2H43

Crystal Structure of Human Fragment D Complexed with Ala-His-Arg-Pro-amide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Differences in Binding Specificity for the Homologous gamma- and beta-Chain "Holes" on Fibrinogen: Exclusive Binding of Ala-His-Arg-Pro-amide by the beta-Chain Hole.

Doolittle, R.F.Chen, A.Pandi, L.

(2006) Biochemistry 45: 13962-13969

  • DOI: 10.1021/bi061219e

  • PubMed Abstract: 
  • The beta-chain amino-terminal sequences of all known mammalian fibrins begin with the sequence Gly-His-Arg-Pro- (GHRP-), but the homologous sequence in chicken fibrin begins with the sequence Ala-His-Arg-Pro- (AHRP-). Nonetheless, chicken fibrinogen ...

    The beta-chain amino-terminal sequences of all known mammalian fibrins begin with the sequence Gly-His-Arg-Pro- (GHRP-), but the homologous sequence in chicken fibrin begins with the sequence Ala-His-Arg-Pro- (AHRP-). Nonetheless, chicken fibrinogen binds the synthetic peptide GHRPam, and a previously reported crystal structure has revealed that the binding is in exact conformance with that observed for the human GHRPam-fragment D complex. We now report that human fibrinogen, which is known not to bind APRP, binds the synthetic peptide AHRPam. Moreover, a crystal structure of AHRPam complexed with fragment D from human fibrinogen shows that AHRPam binds exclusively to the beta-chain hole and, unlike GHRPam, not at all to the homologous gamma-chain hole. The difference can be attributed to the methyl group of the alanine residue clashing with a critical carboxyl group in the gammaC hole but being accommodated in the roomier betaC hole where the equivalent carboxyl is situated more flexibly.


    Organizational Affiliation

    Department of Chemistry and Biochemistry and Division of Biology, University of California at San Diego, La Jolla, California 92093-0314, USA. rdoolittle@ucsd.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fibrinogen alpha chain
A, D
87Homo sapiensMutation(s): 0 
Gene 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
328Homo sapiensMutation(s): 0 
Gene 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
323Homo sapiensMutation(s): 0 
Gene Names: FGG
Find proteins for P02679 (Homo sapiens)
Go to Gene View: FGG
Go to UniProtKB:  P02679
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
GLY-HIS-ARG-PRO-AMIDE peptide ligand
I, J
5N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 3 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
NDG
Query on NDG

Download SDF File 
Download CCD File 
E
2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE
C8 H15 N O6
OVRNDRQMDRJTHS-PVFLNQBWSA-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
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
I, J
NON-POLYMERH2 N

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.251 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 105.000α = 90.00
b = 47.900β = 105.41
c = 171.400γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
ADSCdata collection
AMoREphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-12-05
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance