2CIO	Hydrolase Inhibitor	date	Mar 24, 2006
title	The High Resolution X-Ray Structure Of Papain Complexed With Of The Trypanosoma Brucei Cysteine Protease Inhibitor Icp.
authors	M.S.Alphey, W.N.Hunter
compound		source
Molecule: Papain Chain: A Synonym: Papaya Proteinase I, Ppi, Allergen, Carp1papain Ec: 3.4.22.2		Organism_scientific: Carica Papaya Organism_taxid: 3649 Other_details: Purchased From Sigma
Molecule: Inhibitor Of Cysteine Peptidase Chain: B Synonym: Cysteine Protease Inhibitor, Icp Engineered: Yes Other_details: Two Peptide Fragments From Digestion Of Icp		Organism_scientific: Trypanosoma Brucei Organism_taxid: 5691 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_variant: C43 Expression_system_plasmid: Pbp117
symmetry	Space Group: P 21 21 21	R_factor 0.177 R_Free 0.225
crystal cell	length a length b length c angle alpha angle beta angle gamma 42.323 46.118 95.697 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.50 Å
ligand	ACT, GOL, OCS	enzyme	Hydrolase E.C.3.4.22.2 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	High-resolution complex of papain with remnants of a cysteine protease inhibitor derived from Trypanosoma brucei., Alphey MS, Hunter WN, Acta Crystallograph Sect F Struct Biol Cryst Commun. 2006 Jun 1;62(Pt, 6):504-8. Epub 2006 May 5. PMID:16754967

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (85 Kb) [Save to disk] Biological Unit Coordinates (2cio.pdb1.gz) 78 Kb LPC: Ligand-Protein Contacts for 2CIO CSU: Contacts of Structural Units for 2CIO Likely Quarternary Molecular Structure file(s) for 2CIO Structure Factors (213 Kb) Retrieve 2CIO in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2CIO from S2C, [Save to disk] Re-refined 2cio structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2CIO 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 2CIO

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 2CIO, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2cio_A] [2cio] [2cio_B] SWISS-PROT database: [P00784] [Q868H0] Domain organization of [PAPA1_CARPA] [Q868H0_9TRYP] by SWISSPFAM Domain found in 2CIO: [Pept_C1 ] by SMART

Other resources with information on 2CIO

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

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