Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 29.23 kDa 
• Atom Count: 1695 
• Residue Count: 198 
• Unique protein chains: 2

1LX5

Crystal Structure of the BMP7/ActRII Extracellular Domain Complex

• DOI: 10.2210/pdb1LX5/pdb

• Classification: GROWTH FACTOR/GROWTH FACTOR RECEPTOR
• Organism(s): Homo sapiens, Mus musculus
• Expression System: Cricetulus griseus, Komagataella pastoris
• Mutation(s): No 


• Deposited: 2002-06-04 Released: 2003-04-01 
• Deposition Author(s): Greenwald, J., Groppe, J., Kwiatkowski, W., Choe, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.279 
• R-Value Work: 0.238 
• R-Value Observed: 0.240 

Literature

The BMP7/ActRII Extracellular Domain Complex Provides New Insights into the Cooperative Nature of Receptor Assembly

Greenwald, J., Groppe, J., Gray, P., Wiater, E., Kwiatkowski, W., Vale, W., Choe, S.

(2003) Mol Cell 11: 605-617

• PubMed: 12667445 
• DOI: 10.1016/s1097-2765(03)00094-7
• Primary Citation of Related Structures:  
  1LX5, 1LXI


• PubMed Abstract: 
  

Activins and bone morphogenetic proteins (BMPs) elicit diverse biological responses by signaling through two pairs of structurally related type I and type II receptors. Here we report the crystal structure of BMP7 in complex with the extracellular domain (ECD) of the activin type II receptor. Our structure produces a compelling four-receptor model, revealing that the types I and II receptor ECDs make no direct contacts. Nevertheless, we find that truncated receptors lacking their cytoplasmic domain retain the ability to cooperatively assemble in the cell membrane. Also, the affinity of BMP7 for its low-affinity type I receptor ECD increases 5-fold in the presence of its type II receptor ECD. Taken together, our results provide a view of the ligand-mediated cooperative assembly of BMP and activin receptors that does not rely on receptor-receptor contacts.

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Organizational Affiliation: 

Structural Biology Laboratory, The Salk Institute, La Jolla, CA 92037, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
bone morphogenetic protein 7	A	139	Homo sapiens	Mutation(s): 0  Gene Names: BMP7, OP1
Find proteins for P18075 (Homo sapiens) Explore P18075  Go to UniProtKB:  P18075
NIH Common Fund Data Resources
PHAROS:  P18075 GTEx:  ENSG00000101144

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Activin Type II Receptor	B	102	Mus musculus	Mutation(s): 0  Gene Names: Acvr2, Acvr2a EC: 2.7.11.30
Find proteins for P27038 (Mus musculus) Explore P27038  Go to UniProtKB:  P27038
NIH Common Fund Data Resources
IMPC:  MGI:102806

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-4)][alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C	6		N-Glycosylation

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	B	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.279 
• R-Value Work: 0.238 
• R-Value Observed: 0.240 
• Space Group: P 6₂ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 140.92	α = 90
b = 140.92	β = 90
c = 90.81	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data collection
TRUNCATE	data reduction
MLPHARE	phasing
REFMAC	refinement
HKL-2000	data reduction
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-06-04 
• Released Date: 2003-04-01 
Deposition Author(s): Greenwald, J., Groppe, J., Kwiatkowski, W., Choe, S.

Revision History 

• Version 1.0: 2003-04-01
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2015-01-21
  Changes: Refinement description
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary