3IXK	Hydrolase	date	Sep 04, 2009
title	Potent Beta-Secretase 1 Inhibitor
authors	N.Borkakoti, J.D.Lindberg, S.Nystrom
compound		source
Molecule: Beta-Secretase 1 Chain: A, B, C Fragment: Unp Residues 42-446 Synonym: Beta-Site Amyloid Precursor Protein Cleaving Enzym Site App Cleaving Enzyme 1, Membrane-Associated Aspartic Pr Memapsin-2, Aspartyl Protease 2, Asp 2, Asp2; Ec: 3.4.23.46 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Bace1, Bace, Kiaa1149 Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11a
symmetry	Space Group: P 1 21 1	R_factor 0.229 R_Free 0.282
crystal cell	length a length b length c angle alpha angle beta angle gamma 81.838 103.075 100.499 90.00 103.32 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	929 BindingDB	enzyme	Hydrolase E.C.3.4.23.46 BRENDA
Gene Ontology	Chain Function Process Component A, C, B
Primary reference	Synthesis of potent BACE-1 inhibitors incorporating a hydroxyethylene isostere as central core., Wangsell F, Gustafsson K, Kvarnstrom I, Borkakoti N, Edlund M, Jansson K, Lindberg J, Hallberg A, Rosenquist A, Samuelsson B, Eur J Med Chem. 2010 Mar;45(3):870-82. Epub 2009 Nov 12. PMID:20036448

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (187 Kb) [Save to disk] Biological Unit Coordinates (3ixk.pdb1.gz) 63 Kb Biological Unit Coordinates (3ixk.pdb2.gz) 63 Kb Biological Unit Coordinates (3ixk.pdb3.gz) 63 Kb LPC: Ligand-Protein Contacts for 3IXK CSU: Contacts of Structural Units for 3IXK Structure Factors (433 Kb) Retrieve 3IXK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3IXK from S2C, [Save to disk] Re-refined 3ixk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3IXK 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 3IXK

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 3IXK, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3ixk_A] [3ixk] [3ixk_C] [3ixk_B] SWISS-PROT database: Domain organization of by SWISSPFAM

Other resources with information on 3IXK

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

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