Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.
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ramo
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by ramo » Tue Feb 15, 2005 3:32 am
I have two questions about RNA I would like to ask:
1. Why is uracil used in RNA instead of thyamine?
2. Why does a cell never run out of ribnucleotides? I mean where do they come from besides from introns being recycled?
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chintu
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by chintu » Tue Feb 15, 2005 12:20 pm
For the first :
Thyamine will give more stability for the strand. if RNA had the thymine it aquires more stability this will affect the synthesis of proteins. i think this is the reason.
i cant understand ur second one.
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DevGrp
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by DevGrp » Tue Feb 15, 2005 12:59 pm
Cells turn over their mRNA quite quickly, some mRNAs only last minutes. So I guess cells recyle their ribonucleotides. They can also synthesis fresh ones as required .
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ramo
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by ramo » Tue Feb 15, 2005 8:29 pm
ok i get the first question, but as far as recycling the nucleotides is concerned does the RNA re-enter the nucleus to be recycled after it has been thorugh the ribosomes and made the protein?
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