3UNS	Hydrolase Hydrolase Inhibitor	date	Nov 16, 2011
title	Bovine Trypsin Variant X(Triplephe227) In Complex With Small Inhibitor
authors	A.Tziridis, P.Neumann, P.Kolenko, M.T.Stubbs
compound		source
Molecule: Cationic Trypsin Chain: A Synonym: Beta-Trypsin, Alpha-Trypsin Chain 1, Alpha-Trypsin Ec: 3.4.21.4 Engineered: Yes Mutation: Yes		Organism_scientific: Bos Taurus Organism_common: Bovine Organism_taxid: 9913 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet3a
symmetry	Space Group: P 21 21 21	R_factor 0.175 R_Free 0.228
crystal cell	length a length b length c angle alpha angle beta angle gamma 54.274 57.183 66.885 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	ANH, CA, GOL, SO4	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Correlating structure and ligand affinity in drug discovery: a cautionary tale involving second shell residues., Tziridis A, Rauh D, Neumann P, Kolenko P, Menzel A, Brauer U, Ursel C, Steinmetzer P, Sturzebecher J, Schweinitz A, Steinmetzer T, Stubbs MT, Biol Chem. 2014 Jul 1;395(7-8):891-903. doi: 10.1515/hsz-2014-0158. PMID:25003390

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (45 Kb) [Save to disk] Biological Unit Coordinates (3uns.pdb1.gz) 41 Kb LPC: Ligand-Protein Contacts for 3UNS CSU: Contacts of Structural Units for 3UNS Structure Factors (102 Kb) Retrieve 3UNS in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3UNS from S2C, [Save to disk] Re-refined 3uns structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3UNS 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 3UNS

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 3UNS, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3uns_A] [3uns] SWISS-PROT database: Domain organization of by SWISSPFAM Domain found in 3UNS: [Tryp_SPc ] by SMART

Other resources with information on 3UNS

Community annotation for 3UNS at PDBWiki (http://pdbwiki.org)

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