1QX3	Hydrolase	date	Sep 04, 2003
title	Conformational Restrictions In The Active Site Of Unliganded Caspase-3
authors	C.Z.Ni, C.Li, J.C.Wu, A.P.Spada, K.R.Ely
compound		source
Molecule: Apopain Chain: A Synonym: Cysteine Protease Cpp32, Yama Protein, Cpp-32, Cas Casp-3, Srebp Cleavage Activity 1, Sca-1; Ec: 3.4.22.- Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Casp3 Or Cpp32 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet21b
symmetry	Space Group: P 21 21 2	R_factor 0.249 R_Free 0.278
crystal cell	length a length b length c angle alpha angle beta angle gamma 70.260 96.190 44.170 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.90 Å
ligand		enzyme	Hydrolase E.C.3.4.22 BRENDA
related structures	by homologous chain: 1NMS, 1RHJ
Gene Ontology	Chain Function Process Component A phospholipase A2 activator a...
Primary reference	Conformational restrictions in the active site of unliganded human caspase-3., Ni CZ, Li C, Wu JC, Spada AP, Ely KR, J Mol Recognit 2003 May-Jun;16(3):121-4. PMID:12833566

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (45 Kb) [Save to disk] Biological Unit Coordinates (1qx3.pdb1.gz) 82 Kb CSU: Contacts of Structural Units for 1QX3 Likely Quarternary Molecular Structure file(s) for 1QX3 Retrieve 1QX3 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QX3 from S2C, [Save to disk]

View 1QX3 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 1QX3

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QX3, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qx3a_, region A [Jmol] [rasmolscript] [script source] 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: [1qx3_A] [1qx3] SWISS-PROT database: [P42574] Domain organization of [CASP3_HUMAN] by SWISSPFAM Domain found in 1QX3: [CASc ] by SMART

Other resources with information on 1QX3

Community annotation for 1QX3 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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