2XTT	Hydrolase	date	Oct 12, 2010
title	Bovine Trypsin In Complex With Evolutionary Enhanced Schisto Gregaria Protease Inhibitor 1 (Sgpi-1-P02)
authors	W.Y.Wahlgren, G.Pal, J.Kardos, P.Porrogi, B.Szenthe, A.Patthy, L.G G.Katona
compound		source
Molecule: Protease Inhibitor Sgpi-1 Chain: A Fragment: Residues 20-54 Synonym: Protease Inhibitor Sgpi-1, Schistocerca Gregaria T Inhibitor, Protease Inhibitor Sgpi-2, Schistocerca Gregaria Chymotrypsin Inhibitor, Sgti, Sgci; Engineered: Yes Other_details: In Vitro Evolved Sequence With The Following		Synthetic: Yes Organism_scientific: Schistocerca Gregaria Organism_common: Desert Locust Organism_taxid: 7010
Molecule: Cationic Trypsin Chain: B Synonym: Beta-Trypsin, Alpha-Trypsin Chain 1, Alpha-Trypsin Ec: 3.4.21.4		Organism_scientific: Bos Taurus Organism_common: Bovine Organism_taxid: 9913 Organ: Pancreas Tissue: Glandular Cell: Acinar Cells
symmetry	Space Group: P 1 21 1	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 36.910 63.610 43.870 90.00 93.85 90.00
method	X-Ray Diffraction	resolution	0.93 Å
ligand	ACT, CA	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
note	2XTT is a representative structure
Gene Ontology	Chain Function Process Component A B
Primary reference	The catalytic aspartate is protonated in the Michaelis complex formed between trypsin and an in vitro evolved substrate-like inhibitor: a refined mechanism of serine protease action., Wahlgren WY, Pal G, Kardos J, Porrogi P, Szenthe B, Patthy A, Graf L, Katona G, J Biol Chem. 2010 Nov 21. PMID:21097875

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (137 Kb) [Save to disk] Biological Unit Coordinates (2xtt.pdb1.gz) 126 Kb LPC: Ligand-Protein Contacts for 2XTT CSU: Contacts of Structural Units for 2XTT Structure Factors (5241 Kb) Retrieve 2XTT in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2XTT from S2C, [Save to disk] Re-refined 2xtt structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2XTT 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 2XTT

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 2XTT, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2xtt] [2xtt_B] [2xtt_A] SWISS-PROT database: Domain organization of by SWISSPFAM Domain found in 2XTT: [Tryp_SPc ] by SMART

Other resources with information on 2XTT

Community annotation for 2XTT at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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