例句與造句

1. Ricin a chain ( rta ) is an active chain and has specific n - glycosidase activity , which excises a specific adenine residue ( a4324 in rat ) from a highly conserved loop of 26 or 28s rrna in 60s ribosomal subunits . this cleavage of adenine can lead to the disruption of ribosomal function , thereby , inhibits the protein synthesis and then cause the death of cells
   A鏈?zhǔn)腔钚枣?，具有n -糖苷酶活性，可催化切斷真核生物60s亞基28srrna中第4324位腺嘌呤與核糖分子之間的糖苷鍵，使其脫去一個(gè)腺嘌呤，使核糖體60s亞基失活，從而抑制蛋白質(zhì)的合成。
2. It's difficult to find active chain in a sentence. 用active chain造句挺難的