Abstract
Immunoreactive gastric inhibitory polypeptide (IR-GIP) from human and porcine intestine was quantified by radioimmunoassay and the molecular forms characterised by gel permeation and reverse-phase high pressure liquid chromatography (HPLC). Gel filtration revealed two major immunoreactive peaks corresponding to the previously described 5-kDa and 8-kDa molecular forms, which appeared similar in both species. Isocratic reverse-phase HPLC revealed that the major immunoreactive GIP peak (5-kDa) in the human tissue eluted earlier than the corresponding porcine molecular form, indicating the latter to be less hydrophobic. These findings suggest significant species differences between human and porcine GIP.
Original language | English |
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Pages (from-to) | 125-128 |
Number of pages | 4 |
Journal | FEBS Letters |
Volume | 168 |
Issue number | 1 |
DOIs | |
Publication status | Published - Mar 12 1984 |
Externally published | Yes |
Keywords
- Gastric inhibitory polypeptide
- Gel filtration
- Glucose-dependent insulinotropic peptide
- Immunoreactive GIP
- Molecular form
- Reverse-phase HPLC
- Species difference
ASJC Scopus subject areas
- Biophysics
- Structural Biology
- Biochemistry
- Molecular Biology
- Genetics
- Cell Biology