1FKN	Hydrolase Hydrolase Inhibitor	date	Aug 09, 2000
title	Structure Of Beta-Secretase Complexed With Inhibitor
authors	L.Hong, G.Koelsch, X.Lin, S.Wu, S.Terzyan, A.Ghosh, X.C.Zhang, J.Ta
compound		source
Molecule: Memapsin 2 Chain: A, B Fragment: Protease Domain Synonym: Beta-Secretase Ec: 3.4.23.46 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11a
Molecule: Inhibitor Chain: C, D Engineered: Yes		Synthetic: Yes
symmetry	Space Group: P 1 21 1	R_factor 0.180 R_Free 0.224
crystal cell	length a length b length c angle alpha angle beta angle gamma 53.652 85.853 109.237 90.00 101.36 90.00
method	X-Ray Diffraction	resolution	1.90 Å
ligand	1OL	enzyme	Hydrolase E.C.3.4.23.46 BRENDA
note	1FKN (Molecule of the Month:pdb79, pdb115)
related structures	by homologous chain: 1TQF, 1XN2
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structure of the protease domain of memapsin 2 (beta-secretase) complexed with inhibitor., Hong L, Koelsch G, Lin X, Wu S, Terzyan S, Ghosh AK, Zhang XC, Tang J, Science 2000 Oct 6;290(5489):150-3. PMID:11021803

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (138 Kb) [Save to disk] Biological Unit Coordinates (1fkn.pdb1.gz) 68 Kb Biological Unit Coordinates (1fkn.pdb2.gz) 68 Kb LPC: Ligand-Protein Contacts for 1FKN CSU: Contacts of Structural Units for 1FKN Likely Quarternary Molecular Structure file(s) for 1FKN Structure Factors (980 Kb) Retrieve 1FKN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1FKN from S2C, [Save to disk] Re-refined 1fkn structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1FKN 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 1FKN

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 1FKN, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1fkna_, region A [Jmol] [rasmolscript] [script source]     - Domain d1fknb_, region B [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: [1fkn_E] [1fkn_C] [1fkn_F] [1fkn] [1fkn_D] [1fkn_B] [1fkn_A] SWISS-PROT database: [P56817] Belongs to the β-amyloid cleaving enzyme (bace1) family according to TCDB. Domain organization of [BACE1_HUMAN] by SWISSPFAM

Other resources with information on 1FKN

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

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