| Literature DB >> 8366133 |
N Leitinger1, J Wesierska-Gadek.
Abstract
ADP-ribosylation reactions in nucleoli of exponentially growing HeLa cells were studied. Isolated nuclei or nucleoli were labeled with 32P-NAD; then the nucleolar proteins were analyzed by 1-dimensional and 2-dimensional polyacrylamide gel electrophoresis (PAGE) and modified proteins were detected by autoradiography. The labeled nucleolar proteins were also chromatographically fractionated on DEAE-cellulose. Electrophoretic analysis of total nucleolar and chromatographically purified proteins revealed that besides nuclear ADP-ribosyltransferase and histones two characteristic nucleolar phosphoproteins numatrin/B23 and nucleolin/C23 were modified by ADP-ribosylation.Entities:
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Year: 1993 PMID: 8366133 DOI: 10.1002/jcb.240520207
Source DB: PubMed Journal: J Cell Biochem ISSN: 0730-2312 Impact factor: 4.429