1M7L

Solution Structure of the Coiled-Coil Trimerization Domain from Lung Surfactant Protein D


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Solution structure of the coiled-coil trimerization domain from lung surfactant protein D

Kovacs, H.O'Donoghue, S.I.Hoppe, H.-J.Comfort, D.Reid, K.B.M.Campbell, I.D.Nilges, M.

(2002) J Biomol NMR 24: 89-102

  • DOI: https://doi.org/10.1023/a:1020980006628
  • Primary Citation of Related Structures:  
    1M7L

  • PubMed Abstract: 

    Surfactant protein D (SP-D) is one of four known protein components of the pulmonary surfactant lining the lung alveoli. It is involved in immune and allergic responses. SP-D occurs as a tetramer of trimers. Trimerization is thought to be initiated by a coiled coil domain. We have determined the solution structure of a 64-residue peptide encompassing the coiled coil domain of human SP-D. As predicted, the domain forms a triple-helical parallel coiled coil. As with all symmetric oligomers, the structure calculation was complicated by the symmetry degeneracy in the NMR spectra. We used the symmetry-ADR (ambiguous distance restraint) structure calculation method to solve the structure. The results demonstrate that the leucine zipper region of SP-D is an autonomously folded domain. The structure is very similar to the independently determined X-ray crystal structure, differing mainly at a single residue, Tyr248. This residue is completely symmetric in the solution structure, and markedly asymmetric in the crystalline phase. This difference may be functionally important, as it affects the orientation of the antigenic surface presented by SP-D.


  • Organizational Affiliation

    Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Pulmonary surfactant-associated protein D
A, B, C
40Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P35247 (Homo sapiens)
Explore P35247 
Go to UniProtKB:  P35247
PHAROS:  P35247
GTEx:  ENSG00000133661 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP35247
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-11-27
    Type: Initial release
  • Version 1.1: 2008-04-28
    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: 2024-05-29
    Changes: Data collection