2CNK	Hydrolase Hydrolase Inhibitor	date	May 22, 2006
title	Crystal Structures Of Caspase-3 In Complex With Aza-Peptide Inhibitors.
authors	R.Ganesan, S.Jelakovic, A.J.Campbell, Z.Z.Li, J.L.Asgian, J.C.Pow M.G.Grutter
compound		source
Molecule: Caspase-3 P17 Subunit Chain: A Fragment: Alpha Subunit, Residues 29-175 Synonym: Caspase-3 Subunit P17 Ec: 3.4.22.- Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) (Stratagene) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11d (Novagen)
Molecule: Caspase-3 P12 Subunit Chain: B Fragment: Beta Subunit, Residues 176-277 Synonym: Caspase-3 Subunit P12 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Aza-Peptide Expoxide Chain: I Fragment: Cbz-Asp-Glu-Val-Aasp-Ep-Coo-Ch2ph Engineered: Yes		Synthetic: Yes Organism_scientific: Synthetic Construct Organism_taxid: 32630
symmetry	Space Group: I 2 2 2	R_factor 0.165 R_Free 0.193
crystal cell	length a length b length c angle alpha angle beta angle gamma 66.784 83.786 96.453 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.75 Å
ligand	MY2, PHQ	enzyme	Hydrolase E.C.3.4.22 BRENDA
Gene Ontology	Chain Function Process Component A B
Primary reference	Exploring the S4 and S1 prime subsite specificities in caspase-3 with aza-peptide epoxide inhibitors., Ganesan R, Jelakovic S, Campbell AJ, Li ZZ, Asgian JL, Powers JC, Grutter MG, Biochemistry. 2006 Aug 1;45(30):9059-67. PMID:16866351

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (55 Kb) [Save to disk] Biological Unit Coordinates (2cnk.pdb1.gz) 97 Kb LPC: Ligand-Protein Contacts for 2CNK CSU: Contacts of Structural Units for 2CNK Likely Quarternary Molecular Structure file(s) for 2CNK Structure Factors (212 Kb) Retrieve 2CNK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2CNK from S2C, [Save to disk] Re-refined 2cnk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2CNK 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 2CNK

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 2CNK, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2cnk_A] [2cnk_I] [2cnk_B] [2cnk] SWISS-PROT database: [P42574] Domain organization of [CASP3_HUMAN] by SWISSPFAM Domain found in 2CNK: [CASc ] by SMART

Other resources with information on 2CNK

Community annotation for 2CNK at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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