1LDT	Complex (Hydrolase Inhibitor)	date	May 15, 1997
title	Complex Of Leech-Derived Tryptase Inhibitor With Porcine Try
authors	M.T.Stubbs
compound		source
Molecule: Trypsin Chain: T Ec: 3.4.21.4		Organism_scientific: Sus Scrofa Organism_common: Pig Organism_taxid: 9823 Organ: Bean
Molecule: Tryptase Inhibitor Chain: L Synonym: Ldti Engineered: Yes Other_details: Leech-Derived Tryptase Inhibitor		Organism_scientific: Hirudo Medicinalis Organism_common: Medicinal Leech Organism_taxid: 6421 Expression_system: Saccharomyces Cerevisiae Expression_system_common: Baker'S Yeast Expression_system_taxid: 4932 Expression_system_strain: S-78
symmetry	Space Group: P 43 21 2	R_factor 0.197 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 63.400 63.400 131.200 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.90 Å
ligand	CA	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
related structures	by homologous chain: 1Z7K, 3BTG, 3BTT
Gene Ontology	Chain Function Process Component L serine-type endopeptidase in... T
Primary reference	The three-dimensional structure of recombinant leech-derived tryptase inhibitor in complex with trypsin. Implications for the structure of human mast cell tryptase and its inhibition., Stubbs MT, Morenweiser R, Sturzebecher J, Bauer M, Bode W, Huber R, Piechottka GP, Matschiner G, Sommerhoff CP, Fritz H, Auerswald EA, J Biol Chem 1997 Aug 8;272(32):19931-7. PMID:9242660

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (48 Kb) [Save to disk] Biological Unit Coordinates (1ldt.pdb1.gz) 43 Kb LPC: Ligand-Protein Contacts for 1LDT CSU: Contacts of Structural Units for 1LDT Likely Quarternary Molecular Structure file(s) for 1LDT Structure Factors (154 Kb) Retrieve 1LDT in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1LDT from S2C, [Save to disk] Re-refined 1ldt structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1LDT 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 1LDT

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 1LDT, from MSDmotif at EBI Genome occurence of 1LDT's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ldtl_, region L [Jmol] [rasmolscript] [script source]     - Domain d1ldtt_, region T [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: [1ldt_L] [1ldt] [1ldt_T] SWISS-PROT database: [P80424] [P00761] Domain organization of [LDTI_HIRME] [TRYP_PIG] by SWISSPFAM Domains found in 1LDT: [KAZAL] [Tryp_SPc ] by SMART

Other resources with information on 1LDT

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

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