1A3B	Hydrolase Hydrolase Inhibitor	date	Jan 20, 1998
title	Complex Of Human Alpha-Thrombin With The Bifunctional Borona Inhibitor Borolog1
authors	E.Skordalakes, S.Elgendy, G.Dodson, C.A.Goodwin, D.Green, M.F.Scu J.H.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 Chain: I		Organism_scientific: Hirudo Medicinalis Organism_common: Medicinal Leech Organism_taxid: 6421
symmetry	Space Group: C 1 2 1	R_factor 0.170 R_Free 0.230
crystal cell	length a length b length c angle alpha angle beta angle gamma 70.150 71.340 71.650 90.00 100.23 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	T29	enzyme	Hydrolase E.C.3.4.21.5 BRENDA
related structures	by homologous chain: 1AY6, 1TOM
Gene Ontology	Chain Function Process Component H L
Primary reference	Bifunctional peptide boronate inhibitors of thrombin: crystallographic analysis of inhibition enhanced by linkage to an exosite 1 binding peptide., Skordalakes E, Elgendy S, Goodwin CA, Green D, Scully MF, Kakkar VV, Freyssinet JM, Dodson G, Deadman JJ, Biochemistry. 1998 Oct 13;37(41):14420-7. PMID:9772168

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (59 Kb) [Save to disk] Biological Unit Coordinates (1a3b.pdb1.gz) 54 Kb LPC: Ligand-Protein Contacts for 1A3B CSU: Contacts of Structural Units for 1A3B Likely Quarternary Molecular Structure file(s) for 1A3B Retrieve 1A3B in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A3B from S2C, [Save to disk]

View 1A3B 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 1A3B

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1A3B, from MSDmotif at EBI Genome occurence of 1A3B's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a3b.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: [1a3b] [1a3b_L] [1a3b_H] [1a3b_I] SWISS-PROT database: [P28504] [P00734] Domain organization of [HIR2_HIRME] [THRB_HUMAN] by SWISSPFAM Domain found in 1A3B: [Tryp_SPc ] by SMART

Other resources with information on 1A3B

Community annotation for 1A3B at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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