3J2Q

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


Experimental Data Snapshot

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Resolution: 15 Å
  • Aggregation State: 2D ARRAY 
  • Reconstruction Method: CRYSTALLOGRAPHY 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

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
  • Primary Citation of Related Structures:  

  • 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: 1
MoleculeChainsSequence LengthOrganismDetails
Coagulation factor VIII heavy chain
A
754Homo sapiensMutation(s): 0 
Gene Names: F8 (F8C)
Find proteins for P00451 (Homo sapiens)
Go to Gene View: F8
Go to UniProtKB:  P00451
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Coagulation factor VIII light chain
B
684Homo sapiensMutation(s): 0 
Gene Names: F8 (F8C)
Find proteins for P00451 (Homo sapiens)
Go to Gene View: F8
Go to UniProtKB:  P00451
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

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Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MAN
Query on MAN

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Download CCD File 
B
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
BMA
Query on BMA

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Download CCD File 
B
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
CU
Query on CU

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Download CCD File 
A, B
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

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A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Resolution: 15 Å
  • Aggregation State: 2D ARRAY 
  • Reconstruction Method: CRYSTALLOGRAPHY 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-11
    Type: Initial release