1SFI	Hydrolase Hydrolase Inhibitor	date	Dec 16, 1998
title	High Resolution Structure Of A Potent, Cyclic Protease Inhib Sunflower Seeds
authors	S.Luckett, R.S.Garcia, J.J.Barker, A.V.Konarev, P.Shewry, A.R.Cla R.L.Brady
compound		source
Molecule: Trypsin Chain: A Ec: 3.4.21.4		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913 Organ: Pancreas
Molecule: Trypsin Inhibitor 1 Chain: I Synonym: Sfti-1 Other_details: Cyclic Peptide		Organism_scientific: Helianthus Annuus Organism_common: Common Sunflower Organism_taxid: 4232 Strain: Sunbred 246 Organ: Seed Tissue: Endosperm
symmetry	Space Group: P 21 21 21	R_factor 0.175 R_Free 0.204
crystal cell	length a length b length c angle alpha angle beta angle gamma 60.610 64.430 70.620 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.65 Å
ligand	CA, SO4	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
related structures	by homologous chain: 1C2G, 1O2J
Gene Ontology	Chain Function Process Component A
Primary reference	High-resolution structure of a potent, cyclic proteinase inhibitor from sunflower seeds., Luckett S, Garcia RS, Barker JJ, Konarev AV, Shewry PR, Clarke AR, Brady RL, J Mol Biol 1999 Jul 9;290(2):525-33. PMID:10390350

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (47 Kb) [Save to disk] Biological Unit Coordinates (1sfi.pdb1.gz) 43 Kb LPC: Ligand-Protein Contacts for 1SFI CSU: Contacts of Structural Units for 1SFI Likely Quarternary Molecular Structure file(s) for 1SFI Retrieve 1SFI in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SFI from S2C, [Save to disk]

View 1SFI 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 1SFI

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1SFI, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1sfia_, region A [Jmol] [rasmolscript] [script source] 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: [1sfi_I] [1sfi_A] [1sfi] SWISS-PROT database: [Q4GWU5] [P00760] Domain organization of [SFTI1_HELAN] [TRY1_BOVIN] by SWISSPFAM Domain found in 1SFI: [Tryp_SPc ] by SMART

Other resources with information on 1SFI

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

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