3E8L	Hydrolase Inhibitor Hydrolase	date	Aug 20, 2008
title	The Crystal Structure Of The Double-Headed Arrowhead Proteas Inhibitor A In Complex With Two Trypsins
authors	R.Bao, C.H.Jiang, C.W.Chi, S.X.Lin, Y.X.Chen
compound		source
Molecule: Serine Proteinase Inhibitor A Chain: C Fragment: Beta-Trefoil Fold Engineered: Yes		Organism_scientific: Sagittaria Sagittifolia Organism_common: Arrowhead Organism_taxid: 4451 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28
Molecule: Cationic Trypsin Chain: A, B Synonym: Beta-Trypsin Ec: 3.4.21.4		Organism_scientific: Bos Taurus Organism_common: Bovine Organism_taxid: 9913
symmetry	Space Group: C 2 2 21	R_factor 0.194 R_Free 0.245
crystal cell	length a length b length c angle alpha angle beta angle gamma 76.634 110.863 152.991 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.48 Å
ligand	ACT, CA, EDO, GOL, NA, PEG, SO4	enzyme	Hydrolase E.C.3.4.21.4 BRENDA
Gene Ontology	Chain Function Process Component A, B C endopeptidase inhibitor acti...
Primary reference	The ternary structure of the double-headed arrowhead protease inhibitor API-A complexed with two trypsins reveals a novel reactive site conformation., Bao R, Zhou CZ, Jiang C, Lin SX, Chi CW, Chen Y, J Biol Chem. 2009 Sep 25;284(39):26676-84. Epub 2009 Jul 28. PMID:19640842

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (105 Kb) [Save to disk] Biological Unit Coordinates (3e8l.pdb1.gz) 97 Kb LPC: Ligand-Protein Contacts for 3E8L CSU: Contacts of Structural Units for 3E8L Likely Quarternary Molecular Structure file(s) for 3E8L Structure Factors (323 Kb) Retrieve 3E8L in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3E8L from S2C, [Save to disk] Re-refined 3e8l structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

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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 3E8L, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3e8l] [3e8l_B] [3e8l_A] [3e8l_C] SWISS-PROT database: [Q7M1P4] [P00760] Domain organization of [Q7M1P4_SAGSA] [TRY1_BOVIN] by SWISSPFAM Domains found in 3E8L: [STI] [Tryp_SPc ] by SMART

Other resources with information on 3E8L

Community annotation for 3E8L at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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