Answers are grounded in this paper and cite their sources.
Freeze-fracture of Acholeplasma laidlawii membranes from cells incubated in the presence of puromycin or omission of amino acids reveals a decrease in the number of particles between 50 and 100 angstroms in the hydrophobic fracture plane, which strongly suggests that these particles are protein. Additional evidence indicates that they may be involved in substrate transport.
No takes yet. Share an insight, caveat, or question.
Tourtellotte et al. (1973) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: