5KWY	Transport Protein	date	Jul 19, 2016
title	Structure Of Human Npc1 Middle Lumenal Domain Bound To Npc2
authors	X.Li
compound		source
Molecule: Niemann-Pick C1 Protein Chain: A, B Fragment: Unp Residues 374-620 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Npc1 Expression_system: Bacteria Expression_system_taxid: 2 Expression_system_cell_line: Bl21(De3)
Molecule: Epididymal Secretory Protein E1 Chain: C, D Fragment: Unp Residues 20-151 Synonym: Human Epididymis-Specific Protein 1,He1,Niemann-Pi Type C2 Protein; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Npc2, He1 Expression_system: Homo Sapiens Expression_system_taxid: 9606
symmetry	Space Group: C 2 2 21	R_factor 0.194 R_Free 0.249
crystal cell	length a length b length c angle alpha angle beta angle gamma 98.956 109.686 154.560 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.41 Å
ligand	C3S, NAG	enzyme
Gene Ontology	Chain Function Process Component D, C intermembrane cholesterol tr...
Primary reference	Clues to the mechanism of cholesterol transfer from the structure of NPC1 middle lumenal domain bound to NPC2., Li X, Saha P, Li J, Blobel G, Pfeffer SR, Proc Natl Acad Sci U S A. 2016 Sep 6;113(36):10079-84. doi:, 10.1073/pnas.1611956113. Epub 2016 Aug 22. PMID:27551080

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (246 Kb) [Save to disk] Biological Unit Coordinates (5kwy.pdb1.gz) 236 Kb LPC: Ligand-Protein Contacts for 5KWY CSU: Contacts of Structural Units for 5KWY Structure Factors (646 Kb) Retrieve 5KWY in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 5KWY from S2C, [Save to disk] Re-refined 5kwy structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 5KWY 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 5KWY

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

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [5kwy] [5kwy_C] [5kwy_A] [5kwy_B] [5kwy_D] SWISS-PROT database: Domain organization of by SWISSPFAM Domain found in 5KWY: [ML ] by SMART

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