mrna processing

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12 Terms

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Introns

Non coding dna, allows for genetic diversity through alternative splicing

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Exons

Coding dna, codes for proteins

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Splicing

Spliceosomes (big protein) will cut introns out and stitch exons together

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Alternative splicing

Different combination of exons can be stitched together, some can be skipped, increases protein diversity

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Pre-mRNA

The raw mRNA that comes from transcription, contains introns and exons, not ready for translation

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Mature mRNA

Fully processed mRNA with cap and tail, splicing

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Poly a tail

String of adenines added to the 3 end, protects rna from degradation

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Guanine cap

Guanine added to the 5 end of the pre mRNA , protects from degradation

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