Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 10 
  • Selection Criteria: VIOLATION 

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This is version 1.3 of the entry. See complete history


Effects of glycosylation on the structure and dynamics of eel calcitonin in micelles and lipid bilayers determined by nuclear magnetic resonance spectroscopy.

Hashimoto, Y.Toma, K.Nishikido, J.Yamamoto, K.Haneda, K.Inazu, T.Valentine, K.G.Opella, S.J.

(1999) Biochemistry 38: 8377-8384

  • DOI: https://doi.org/10.1021/bi983018j
  • Primary Citation of Related Structures:  
    1BKU, 1BYV, 1BZB

  • PubMed Abstract: 

    The three-dimensional structures of eel calcitonin (CT) and two glycosylated CT derivatives, [Asn(GlcNAc)3]-CT (CT-GlcNAc) and [Asn(Man6-GlcNAc2)3]-CT (CT-M6), in micelles were determined by solution NMR spectroscopy. The topologies of these peptides associated with oriented lipid bilayers were determined with solid-state NMR. All of the peptides were found to have an identical conformation in micelles characterized by an amphipathic alpha-helix consisting of residues Ser5 through Leu19 followed by an unstructured region at the C-terminus. The overall conformation of the peptide moiety was not affected by the glycosylation. Nevertheless, comparison of the relative exchange rates of the Leu12 amide proton might suggest the possibility that fluctuations of the alpha-helix are reduced by glycosylation. The presence of NOEs between the carbohydrate and the peptide moieties of CT-GlcNAc and CT-M6 and the amide proton chemical shift data suggested that the carbohydrate interacted with the peptide, and this might account for the conformational stabilization of the alpha-helix. Both the unmodified CT and the glycosylated CT were found to have orientations with their helix axes parallel to the plane of the lipid bilayers by solid-state NMR spectroscopy.

  • Organizational Affiliation

    Analytical Research Laboratory, Asahi Chemical Industry Company, Ltd., Fuji, Shizuoka 416-8501, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PROTEIN (CALCITONIN)33Anguilla japonicaMutation(s): 0 
Find proteins for P01262 (Anguilla japonica)
Explore P01262 
Go to UniProtKB:  P01262
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01262
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on NAG

Download Ideal Coordinates CCD File 
B [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 10 
  • Selection Criteria: VIOLATION 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-10-28
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary