Abstract
In HeLa cells deprived of valine, histidine, or methionine initiation of protein synthesis decreases rapidly and disaggregation of polyribosomes also occurs. The mechanism of inhibition does not seem to involve the supply of RNA in the cell, and thus it differs from the initiation of inhibition at elevated temperatures. Polyribosomes rapidly form again if the missing amino acid is restored, even in the presence of actinomycin D.
MeSH Terms
Amino Acids/metabolism
Autoradiography
Carbon Isotopes
Cell Fractionation
Centrifugation, Density Gradient
Culture Media
Dactinomycin/pharmacology
HeLa Cells/metabolism
Histidine/metabolism
Hot Temperature
Humans
Kinetics
Leucine/metabolism
Methionine/metabolism
Peptide Chain Elongation, Translational
Peptide Chain Initiation, Translational
Protein Biosynthesis
RNA, Ribosomal/biosynthesis
Ribosomes/metabolism
Time Factors
Tritium
Uridine/metabolism
Valine/metabolism
Chemicals
Amino Acids
Carbon Isotopes
Culture Media
RNA, Ribosomal
Tritium
Dactinomycin
Histidine
Methionine
Leucine
Valine
Uridine
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Vaughan M H
Pawlowski P J
Forchhammer J
References (17)
17 references, click to expand
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