1TAW	Complex (Serine Protease Inhibitor)	date	Dec 19, 1996
title	Bovine Trypsin Complexed To Appi
authors	T.R.Hynes, A.A.Kossiakoff
compound		source
Molecule: Trypsin Chain: A Ec: 3.4.21.4		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913 Organ: Pancreatic
Molecule: Protease Inhibitor Domain Of Alzheimer'S Amyloid Beta-Protein Precursor; Chain: B Fragment: Residues 289 - 342 Of Alzheimer'S Amyloid Beta- Protein Precursor; Synonym: Appi Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Organ: Pancreatic Gene: A4 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: 27c7 Expression_system_plasmid: Pa4g32r Expression_system_gene: A4
symmetry	Space Group: C 1 2 1	R_factor 0.184 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 94.050 49.850 68.800 90.00 96.31 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	CA	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
related structures	by homologous chain: 1AAP, 1CA0, 1EPT, 1QB1
Gene Ontology	Chain Function Process Component A protein binding peptidase activity serine-type peptidase activi... hydrolase activity metal ion binding proteolysis digestion extracellular region extracellular space
Primary reference	Crystal structures of bovine chymotrypsin and trypsin complexed to the inhibitor domain of Alzheimer's amyloid beta-protein precursor (APPI) and basic pancreatic trypsin inhibitor (BPTI): engineering of inhibitors with altered specificities., Scheidig AJ, Hynes TR, Pelletier LA, Wells JA, Kossiakoff AA, Protein Sci 1997 Sep;6(9):1806-24. PMID:9300481

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (49 Kb) [Save to disk] Biological Unit Coordinates (1taw.pdb1.gz) 89 Kb LPC: Ligand-Protein Contacts for 1TAW CSU: Contacts of Structural Units for 1TAW Likely Quarternary Molecular Structure file(s) for 1TAW Structure Factors (142 Kb) Retrieve 1TAW in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1TAW from S2C, [Save to disk] Re-refined 1taw structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1TAW 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 1TAW

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1TAW, from MSDmotif at EBI Genome occurence of 1TAW's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1tawa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1tawb_, region B [Jmol] [rasmolscript] [script source] Fold representative 1taw from FSSP and Dali (Families of Structurally Similar Proteins) 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: [1taw_A] [1taw_B] SWISS-PROT database: [P05067] [P00760] Belongs to the amyloid -protein peptide (app) family according to TCDB. Domain organization of [A4_HUMAN] [TRY1_BOVIN] by SWISSPFAM Domains found in 1TAW: [KU] [Tryp_SPc ] by SMART Alignments of the sequence of 1TAW with the sequences similar proteins can be viewed for 1TAW's classification [A4_HUMAN] [TRY1_BOVIN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [A4_HUMAN] [TRY1_BOVIN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1TAW

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

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