3CBK	Hydrolase Hydrolase Inhibitor	date	Feb 22, 2008
title	Chagasin-Cathepsin B
authors	I.Redzynia, G.D.Bujacz, M.Abrahamson, A.Ljunggren, M.Jaskolski, J
compound		source
Molecule: Cathepsin B Chain: A Synonym: Cathepsin B1, App Secretase, Apps Ec: 3.4.22.1 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Ctsb, Cpsb Expression_system: Pichia Pastoris Expression_system_taxid: 4922 Expression_system_strain: Gs115 Expression_system_vector_type: Plasmid Expression_system_plasmid: Ppic9
Molecule: Chagasin Chain: B Engineered: Yes		Organism_scientific: Trypanosoma Cruzi Organism_taxid: 5693 Gene: Cha Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: P-Gex-6p-1
symmetry	Space Group: P 42 21 2	R_factor 0.193 R_Free 0.242
crystal cell	length a length b length c angle alpha angle beta angle gamma 85.066 85.066 115.691 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.67 Å
ligand		enzyme	Hydrolase E.C.3.4.22.1 BRENDA
Gene Ontology	Chain Function Process Component A B cysteine-type endopeptidase ...
Primary reference	Displacement of the occluding loop by the parasite protein, chagasin, results in efficient inhibition of human cathepsin B., Redzynia I, Ljunggren A, Abrahamson M, Mort JS, Krupa JC, Jaskolski M, Bujacz G, J Biol Chem. 2008 Aug 15;283(33):22815-25. Epub 2008 May 30. PMID:18515357

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (63 Kb) [Save to disk] Biological Unit Coordinates (3cbk.pdb1.gz) 57 Kb CSU: Contacts of Structural Units for 3CBK Likely Quarternary Molecular Structure file(s) for 3CBK Structure Factors (186 Kb) Retrieve 3CBK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3CBK from S2C, [Save to disk] Re-refined 3cbk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3CBK 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 3CBK

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 3D motif for 3CBK, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3cbk_A] [3cbk] [3cbk_B] SWISS-PROT database: [P07858] [Q966X9] Domain organization of [CATB_HUMAN] [CHAG_TRYCR] by SWISSPFAM Domain found in 3CBK: [Pept_C1 ] by SMART

Other resources with information on 3CBK

Community annotation for 3CBK at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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