2R53

Crystal structure analysis of Bone Morphogenetic Protein-6 variant B2 (B2-BMP-6)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.259 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Type I receptor binding of bone morphogenetic protein 6 is dependent on N-glycosylation of the ligand.

Saremba, S.Nickel, J.Seher, A.Kotzsch, A.Sebald, W.Mueller, T.D.

(2007) Febs J. 275: 172-183

  • DOI: 10.1111/j.1742-4658.2007.06187.x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bone morphogenetic proteins (BMPs), together with transforming growth factor (TGF)-beta and activins/inhibins, constitute the TGF-beta superfamily of ligands. This superfamily is formed by more than 30 structurally related secreted proteins. The crys ...

    Bone morphogenetic proteins (BMPs), together with transforming growth factor (TGF)-beta and activins/inhibins, constitute the TGF-beta superfamily of ligands. This superfamily is formed by more than 30 structurally related secreted proteins. The crystal structure of human BMP-6 was determined to a resolution of 2.1 A; the overall structure is similar to that of other TGF-beta superfamily ligands, e.g. BMP-7. The asymmetric unit contains the full dimeric BMP-6, indicating possible asymmetry between the two monomeric subunits. Indeed, the conformation of several loops differs between both monomers. In particular, the prehelix loop, which plays a crucial role in the type I receptor interactions of BMP-2, adopts two rather different conformations in BMP-6, indicating possible dynamic flexibility of the prehelix loop in its unbound conformation. Flexibility of this loop segment has been discussed as an important feature required for promiscuous binding of different type I receptors to BMPs. Further studies investigating the interaction of BMP-6 with different ectodomains of type I receptors revealed that N-glycosylation at Asn73 of BMP-6 in the wrist epitope is crucial for recognition by the activin receptor type I. In the absence of the carbohydrate moiety, activin receptor type I-mediated signaling of BMP-6 is totally diminished. Thus, flexibility within the binding epitope of BMP-6 and an unusual recognition motif, i.e. an N-glycosylation motif, possibly play an important role in type I receptor specificity of BMP-6.


    Organizational Affiliation

    Lehrstuhl für Physiologische Chemie II, Biozentrum der Universität Würzburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bone morphogenetic protein 6
A, B
116Homo sapiensMutation(s): 0 
Gene Names: BMP6 (VGR)
Find proteins for P22004 (Homo sapiens)
Go to Gene View: BMP6
Go to UniProtKB:  P22004
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MPD
Query on MPD

Download SDF File 
Download CCD File 
A, B
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.259 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 99.780α = 90.00
b = 99.780β = 90.00
c = 86.760γ = 120.00
Software Package:
Software NamePurpose
CNSphasing
XDSdata reduction
XDSdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description