1QTN	Hydrolase Hydrolase Inhibitor	date	Jun 28, 1999
title	Crystal Structure Of The Complex Of Caspase-8 With The Tetra Inhibitor Ace-Ietd-Aldehyde
authors	W.Watt, K.D.Watenpaugh
compound		source
Molecule: Caspase-8 Chain: A Fragment: P18 Fragment Ec: 3.4.22.- Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Caspase-8 Chain: B Fragment: P11 Fragment Ec: 3.4.22.- Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Acetyl-Ile-Glu-Thr-Asp-Aldehyde Chain: C Engineered: Yes		Synthetic: Yes Other_details: Chemically Synthesized
symmetry	Space Group: P 31 2 1	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 62.400 62.400 129.250 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	1.20 Å
ligand	ACE, ASJ, DTD	enzyme	Hydrolase E.C.3.4.22 BRENDA
note	1QTN is a representative structure
related structures	by homologous chain: 1QDU
Gene Ontology	Chain Function Process Component A B
Primary reference	The atomic-resolution structure of human caspase-8, a key activator of apoptosis., Watt W, Koeplinger KA, Mildner AM, Heinrikson RL, Tomasselli AG, Watenpaugh KD, Structure Fold Des 1999 Sep 15;7(9):1135-43. PMID:10508785

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (52 Kb) [Save to disk] Biological Unit Coordinates (1qtn.pdb1.gz) 92 Kb LPC: Ligand-Protein Contacts for 1QTN CSU: Contacts of Structural Units for 1QTN Likely Quarternary Molecular Structure file(s) for 1QTN Retrieve 1QTN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QTN from S2C, [Save to disk]

View 1QTN 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 1QTN

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 1QTN 1QTNA 1QTNB 1QTNC from the CEP Server. Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QTN, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qtn.1, region A:,B [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: [1qtn_A] [1qtn] [1qtn_B] [1qtn_C] SWISS-PROT database: [Q14790] Domain organization of [CASP8_HUMAN] by SWISSPFAM Domain found in 1QTN: [CASc ] by SMART

Other resources with information on 1QTN

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

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