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Sequence studies of rabbit serum transferrin.

P R Junankar1, H A McKenzie, D C Shaw

  • 1Division of Biochemistry and Molecular Biology, John Curtin School of Medical Research, Australian National University, Canberra, ACT.

Biochemistry International
|January 1, 1990
PubMed
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Researchers determined the sequence of large rabbit serum transferrin fragments using enzymatic and chemical methods. This study assigned 614 residues, refining previous rabbit transferrin sequence data.

Area of Science:

  • Biochemistry
  • Proteomics
  • Molecular Biology

Background:

  • Rabbit serum transferrin is a key iron-binding protein.
  • Accurate protein sequencing is crucial for understanding protein function and evolution.
  • Previous sequence data for rabbit transferrin requires refinement.

Purpose of the Study:

  • To determine the amino acid sequence of large fragments of rabbit serum transferrin.
  • To refine and correct existing rabbit transferrin sequence data.
  • To contribute to a more complete understanding of transferrin structure-function relationships.

Main Methods:

  • Enzymatic digestion of rabbit serum transferrin using subtilisin.
  • Chemical cleavage of rabbit serum transferrin using BNPS-skatole.

Related Experiment Videos

  • Amino acid sequence determination of resulting protein fragments.

    • Main Results:

    • Successfully prepared large fragments of rabbit serum transferrin.
    • Assigned 273 residues for the N-terminal lobe and 267 residues for the C-terminal lobe.
    • A total of 614 out of approximately 679 residues of rabbit transferrin have now been assigned.
    • Identified and corrected discrepancies in previously published sequence data.

    Conclusions:

    • The study provides a more accurate and extensive sequence for rabbit serum transferrin.
    • The refined sequence data will aid in future studies of transferrin's biological roles.
    • This work highlights the importance of rigorous sequence verification in protein research.