title: Nonidentity of the 48,000-dalton protein of mRNA-protein particles and the beta subunit of eukaryotic initiation factor 2.
abstract: The beta subunits of the GTP-dependent initiator methionyl-tRNA-binding protein and the 48,000-dalton protein, which is one of the two major proteins present in isolated mRNA . protein particles, have been shown to share a number of similar structural and mRNA-binding properties. The nonidentity of these two proteins is now established by documentation of differing molecular weights, isoelectric focusing points, and products of protease or cyanogen bromide cleavage.
mesh_terms: D000818:Animals; D004591:Electrophoresis, Polyacrylamide Gel; D046911:Macromolecular Substances; D008970:Molecular Weight; D009698:Nucleoproteins / Q000302:isolation & purification; D010448:Peptide Initiation Factors / Q000302:isolation & purification; D012333:RNA, Messenger / Q000302:isolation & purification; D011817:Rabbits; D012156:Reticulocytes / Q000032:analysis; D012261:Ribonucleoproteins / Q000302:isolation & purification
chemical_list: D046911:Macromolecular Substances; D009698:Nucleoproteins; D010448:Peptide Initiation Factors; D012333:RNA, Messenger; D012261:Ribonucleoproteins