1N4K	Membrane Protein	date	Oct 31, 2002
title	Crystal Structure Of The Inositol 1,4,5-Trisphosphate Recept Core In Complex With Ip3
authors	I.Bosanac, J.R.Alattia, T.K.Mal, J.Chan, S.Talarico, F.K.Tong, K.I F.Yoshikawa, T.Furuichi, M.Iwai, T.Michikawa, K.Mikoshiba, M.Iku
compound		source
Molecule: Inositol 1,4,5-Trisphosphate Receptor Type 1 Chain: A Fragment: Ip3-Binding Core Synonym: Type 1 Inositol 1,4,5- Trisphosphate Receptor, Typ Receptor, Ip3 Receptor Isoform 1, Insp3r1, Inositol 1,4,5- Trisphosphate-Binding Protein P400, Purkinje Cell Protein 1 Engineered: Yes		Organism_scientific: Mus Musculus Organism_common: House Mouse Organism_taxid: 10090 Gene: Itpr1 Or Insp3r Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21-Codonplus(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pgex-2t
symmetry	Space Group: C 2 2 21	R_factor 0.224 R_Free 0.248
crystal cell	length a length b length c angle alpha angle beta angle gamma 44.101 90.420 207.117 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	I3P	enzyme
Gene Ontology	Chain Function Process Component A
Primary reference	Structure of the inositol 1,4,5-trisphosphate receptor binding core in complex with its ligand., Bosanac I, Alattia JR, Mal TK, Chan J, Talarico S, Tong FK, Tong KI, Yoshikawa F, Furuichi T, Iwai M, Michikawa T, Mikoshiba K, Ikura M, Nature 2002 Dec 12;420(6916):696-700. PMID:12442173

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (55 Kb) [Save to disk] Biological Unit Coordinates (1n4k.pdb1.gz) 51 Kb LPC: Ligand-Protein Contacts for 1N4K CSU: Contacts of Structural Units for 1N4K Likely Quarternary Molecular Structure file(s) for 1N4K Retrieve 1N4K in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1N4K from S2C, [Save to disk]

View 1N4K 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 1N4K

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1N4K, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1n4ka2, region A:236-435 [Jmol] [rasmolscript] [script source]     - Domain d1n4ka1, region A:436-602 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1n4k] [1n4k_A] SWISS-PROT database: [P11881] Domain organization of [ITPR1_MOUSE] by SWISSPFAM Domain found in 1N4K: [MIR ] by SMART

Other resources with information on 1N4K

Community annotation for 1N4K at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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