@@ Ribosomes, the agents of protein synthesis, consist rnof roughly equal amounts of RNA (rRNA) and protein rn(r-protein). Knowledge of the ribosome and its function rnmainly comes from the extensive work on 70S bacterial rnribosomes. There are 21 proteins in the small (30S)rnsubunit and 30 in the large (50S) subunit in E. coil rirnbosomes. The 80S eukaryotic ribosomes are more comrnplex than the bacterial ones and contain at least 30 prornteins in the small (40S) subunit and 40 in the large (60rnS) subunit. These r-proteins are named S1 to S30 and rnL1 to L40 according to whether they arise from the small rnor large subunit, and to their mobility in gels. In plants,rnseveral ribosomal protein genes and/or cDNAs have rnbeen isolated, such as the small subunit proteins S 11,rnS13, S14, S16, and S19 and the large subunit proteins rnL2, L7, L17, and L27. Here we report the r-protein rnS25 cDNA, Arps25, from Amaranthus cruentus L.
展开▼
