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

Organism_scientific: Bos Taurus
Organism_common: Bovine
Organism_taxid: 9913
Organ: Pancreas
Tissue: Glandular
Cell: Acinar Cells
symmetry Space Group: P 1 21 1
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 Diffractionresolution 0.93 Å
ligand ACT, CA enzyme Hydrolase E.C. BRENDA
note 2XTT is a representative structure

Primary referenceThe 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] (141 Kb) [Save to disk]
  • Biological Unit Coordinates (2xtt.pdb1.gz) 130 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
  • 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 2XTT, from MSDmotif at EBI
  • Fold representative 2xtt from FSSP and Dali (Families of Structurally Similar Proteins)
  • 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)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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