| Table of half-life of some mRNAs |
|
mRNA species |
Half-life (Hours) |
| Glyeraldehyde 3-P dehydrogenase | 75-130 |
| Fatty acid synthetase | 48-96 |
| β-actin (nonmuscle) | 60 |
| Cytochrome P450 | 36 |
| Pyruvate kinase | 30 |
| Glu-6-Phosphate dehydrogenase | 15 |
| Insulin receptor | 9 |
| Tubulin | 4 -12 |
| Thymidine kinase | 2.6 |
| Glucocorticord receptor | 2.3 |
| Tyrosine aminotransferase | 2.0 |
| Heat Shock Proteins (70hsp) | 2.0 |
| Ornithine decarboxylase | 0.5 |
| most bacterial mRNA's | < 3.0 minutes |
Longevity of some Proteins
|
Protein Species |
Longevity |
| crystallin lens protein | life of organism (90 yr+) |
| hemoglobin | life of RBC (3 month humans) |
| Steroid hormone receptor | short lived (hours) |
| Casein (milk protein) | short lived (hours) |
| HSP 70 proteins | short lived (hours) |
| cyclins (cell division) | short lived (hours) |
| transcription factors | short lived (hours) |
| back |