NMR Structure of Sarcolipin

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 16 
  • Selection Criteria: structures with the least restraint violations 

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This is version 1.4 of the entry. See complete history


Structure and orientation of sarcolipin in lipid environments.

Mascioni, A.Karim, C.Barany, G.Thomas, D.D.Veglia, G.

(2002) Biochemistry 41: 475-482

  • DOI: https://doi.org/10.1021/bi011243m
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Sarcolipin (SLN) is a 31 amino acid integral membrane protein that regulates Ca-ATPase activity in skeletal muscle. Here, we report the three-dimensional structure and topology of synthetic SLN in lipid environments, as determined by solution and solid-state NMR spectroscopy. 2D solution NMR experiments were performed on SLN solubilized in sodium dodecyl sulfate (SDS) micelles. We found that SLN adopts a highly defined alpha-helical conformation from F9 through R27, with a backbone RMSD of 0.65 A and a side chain RMSD of 1.66 A. The N-terminus (M1 through L8) and the C-terminus (S28 through Y31) are mostly unstructured. The orientation of the SLN was determined using one-dimensional (15)N NMR solid-state spectroscopy. The protein was incorporated into phospholipid bilayers prepared from a mixture of 1,2-dioleoyl-sn-glycero-3-phosphocholine and 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine. The (15)N chemical shift solid-state spectra from selectively labeled SLN samples indicate that SLN orients perpendicularly to the plane of the membrane bilayers. These results support the proposed mechanism of Ca-ATPase regulation of SLN via protein-protein intramembranous interactions between the highly conserved transmembrane domains of the Ca-ATPase and the conserved transmembrane domain of SLN.

  • Organizational Affiliation

    Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sarcolipin31N/AMutation(s): 0 
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for O00631 (Homo sapiens)
Explore O00631 
Go to UniProtKB:  O00631
PHAROS:  O00631
GTEx:  ENSG00000170290 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO00631
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 16 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-02-13
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection