1TB6	Hydrolase Blood Clotting	date	May 19, 2004
title	2.5a Crystal Structure Of The Antithrombin-Thrombin-Heparin Complex
authors	W.Li, D.J.Johnson, C.T.Esmon, J.A.Huntington
compound		source
Molecule: Thrombin Chain: L Fragment: Thrombin Light Chain Synonym: Coagulation Factor II Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: F2 Expression_system: Cricetulus Griseus Expression_system_common: Chinese Hamster Expression_system_taxid: 10029
Molecule: Thrombin Chain: H Fragment: Thrombin Heavy Chain, Serine Protease Synonym: Coagulation Factor II Ec: 3.4.21.5 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: F2 Expression_system: Cricetulus Griseus Expression_system_common: Chinese Hamster Expression_system_taxid: 10029
Molecule: Antithrombin-III Chain: I Synonym: Atiii, Pro0309 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Serpinc1, At3 Expression_system: Cricetulus Griseus Expression_system_common: Chinese Hamster Expression_system_taxid: 10029
symmetry	Space Group: P 21 21 21	R_factor 0.208 R_Free 0.245
crystal cell	length a length b length c angle alpha angle beta angle gamma 88.409 88.404 117.218 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	BMA, FUC, GU0, GU1, GU2, GU3, GU4, GU5, GU6, GU8, GU9, MAN, MPD, NAG	enzyme	Hydrolase E.C.3.4.21.5 BRENDA
related structures	by homologous chain: 1ID5, 1JVQ, 1RD3, 1UVT
Gene Ontology	Chain Function Process Component H I L
Primary reference	Structure of the antithrombin-thrombin-heparin ternary complex reveals the antithrombotic mechanism of heparin., Li W, Johnson DJ, Esmon CT, Huntington JA, Nat Struct Mol Biol 2004 Sep;11(9):857-62. Epub 2004 Aug 15. PMID:15311269

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (136 Kb) [Save to disk] Biological Unit Coordinates (1tb6.pdb1.gz) 127 Kb LPC: Ligand-Protein Contacts for 1TB6 CSU: Contacts of Structural Units for 1TB6 Likely Quarternary Molecular Structure file(s) for 1TB6 Structure Factors (241 Kb) Retrieve 1TB6 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1TB6 from S2C, [Save to disk] Re-refined 1tb6 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1TB6 in 3D

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Visual 3D analysis of 1TB6

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1TB6, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1tb6i_, region I [Jmol] [rasmolscript] [script source]     - Domain d1tb6.1, 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: [1tb6_I] [1tb6_H] [1tb6] [1tb6_L] SWISS-PROT database: [P01008] [P00734] Domain organization of [ANT3_HUMAN] [THRB_HUMAN] by SWISSPFAM Domains found in 1TB6: [SERPIN] [Tryp_SPc ] by SMART

Other resources with information on 1TB6

Community annotation for 1TB6 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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