6MF2

Improved Model of Human Coagulation Factor VIII

• PDB DOI:  https://doi.org/10.2210/pdb6MF2/pdb

• Classification: BLOOD CLOTTING
• Organism(s): Homo sapiens
• Expression System: Cricetulus griseus
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2018-09-08 Released: 2019-09-11 
• Deposition Author(s): Smith, I.W., Spiegel, P.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.61 Å
• R-Value Free: 0.284 
• R-Value Work: 0.252 
• R-Value Observed: 0.254 

Literature

The 3.2 angstrom structure of a bioengineered variant of blood coagulation factor VIII indicates two conformations of the C2 domain.

Smith, I.W., d'Aquino, A.E., Coyle, C.W., Fedanov, A., Parker, E.T., Denning, G., Spencer, H.T., Lollar, P., Doering, C.B., Spiegel Jr., P.C.

(2020) J Thromb Haemost 18: 57-69

• PubMed: 31454152 
• DOI: https://doi.org/10.1111/jth.14621
• Primary Citation of Related Structures:  
  6MF0, 6MF2


• PubMed Abstract: 
  

  Coagulation factor VIII represents one of the oldest protein-based therapeutics, serving as an effective hemophilia A treatment for half a century. Optimal treatment consists of repeated intravenous infusions of blood coagulation factor VIII (FVIII) per week for life. Despite overall treatment success, significant limitations remain, including treatment invasiveness, duration, immunogenicity, and cost. These issues have inspired research into the development of bioengineered FVIII products and gene therapies.

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Organizational Affiliation: 

Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Emory University, Atlanta, Georgia.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 175.84 kDa 
• Atom Count: 10,035 
• Modelled Residue Count: 1,222 
• Deposited Residue Count: 1,512 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Coagulation factor VIII	A	1,512	Homo sapiens	Mutation(s): 0  Gene Names: F8, F8C Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P00451 (Homo sapiens) Explore P00451  Go to UniProtKB:  P00451
PHAROS:  P00451

Oligosaccharides

Help

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

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	F [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CU1	G [auth A]	COPPER (I) ION Cu VMQMZMRVKUZKQL-UHFFFAOYSA-N
CA	E [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.61 Å
• R-Value Free: 0.284 
• R-Value Work: 0.252 
• R-Value Observed: 0.254 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 134.569	α = 90
b = 134.569	β = 90
c = 359.496	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing
HKL-2000	data collection

Structure Validation

Entry History 

Deposition Data

• Released Date: 2019-09-11 
Deposition Author(s): Smith, I.W., Spiegel, P.C.

Revision History  

• Version 1.0: 2019-09-11
  Type: Initial release
  
• Version 1.1: 2020-01-15
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary