: [P04080]
  • Belongs to the stefin b pore-forming protein (stefin b) family according to TCDB.
  • Domain organization of [CYTB_HUMAN] by SWISSPFAM
  • Domain found in 2OCT: [CY ] by SMART
  • Other resources with information on 2OCT
  • Community annotation for 2OCT 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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