1XN2	Hydrolase Hydrolase Inhibitor	date	Oct 04, 2004
title	New Substrate Binding Pockets For Beta-Secretase.
authors	R.T.Turner Iii, L.Hong, G.Koelsch, A.K.Ghosh, J.Tang
compound		source
Molecule: Beta-Secretase 1 Chain: A, B, C, D Fragment: Catalytic Domain Of Beta-Secretase Synonym: Beta-Site App Cleaving Enzyme 1, Beta-Site Amyloid Protein Cleaving Enzyme 1, Aspartyl Protease 2, Asp 2, Asp2 Membrane-Associated Aspartic Protease 2, Memapsin-2; Ec: 3.4.23.46 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Bace1, Bace Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11a
Molecule: Om03-4 Chain: E, F, G, H Engineered: Yes Other_details: Peptidic Inhibitor For Memapsin2		Synthetic: Yes
symmetry	Space Group: P 1 21 1	R_factor 0.193 R_Free 0.220
crystal cell	length a length b length c angle alpha angle beta angle gamma 86.223 130.784 88.744 90.00 97.71 90.00
method	X-Ray Diffraction	resolution	1.90 Å
ligand	1OL	enzyme	Hydrolase E.C.3.4.23.46 BRENDA
related structures	by homologous chain: 1FKN, 1SGZ
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	Structural locations and functional roles of new subsites S5, S6, and S7 in memapsin 2 (beta-secretase)., Turner RT 3rd, Hong L, Koelsch G, Ghosh AK, Tang J, Biochemistry 2005 Jan 11;44(1):105-12. PMID:15628850

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (269 Kb) [Save to disk] Biological Unit Coordinates (1xn2.pdb1.gz) 69 Kb Biological Unit Coordinates (1xn2.pdb2.gz) 70 Kb Biological Unit Coordinates (1xn2.pdb3.gz) 70 Kb Biological Unit Coordinates (1xn2.pdb4.gz) 70 Kb LPC: Ligand-Protein Contacts for 1XN2 CSU: Contacts of Structural Units for 1XN2 Likely Quarternary Molecular Structure file(s) for 1XN2 Retrieve 1XN2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1XN2 from S2C, [Save to disk]

View 1XN2 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 1XN2

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1XN2, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1xn2_E] [1xn2_F] [1xn2_D] [1xn2] [1xn2_H] [1xn2_A] [1xn2_B] [1xn2_C] [1xn2_G] 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 1XN2

Community annotation for 1XN2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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