6U66

Structure of the trimeric globular domain of Adiponectin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.99 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Mapping and engineering the interaction between adiponectin and T-cadherin.

Pascolutti, R.Erlandson, S.C.Burri, D.J.Zheng, S.Kruse, A.C.

(2020) J Biol Chem 295: 2749-2759

  • DOI: 10.1074/jbc.RA119.010970
  • Primary Citation of Related Structures:  
    6U66, 6U6N

  • PubMed Abstract: 
  • Adiponectin is a highly abundant protein hormone secreted by adipose tissue. It elicits diverse biological responses, including anti-diabetic, anti-inflammatory, anti-tumor, and anti-atherosclerotic effects. Adiponectin consists of a globular domain ...

    Adiponectin is a highly abundant protein hormone secreted by adipose tissue. It elicits diverse biological responses, including anti-diabetic, anti-inflammatory, anti-tumor, and anti-atherosclerotic effects. Adiponectin consists of a globular domain and a collagen-like domain, and it occurs in three major oligomeric forms that self-assemble: trimers, hexamers, and high-molecular-weight oligomers. Adiponectin has been reported to bind to two seven-transmembrane domain receptors, AdipoR1 and AdipoR2, as well as to the protein T-cadherin, which is highly expressed in the cardiovascular system and binds only the high-molecular-weight form of adiponectin. The molecular mechanisms underlying this specificity remain unclear. Here we used a combination of X-ray crystallography and protein engineering to define the details of adiponectin's interaction with T-cadherin. We found that T-cadherin binds to the globular domain of adiponectin, relying on structural stabilization of this domain by bound metal ions. Moreover, we show that the adiponectin globular domain can be engineered to enhance its binding affinity for T-cadherin. These results help to define the molecular basis for the interaction between adiponectin and T-cadherin, and our engineered globular domain variants may be useful tools for further investigating adiponectin's functions.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts 02115 andrew_kruse@hms.harvard.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AdiponectinABC142Homo sapiensMutation(s): 0 
Gene Names: ADIPOQACDCACRP30APM1GBP28
Find proteins for Q15848 (Homo sapiens)
Explore Q15848 
Go to UniProtKB:  Q15848
NIH Common Fund Data Resources
PHAROS  Q15848
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download CCD File 
A, B, C
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.99 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.166 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.923α = 116.83
b = 49.635β = 100.89
c = 50.306γ = 104.92
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesDP5OD021345

Revision History 

  • Version 1.0: 2020-01-22
    Type: Initial release
  • Version 1.1: 2020-03-11
    Changes: Database references