1LT9

Crystal Structure of Recombinant Human Fibrinogen Fragment D


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

2.8 A Crystal Structures of Recombinant Fibrinogen Fragment D with and without Two Peptide Ligands: GHRP Binding to the "b" Site Disrupts Its Nearby Calcium-binding Site.

Kostelansky, M.S.Betts, L.Gorkun, O.V.Lord, S.T.

(2002) Biochemistry 41: 12124-12132

  • Primary Citation of Related Structures:  1LTJ

  • PubMed Abstract: 
  • We report two crystal structures, each at a resolution of 2.8 A, of recombinant human fibrinogen fragment D (rfD) in the absence and presence of peptide ligands. The bound ligands, Gly-Pro-Arg-Pro-amide and Gly-His-Arg-Pro-amide, mimic the interactio ...

    We report two crystal structures, each at a resolution of 2.8 A, of recombinant human fibrinogen fragment D (rfD) in the absence and presence of peptide ligands. The bound ligands, Gly-Pro-Arg-Pro-amide and Gly-His-Arg-Pro-amide, mimic the interactions of the thrombin exposed polymerization sites, "A" and "B", respectively. This report is the first to describe the structure of fragment D in the presence of both peptide ligands. The structures reveal that recombinant fibrinogen is nearly identical to the plasma protein but with minor changes, like the addition of a proximal fucose to the carbohydrate linked to residue betaGln364, and slightly different relative positions of the beta- and gamma-modules. Of major interest in our structures is that a previously identified calcium site in plasma fibrinogen is absent when Gly-His-Arg-Pro-amide is bound. The peptide-dependent loss of this calcium site may have significant biological implications that are further discussed. These structures provide a foundation for the detailed structural analysis of variant recombinant fibrinogens that were used to identify critical functional residues within fragment D.


    Organizational Affiliation

    Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fibrinogen alpha/alpha-E chain
A, D
66Homo sapiensGene Names: FGA
Find proteins for P02671 (Homo sapiens)
Go to Gene View: FGA
Go to UniProtKB:  P02671
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fibrinogen beta chain
B, E
313Homo sapiensGene Names: FGB
Find proteins for P02675 (Homo sapiens)
Go to Gene View: FGB
Go to UniProtKB:  P02675
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fibrinogen gamma chain
C, F
311Homo sapiensGene Names: FGG
Find proteins for P02679 (Homo sapiens)
Go to Gene View: FGG
Go to UniProtKB:  P02679
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
B, C, E, F
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
B, E
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 88.727α = 90.00
b = 94.511β = 90.00
c = 227.111γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-11-06
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance