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how can DNA....

Genetics as it applies to evolution, molecular biology, and medical aspects.

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Postby MrMistery » Mon Sep 05, 2005 5:55 pm

Actually Victor if you want to get technical rRNA does not have that role in protein synthesis. It is just one of the building blocks of ribosoms. The mechanism is extremely complex, but basically the ribosom asembles the aminoacids brought by tRNA. tRNA knows what aminoacid to bring because of the nodoc(anticodon) that recognises a specific aminoacid.
This forum will soon turn to indonesia-online if you guys keep flooding the forum :D
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Postby victor » Tue Sep 06, 2005 9:40 am

Yup, I think I've made a little mistake back then... :oops:
The mechanism is like this:
we are talking about translation which classified into 3 parts. Those are initiation, elongation and termination.
When Initiation begins, mRNA start to send codons to tRNA while tRNA bring the amino-acid which is complementary to the mRNA codon. Because in order to form a complementary pair between mRNA and tRNA then if mRNA contains codon so tRNA must've contained nodoc or anticodon. Ow, one more thing about initiation, the first tRNA must've UAC nodoc with metionine amino-acid as a 'start' point.

Then, these codon and nodoc form a complementary bases while amino-acids from each tRNA will be paired with other tRNA's amino-acid to form proteins through peptide or disulphide chain. (it's elongation)

When it comes to termination, some mRNA will form 'stop' codon which are UAG, UGA and UAA. In order to response those stop codons, tRNA will form AUC, ACU, and AUU nodoc and bring some termination signals.

Now go to ribosome...ribosome is a place provider for those pairments between mRNA and tRNA. Ribosome contains of big molecule for tRNA to place its nodoc and small molecule for mRNA to place their codon. When the termination has ended, the ribosome will be broken apart become big molecule and small molecule.

For you Andrew, I think this forum soon will be flooded with us (Gadjah Mada University students biology faculty)... :lol: so, have you open application for a mod yet? :lol:

Hope this helps
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A: They have all the solutions.
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