2F91	Hydrolase Hydrolase Inhibitor	date	Dec 05, 2005
title	1.2a Resolution Structure Of A Crayfish Trypsin Complexed Wi Peptide Inhibitor, Sgti
authors	K.Fodor, V.Harmat, C.Hetenyi, J.Kardos, J.Antal, A.Perczel, A.Patt G.Katona, L.Graf
compound		source
Molecule: Hepatopancreas Trypsin Chain: A Ec: 3.4.21.4		Organism_scientific: Pontastacus Leptodactylus Organism_common: Narrow-Clawed Crayfish Organism_taxid: 6717 Tissue: Hepatopancreas
Molecule: Serine Protease Inhibitor III Chain: B Fragment: Protease Inhibitor Sgpi-1, Residues 20-54 Synonym: Schistocerca Gregaria Trypsin Inhibitor, Sgti Engineered: Yes		Synthetic: Yes Other_details: The Protein Was Chemically Synthesized, This Occurs Naturally In Schistocerca Gregaria (Desert Locust)
symmetry	Space Group: P 21 21 21	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 41.283 59.673 97.302 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.20 Å
ligand	CD, CL	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
note	2F91 supersedes 1YR4
Gene Ontology	Chain Function Process Component A B
Primary reference	Enzyme:substrate hydrogen bond shortening during the acylation phase of serine protease catalysis., Fodor K, Harmat V, Neutze R, Szilagyi L, Graf L, Katona G, Biochemistry. 2006 Feb 21;45(7):2114-21. PMID:16475800

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (134 Kb) [Save to disk] Biological Unit Coordinates (2f91.pdb1.gz) 129 Kb LPC: Ligand-Protein Contacts for 2F91 CSU: Contacts of Structural Units for 2F91 Likely Quarternary Molecular Structure file(s) for 2F91 Structure Factors (497 Kb) Retrieve 2F91 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2F91 from S2C, [Save to disk] Re-refined 2f91 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

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Visual 3D analysis of 2F91

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Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2F91, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2f91] [2f91_A] [2f91_B] SWISS-PROT database: [Q52V24] [O46162] Domain organization of [Q52V24_PONLE] [SGP1_SCHGR] by SWISSPFAM Domain found in 2F91: [Tryp_SPc ] by SMART

Other resources with information on 2F91

Community annotation for 2F91 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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