An iron binding protein, isolated from guinea pig intestinal mucosa, was compared to guinea pig transferrin. Both had a molecular weight of approximately 80,000. The intestinal iron-binding protein consisted of 2 subunits of equal molecular weight; transferrin had no subunits. Transferrin showed an absorbance peak at 470 nm; the intestinal iron-binding protein had no visible absorbance but did have a peak at 336 nm. Electron spin resonance spectra of the two proteins dfffered. Significant differences on amino acid analysis were also identified.
|Original language||English (US)|
|Number of pages||7|
|Journal||Biochemical and Biophysical Research Communications|
|Publication status||Published - May 17 1976|
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology