1aix Summary

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HUMAN ALPHA-THROMBIN TERNARY COMPLEX WITH EXOSITE INHIBITOR HIRUGEN AND ACTIVE SITE INHIBITOR PHCH2OCO-D-DPA-PRO-BOROVAL

The structure was published by Bode, W., Turk, D., and Karshikov, A., in 1992 in a paper entitled "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." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.1 Å and deposited in 1997.

The experimental data on which the structure is based was not deposited.

This PDB entry contains a complex of 3 biomacromolecules, namely ALPHA-THROMBIN (SMALL SUBUNIT), ALPHA-THROMBIN (LARGE SUBUNIT), and HIRUGEN.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule most likely forms heterotrimers.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
L ALPHA-THROMBIN (SMALL SUBUNIT) P00734 (328-363) (THRB_HUMAN)search Homo sapienssearch 93% 36 75%
H ALPHA-THROMBIN (LARGE SUBUNIT) P00734 (364-622) (THRB_HUMAN)search Homo sapienssearch 93% 259 96%
I HIRUGEN P28510 (55-64) (HIR3B_HIRME)search Hirudo medicinalissearch < 90% 12 83%


This entry contains 2 unique UniProt proteins:

UniProt accession Name Organism PDB
P00734 (328 - 363) ALPHA-THROMBIN (SMALL SUBUNIT) Homo sapiens
P28510 (55 - 64) HIRUGEN Hirudo medicinalis

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
L (P00734) Eukaryotic proteasessearch PF09396: Thrombin light chainsearch
H (P00734) Eukaryotic proteasessearch Trypsin-like serine proteasessearch PF00089: Trypsinsearch
I Hirudinsearch

Chain ID Biological process (GO) Molecular function (GO) Cellular component (GO)
L (P00734) blood coagulationsearch proteolysissearch serine-type endopeptidase activitysearch extracellular regionsearch
H (P00734) proteolysissearch blood coagulationsearch serine-type endopeptidase activitysearch catalytic activitysearch calcium ion bindingsearch

Chain InterPro annotation
L Thrombin light chainsearch
H Peptidase S1search Peptidase S1A, chymotrypsin-typesearch Prothrombin/thrombinsearch Trypsin-like cysteine/serine peptidase domainsearch Peptidase S1, trypsin family, active sitesearch
I