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第三节 mRNA Processing, hnRNPs and snrNps 一、 hnrNa 二、pre- mRNAS 三、 hnrNP 四、 SnRNPs 五、pre- mRNA processing
第三节 mRNA Processing, hnRNPs and snRNPs 一、 hnRNA 二、 pre-mRNAs 三、 hnRNP 四、 snRNPs 五、pre-mRNA processing
hnrna Eucaryotic rNa Pol Il transcribes a variety of different genes, from snrna genes of 60-300nt to the large antennapedia genes, whose genes can be over 100kb in length. The collection of these products is referred to as heterogeneous nuclear rna (hnRNA) Bi pre- mRNAs These hnrNa are processed to e mRNAs called pre-mRNAS
一、hnRNA Eucaryotic RNA Pol II transcribes a variety of different genes, from snRNA genes of 60-300nt to the large Antennapedia genes, whose genes can be over 100kb in length. The collection of these products is referred to as heterogeneous nuclear RNA (hnRNA) . 二、pre-mRNAs These hnRNA are processed to give mRNAs called pre-mRNAs
hnrnp: hetrogenenous nuclear ribonucleoprotein The hnrNa is rapidly covered in proteins to form hnrnp The proteins involved have been classified as hnrNa proteins A-U These proteins are organized as a tetramer. Three copies of tetramer are combined with a RNa molecule of 600-700nt, called hnrNP particles, each particle has a size of 30-40S
三、hnRNP : hetrogenenous nuclear ribonucleoprotein The hnRNA is rapidly covered in proteins to form hnRNP. The proteins involved have been classified as hnRNA proteins A-U. These proteins are organized as a tetramer. Three copies of tetramer are combined with a RNA molecule of 600-700nt , called hnRNP particles, each particle has a size of 30-40S
The hnrnp protein are thought to help keep the hnrna in a single-stranded form and assist in the various RNa processing reactions
The hnRNP protein are thought to help keep the hnRNA in a single-stranded form and assist in the various RNA processing reactions