SPLICEOSOME
\splˈa͡ɪsɪˌə͡ʊsə͡ʊm], \splˈaɪsɪˌəʊsəʊm], \s_p_l_ˈaɪ_s_ɪ__ˌəʊ_s_əʊ_m]\
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Organelles in which the splicing and excision reactions that remove introns from precursor messenger RNA molecules occur. One component of a spliceosome is five small nuclear RNA molecules (U1, U2, U4, U5, U6) that, working in conjunction with proteins, help to fold pieces of RNA into the right shapes and later splice them into the message.
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Word of the day
tinctura quininae ammoniata
- A preparation made by dissolving quinin sulphate in alcohol [Br. Ph.].