Abstract:
:p60src, the transforming protein of Rous sarcoma virus, was found to contain 0.5 to 0.9 mol of total phosphate per mol of polypeptide. The protein is known to be phosphorylated at two sites, a serine in the amino-terminal domain and a tyrosine in the carboxy-terminal domain. Because our indirect analysis suggests that the serine is phosphorylated to approximately twice the extent of the tyrosine, we estimate that p60src contains approximately 0.3 to 0.6 mol of phosphoserine and 0.2 to 0.3 mol of phosphotyrosine per mol of polypeptide. p60src was found to represent approximately 0.02% of the total incorporated radioactivity in Rous sarcoma virus-transformed chick cells labeled with [35S]methionine for 48 h. This corresponds to approximately 500,000 molecules of p60src per cell. Pulse-chase experiments revealed that the half-life of p60src ranged from 2 to 7 h, depending on the strain of virus examined. The P60src of the Schmidt-Ruppin strain was significantly more stable than that of the Prague strain.
journal_name
J Viroljournal_title
Journal of virologyauthors
Sefton BM,Patschinsky T,Berdot C,Hunter T,Elliott Tdoi
10.1128/JVI.41.3.813-820.1982subject
Has Abstractpub_date
1982-03-01 00:00:00pages
813-20issue
3eissn
0022-538Xissn
1098-5514journal_volume
41pub_type
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