5HNS

Structure of glycosylated NPC1 luminal domain C

• PDB DOI: https://doi.org/10.2210/pdb5HNS/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2016-01-18 Released: 2016-02-10 
• Deposition Author(s): Zhao, Y., Ren, J., Harlos, K., Stuart, D.I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.45 Å
• R-Value Free: 0.238 
• R-Value Work: 0.224 
• R-Value Observed: 0.225 

Literature

Structure of glycosylated NPC1 luminal domain C reveals insights into NPC2 and Ebola virus interactions.

Zhao, Y., Ren, J., Harlos, K., Stuart, D.I.

(2016) FEBS Lett 590: 605-612

• PubMed: 26846330 
• DOI: https://doi.org/10.1002/1873-3468.12089
• Primary Citation of Related Structures:  
  5HNS


• PubMed Abstract: 
  

  Niemann-pick type C1 (NPC1) is an endo/lysosomal membrane protein involved in intracellular cholesterol trafficking, and its luminal domain C is an essential endosomal receptor for Ebola and Marburg viruses. We have determined the crystal structure of glycosylated NPC1 luminal domain C and find all seven possible sites are glycosylated. Mapping the disease mutations onto the glycosylated structure reveals a potential binding face for NPC2. Knowledge-based docking of NPC1 onto Ebola viral glycoprotein and sequence analysis of filovirus susceptible and refractory species reveals four critical residues, H418, Q421, F502 and F504, some or all of which are likely responsible for the species-specific susceptibility to the virus infection.

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Organizational Affiliation: 

Division of Structural Biology, University of Oxford, Headington, Oxford, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 60.73 kDa 
• Atom Count: 3,943 
• Modelled Residue Count: 431 
• Deposited Residue Count: 488 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Niemann-Pick C1 protein	A, B	244	Homo sapiens	Mutation(s): 0  Gene Names: NPC1
UniProt & NIH Common Fund Data Resources
Find proteins for O15118 (Homo sapiens) Explore O15118  Go to UniProtKB:  O15118
PHAROS:  O15118 GTEx:  ENSG00000141458
Glycosylation
Glycosylation Sites: 5		Go to GlyGen: O15118-1

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C, E, F, G, H	2		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	D	4		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G22573RC GlyCosmos:  G22573RC GlyGen:  G22573RC

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	I	5		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G22768VO GlyCosmos:  G22768VO GlyGen:  G22768VO

Entity ID: 5
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	J	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE GlyCosmos:  G15407YE GlyGen:  G15407YE

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	K [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
SCN	L [auth A], M [auth A], N [auth B], O [auth B]	THIOCYANATE ION C N S ZMZDMBWJUHKJPS-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.45 Å
• R-Value Free: 0.238 
• R-Value Work: 0.224 
• R-Value Observed: 0.225 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 87.89	α = 90
b = 115.91	β = 90
c = 147.4	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
Coot	model building
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-02-10 
Deposition Author(s): Zhao, Y., Ren, J., Harlos, K., Stuart, D.I.

Revision History  

• Version 1.0: 2016-02-10
  Type: Initial release
  
• Version 1.1: 2016-03-02
  Changes: Database references
• Version 1.2: 2016-03-16
  Changes: Database references
• Version 1.3: 2019-10-16
  Changes: Data collection
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Source and taxonomy, Structure summary
• Version 2.1: 2024-10-09
  Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary