1AY6	Hydrolase Hydrolase Inhibitor	date	Nov 14, 1997
title	Thrombin Inhibitor From Theonalla, Cyclotheanamide-Based Mac Tripeptide Motif
authors	V.Ganesh, B.E.Maryanoff, A.Tulinsky
compound		source
Molecule: Thrombin Light Chain Chain: L Ec: 3.4.21.5		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Tissue: Blood
Molecule: Thrombin Heavy Chain Chain: H Ec: 3.4.21.5		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Tissue: Blood
Molecule: Hirugen Chain: I Fragment: Residues 55-64 Engineered: Yes		Synthetic: Yes Organism_scientific: Hirudo Medicinalis Organism_taxid: 6421 Other_details: Acetyl Hirugen
symmetry	Space Group: C 1 2 1	R_factor 0.166 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 71.080 72.140 72.820 90.00 100.80 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	1ZV, TYS	enzyme	Hydrolase E.C.3.4.21.5 BRENDA
related structures	by homologous chain: 1A3B, 1A4W
Gene Ontology	Chain Function Process Component H L
Primary reference	Molecular basis for the inhibition of human alpha-thrombin by the macrocyclic peptide cyclotheonamide A., Maryanoff BE, Qiu X, Padmanabhan KP, Tulinsky A, Almond HR Jr, Andrade-Gordon P, Greco MN, Kauffman JA, Nicolaou KC, Liu A, et al., Proc Natl Acad Sci U S A 1993 Sep 1;90(17):8048-52. PMID:8367461

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (58 Kb) [Save to disk] Biological Unit Coordinates (1ay6.pdb1.gz) 52 Kb LPC: Ligand-Protein Contacts for 1AY6 CSU: Contacts of Structural Units for 1AY6 Likely Quarternary Molecular Structure file(s) for 1AY6 Retrieve 1AY6 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1AY6 from S2C, [Save to disk]

View 1AY6 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 1AY6

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1AY6, from MSDmotif at EBI Genome occurence of 1AY6's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ay6.1, 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: [1ay6] [1ay6_J] [1ay6_I] [1ay6_L] [1ay6_H] SWISS-PROT database: [P00734] Domain organization of [THRB_HUMAN] by SWISSPFAM Domain found in 1AY6: [Tryp_SPc ] by SMART

Other resources with information on 1AY6

Community annotation for 1AY6 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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