4OMK	Transport Protein	date	Jan 27, 2014
title	Crystal Structure Of Spf Bound To Squalene
authors	M.Christen, M.J.Marcaida, C.Lamprakis, M.Cascella, A.Stocker
compound		source
Molecule: Sec14-Like Protein 2 Chain: A, B Fragment: Unp Residues 1-275 Synonym: Alpha-Tocopherol-Associated Protein, Tap, Htap, Sq Transfer Protein, Supernatant Protein Factor, Spf; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: C22orf6, Kiaa1186, Kiaa1658, Sec14l2 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Lemo21 (De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28a
symmetry	Space Group: P 1 21 1	R_factor 0.148 R_Free 0.174
crystal cell	length a length b length c angle alpha angle beta angle gamma 71.270 73.540 94.230 90.00 96.88 90.00
method	X-Ray Diffraction	resolution	1.75 Å
ligand	CL, IPA, SO4, SQL	enzyme
Primary reference	Structural insights on cholesterol endosynthesis: Binding of squalene and 2,3-oxidosqualene to supernatant protein factor., Christen M, Marcaida MJ, Lamprakis C, Aeschimann W, Vaithilingam J, Schneider P, Hilbert M, Schneider G, Cascella M, Stocker A, J Struct Biol. 2015 Jun;190(3):261-70. doi: 10.1016/j.jsb.2015.05.001. Epub 2015 , May 16. PMID:25987292

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (206 Kb) [Save to disk] Biological Unit Coordinates (4omk.pdb1.gz) 101 Kb Biological Unit Coordinates (4omk.pdb2.gz) 101 Kb LPC: Ligand-Protein Contacts for 4OMK CSU: Contacts of Structural Units for 4OMK Structure Factors (5002 Kb) Retrieve 4OMK in mmCIF format [Save to disk] Re-refined 4omk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 4OMK 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 4OMK

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 4OMK, from MSDmotif at EBI Fold representative 4omk from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [4omk_A] [4omk_B] [4omk] SWISS-PROT database: Domain organization of by SWISSPFAM Domains found in 4OMK: [CRAL_TRIO_N] [SEC14 ] by SMART

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