(April 24, 2019 at 12:13 pm)sdelsolray Wrote: Obviously biological complexity is beyond your understanding, as is the nature of genetic coding. To wit:
Good post. A few added points concerning protein formation:
1) DNA does not directly code for proteins. An inverse copy of one side (always the same side) of a portion of a DNA molecule is made into messenger RNA (mRNA). Next, an inverse copy of that mRNA is made into transcription RNA (tRNA), which, in essence results in a copy of that certain side of the original DNA sequence at issue.
2) 61 of the 64 codons map for a specific amino acid. Some codons map for the same amino acid and three function as stop codes.
3) The tRNA then builds the specific protein to which the codons map.
4) The folding of proteins is a function and property of how the amino acids are sequenced in the polypeptide chain/protein.
5) The "left-handedness" of proteins is due to the state of the tRNA (traced back to the side of the DNA molecule that was used to make mRNA. Had the other side of the DNA molecule been used to make mRNA, proteins would all be "right-handed", and they would have been coded differently.
6) I'm leaving aside the enzymatic chemistry during these processes for now.
Ah.
Re-reading the post now that I'm free-er allows me to better understand it.
I think I have a better udnerstanding of what's going on.
So... I supose my follow up question is.
First the DNA 'Unzips'.
Parts of one length are 'read' and made into RNA.
This RNA in turn is then turned into actual 'productive' RNA?
So.. the original DNA is just zipped back up after wards?
Cheers.
Not at work.