Abstract
The two quantitatively predominant nuclear nonhistone polypeptides of the avian erythrocyte comprise a significant portion of the nuclear envelope protein. Each of these two polypeptides can be converted almost completely to homogeneous polymeric species via oxidation of intrinsic sulfhydryl groups by o-phenanthroline cupric ion complex. Major products are two dimeric species arising from each of the approximately 77 000-dalton pair. The larger of the two polypeptides also yields oligomers greater than dimers. These observations extend our earlier solubility and polypeptide cross-linking evidence which indicated that these polypeptides were involved in an oligomeric, proteinaceous nuclear structure. Ultramicroscopic studies from other laboratories indicate that such a structure may function as a nuclear skeleton. The architectural details of the structure now appear to be accessible at the molecular level.
Original language | English (US) |
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Pages (from-to) | 1212-1216 |
Number of pages | 5 |
Journal | Biochemistry |
Volume | 17 |
Issue number | 7 |
DOIs | |
State | Published - Jan 1 1978 |
Externally published | Yes |
ASJC Scopus subject areas
- Biochemistry