6AOD

FXIa antibody complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 

wwPDB Validation 3D Report Full Report



Literature

Structural Basis for Activity and Specificity of an Anticoagulant Anti-FXIa Monoclonal Antibody and a Reversal Agent.

Ely, L.K.Lolicato, M.David, T.Lowe, K.Kim, Y.C.Samuel, D.Bessette, P.Garcia, J.L.Mikita, T.Minor, D.L.Coughlin, S.R.

(2018) Structure 26: 187-198.e4

  • DOI: 10.1016/j.str.2017.12.010
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Coagulation factor XIa is a candidate target for anticoagulants that better separate antithrombotic efficacy from bleeding risk. We report a co-crystal structure of the FXIa protease domain with DEF, a human monoclonal antibody that blocks FXIa funct ...

    Coagulation factor XIa is a candidate target for anticoagulants that better separate antithrombotic efficacy from bleeding risk. We report a co-crystal structure of the FXIa protease domain with DEF, a human monoclonal antibody that blocks FXIa function and prevents thrombosis in animal models without detectable increased bleeding. The light chain of DEF occludes the FXIa S1 subsite and active site, while the heavy chain provides electrostatic interactions with the surface of FXIa. The structure accounts for the specificity of DEF for FXIa over its zymogen and related proteases, its active-site-dependent binding, and its ability to inhibit substrate cleavage. The inactive FXIa protease domain used to obtain the DEF-FXIa crystal structure reversed anticoagulant activity of DEF in plasma and in vivo and the activity of a small-molecule FXIa active-site inhibitor in vitro. DEF and this reversal agent for FXIa active-site inhibitors may help support clinical development of FXIa-targeting anticoagulants.


    Organizational Affiliation

    Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143, USA. Electronic address: shaun.coughlin@ucsf.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FXIa Antibody FAB Light ChainA214Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
FXIa Antibody FAB Heavy ChainB229Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Coagulation factor XIC245Homo sapiensMutation(s): 4 
Gene Names: F11
EC: 3.4.21.27
Find proteins for P03951 (Homo sapiens)
Explore P03951 
Go to UniProtKB:  P03951
NIH Common Fund Data Resources
PHAROS  P03951
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
PO4
Query on PO4

Download CCD File 
B, C
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B, C
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CO
Query on CO

Download CCD File 
B, C
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 136.127α = 90
b = 136.127β = 90
c = 175.956γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata scaling
Cootmodel building
XDSdata processing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-03-14
    Type: Initial release