Amino acids have two significant characteristics - their -C-C-N- polypeptide-chain monomer and their site for the attachment of a side chain - called the -R group.
While millions of possible -R groups exist, only 20 of these have passed - literally - the biochemical fitness test to be used in Biochemistry [and 2, but only 2, that have special functions].
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Amino acids such as ornithine, citrulline, and taurine are not typically used directly for protein synthesis. They may instead have roles in other biological processes such as urea cycle metabolism or antioxidant activity.
The messenger RNA (mRNA) strand contains the codes for the amino acids that make up a protein. During protein synthesis, the mRNA strand is used by ribosomes to read the genetic information and assemble the corresponding amino acids.
The pattern used in protein synthesis is called the genetic code. It consists of sequences of three nucleotide bases (codons) in mRNA that correspond to specific amino acids. Ribosomes decode these codons to assemble amino acids into a protein according to the instructions carried by the mRNA.
what kind of molecules contain the insructions for ordering amino acid in protein
Transcription: mRNA is copied from a DNA molecule. Translation: The mRNA molecule then attaches to ribosomes. tRNA carrying amino acids come and attach to Codons on the mRNA. The amino acids bond to form a chain and a protein is formed.
The limiting amino acid is the essential amino acid that is available in the lowest quantity relative to the body's needs for protein synthesis. When one essential amino acid is deficient, it limits the rate of protein synthesis, even if all other essential amino acids are present in sufficient amounts. This can impact overall protein quality and growth.