3J2Q

Model of membrane-bound factor VIII organized in 2D crystals


Experimental Data Snapshot

  • Method: ELECTRON CRYSTALLOGRAPHY

wwPDB Validation 3D Report Full Report



Literature

Domain organization of membrane-bound factor VIII.

Stoilova-McPhie, S.Lynch, G.C.Ludtke, S.Pettitt, B.M.

(2013) Biopolymers 99: 448-459

  • DOI: 10.1002/bip.22199
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Factor VIII (FVIII) is the blood coagulation protein which when defective or deficient causes for hemophilia A, a severe hereditary bleeding disorder. Activated FVIII (FVIIIa) is the cofactor to the serine protease factor IXa (FIXa) within the membra ...

    Factor VIII (FVIII) is the blood coagulation protein which when defective or deficient causes for hemophilia A, a severe hereditary bleeding disorder. Activated FVIII (FVIIIa) is the cofactor to the serine protease factor IXa (FIXa) within the membrane-bound Tenase complex, responsible for amplifying its proteolytic activity more than 100,000 times, necessary for normal clot formation. FVIII is composed of two noncovalently linked peptide chains: a light chain (LC) holding the membrane interaction sites and a heavy chain (HC) holding the main FIXa interaction sites. The interplay between the light and heavy chains (HCs) in the membrane-bound state is critical for the biological efficiency of FVIII. Here, we present our cryo-electron microscopy (EM) and structure analysis studies of human FVIII-LC, when helically assembled onto negatively charged single lipid bilayer nanotubes. The resolved FVIII-LC membrane-bound structure supports aspects of our previously proposed FVIII structure from membrane-bound two-dimensional (2D) crystals, such as only the C2 domain interacts directly with the membrane. The LC is oriented differently in the FVIII membrane-bound helical and 2D crystal structures based on EM data, and the existing X-ray structures. This flexibility of the FVIII-LC domain organization in different states is discussed in the light of the FVIIIa-FIXa complex assembly and function.


    Related Citations: 
    • 3-Dimensional structure of membrane-bound coagulation factor VIII: modeling of the factor VIII heterodimer within a 3-dimensional density map derived by electron crystallography.
      Stoilova-McPhie, S., Villoutreix, B.O., Mertens, K., Kemball-Cook, G., Holzenburg, A.
      (2002) Blood 99: 1215

    Organizational Affiliation

    Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX, USA. svmcphie@utmb.edu



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Coagulation factor VIII light chainB684Homo sapiensMutation(s): 0 
Gene Names: F8F8C
Find proteins for P00451 (Homo sapiens)
Explore P00451 
Go to UniProtKB:  P00451
NIH Common Fund Data Resources
PHAROS  P00451
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Coagulation factor VIII heavy chainA754Homo sapiensMutation(s): 0 
Gene Names: F8F8C
Find proteins for P00451 (Homo sapiens)
Explore P00451 
Go to UniProtKB:  P00451
NIH Common Fund Data Resources
PHAROS  P00451
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Oligosaccharides
Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C
2 N-Glycosylation
Entity ID: 4
MoleculeChainsChain Length2D Diagram Glycosylation
alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
D
4 N/A
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
B
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
CU
Query on CU

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A, B
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

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A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81α = 67
b = 71β = 60
c = 100γ = 65

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-11
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Author supporting evidence, Data collection, Database references, Derived calculations, Structure summary