1BRC	Complex(Proteinase Inhibitor)	date	Dec 17, 1992
title	Relocating A Negative Charge In The Binding Pocket Of Trypsin
authors	J.J.Perona, R.J.Fletterick
compound		source
Molecule: Trypsin Chain: E Ec: 3.4.21.4 Engineered: Yes		Organism_scientific: Rattus Norvegicus Organism_common: Norway Rat Organism_taxid: 10116 Expression_system: Unidentified Expression_system_taxid: 32644
Molecule: Amyloid Beta-Protein Precursor Inhibitor Domain (Appi); Chain: I Engineered: Yes
symmetry	Space Group: P 32 2 1	R_factor 0.168 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 93.100 93.100 62.500 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand		enzyme	Hydrolase E.C.3.4.21.4 BRENDA
related structures	by homologous chain: 1AMH, 1CA0, 1K1L
Gene Ontology	Chain Function Process Component E serine-type endopeptidase ac... calcium ion binding protein binding peptidase activity serine-type peptidase activi... hydrolase activity metal ion binding proteolysis response to nutrient digestion collagen catabolic process cellular_component extracellular region extracellular space
Primary reference	Relocating a negative charge in the binding pocket of trypsin., Perona JJ, Tsu CA, McGrath ME, Craik CS, Fletterick RJ, J Mol Biol 1993 Apr 5;230(3):934-49. PMID:8478942

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (50 Kb) [Save to disk] Biological Unit Coordinates (1brc.pdb1.gz) 46 Kb CSU: Contacts of Structural Units for 1BRC Likely Quarternary Molecular Structure file(s) for 1BRC Retrieve 1BRC in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1BRC from S2C, [Save to disk]

View 1BRC 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 1BRC

Cartoon representation from PDB Cartoon Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1BRC, from MSDmotif at EBI Genome occurence of 1BRC's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1brce_, region E [Jmol] [rasmolscript] [script source]     - Domain d1brci_, region I [Jmol] [rasmolscript] [script source] Fold representative 1brc 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: [1brc_E] [1brc_I] SWISS-PROT database: [P05067] [P00763] Belongs to the amyloid -protein peptide (app) family according to TCDB. Domain organization of [A4_HUMAN] [TRY2_RAT] by SWISSPFAM Domains found in 1BRC: [KU] [Tryp_SPc ] by SMART Alignments of the sequence of 1BRC with the sequences similar proteins can be viewed for 1BRC's classification [A4_HUMAN] [TRY2_RAT] 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] [TRY2_RAT] at ProtoMap. Click on the Cluster number.

Other resources with information on 1BRC

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

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