1QHR	Blood Clotting Hydrolase Inhibitor	date	May 26, 1999
title	Novel Covalent Active Site Thrombin Inhibitors
authors	H.Jhoti, A.Cleasby, S.Reid, P.Thomas, A.Wonacott
compound		source
Molecule: Alpha Thrombin Chain: A Fragment: Light Chain Ec: 3.4.21.5		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Tissue: Blood Plasma
Molecule: Alpha Thrombin Chain: B Fragment: Heavy Chain Ec: 3.4.21.5		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Tissue: Blood Plasma
Molecule: Hirugen Chain: I Engineered: Yes Other_details: Exosite Inhibitor Of Thrombin		Synthetic: Yes Organism_scientific: Hirudo Medicinalis Organism_taxid: 6421 Other_details: This Peptide Was Chemically Synthesized. The For This Peptide Occurs Naturally In Medicinal Leech (Hirud Medicinalis).
symmetry	Space Group: C 1 2 1	R_factor 0.204 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 71.700 72.000 73.000 90.00 101.00 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	157, TYS	enzyme	Hydrolase E.C.3.4.21.5 BRENDA
related structures	by homologous chain: 1JMO, 1MKX, 1QJ6
Gene Ontology	Chain Function Process Component A B
Primary reference	Crystal structures of thrombin complexed to a novel series of synthetic inhibitors containing a 5,5-trans-lactone template., Jhoti H, Cleasby A, Reid S, Thomas PJ, Weir M, Wonacott A, Biochemistry 1999 Jun 22;38(25):7969-77. PMID:10387040

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (60 Kb) [Save to disk] Biological Unit Coordinates (1qhr.pdb1.gz) 55 Kb LPC: Ligand-Protein Contacts for 1QHR CSU: Contacts of Structural Units for 1QHR Likely Quarternary Molecular Structure file(s) for 1QHR Retrieve 1QHR in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QHR from S2C, [Save to disk]

View 1QHR 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 1QHR

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QHR, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qhr.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: [1qhr_I] [1qhr_B] [1qhr_A] [1qhr] SWISS-PROT database: [P01050] [P00734] Domain organization of [HIRV1_HIRME] [THRB_HUMAN] by SWISSPFAM Domain found in 1QHR: [Tryp_SPc ] by SMART

Other resources with information on 1QHR

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

Movements, Movies and Images

Domain movements in 1QHR from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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