1AI8	Blood Coagulation Hydrolase Inhibitor	date	May 01, 1997
title	Human Alpha-Thrombin Ternary Complex With The Exosite Inhibi Hirugen And Active Site Inhibitor Phch2oco-D-Dpa-Pro-Boromp
authors	E.Skordalakes, G.Dodson, S.Elgendy, C.A.Goodwin, D.Green, R.Tyrre M.F.Scully, J.Freyssinet, V.V.Kakkar, J.Deadman
compound		source
Molecule: Alpha-Thrombin (Small Subunit) Chain: L Ec: 3.4.21.5		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
Molecule: Alpha-Thrombin (Large Subunit) Chain: H Ec: 3.4.21.5		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606
Molecule: Hirudin Iiib Chain: I Ec: 3.4.21.5		Organism_scientific: Hirudo Medicinalis Organism_common: Medicinal Leech Organism_taxid: 6421
symmetry	Space Group: C 1 2 1	R_factor 0.170 R_Free 0.240
crystal cell	length a length b length c angle alpha angle beta angle gamma 69.714 71.464 71.648 90.00 99.82 90.00
method	X-Ray Diffraction	resolution	1.85 Å
ligand	T42, TYS	enzyme	Hydrolase E.C.3.4.21.5 BRENDA
related structures	by homologous chain: 1A3E, 1GHV
Gene Ontology	Chain Function Process Component H L
Primary reference	The refined 1.9-A X-ray crystal structure of D-Phe-Pro-Arg chloromethylketone-inhibited human alpha-thrombin: structure analysis, overall structure, electrostatic properties, detailed active-site geometry, and structure-function relationships., Bode W, Turk D, Karshikov A, Protein Sci 1992 Apr;1(4):426-71. PMID:1304349

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (60 Kb) [Save to disk] Biological Unit Coordinates (1ai8.pdb1.gz) 54 Kb LPC: Ligand-Protein Contacts for 1AI8 CSU: Contacts of Structural Units for 1AI8 Likely Quarternary Molecular Structure file(s) for 1AI8 Retrieve 1AI8 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1AI8 from S2C, [Save to disk]

View 1AI8 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 1AI8

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1AI8, from MSDmotif at EBI Genome occurence of 1AI8's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ai8.1, region L:,H [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: [1ai8_H] [1ai8_I] [1ai8_L] [1ai8] SWISS-PROT database: [P01050] [P00734] Domain organization of [HIRV1_HIRME] [THRB_HUMAN] by SWISSPFAM Domain found in 1AI8: [Tryp_SPc ] by SMART

Other resources with information on 1AI8

Community annotation for 1AI8 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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