Which amino acid(s) have (a) the fewest number of codons? (b) the greatest number of codons? Given that out of the 64 codons of mRNA, 61 codify amino acids that form polypeptide chains. What are the functions of the three remaining codons? Determine the ...
Since the structure and function of proteins are determined by the kinds of amino acids used to make it and how they are arranged, how come the amino acid sequence of PrP^C and PrP^{Sc} are the same, when they have very different functions and do not have How are RNA and DNA ...
In frames 1 and 2, the codons in the asORF are shifted towards the \({5}^{{\prime} }\) end of the sense ORF by one and two nucleotide positions, respectively. Thus in frames 1 and 2, the sequence of an antisense codon is determined by two partially overlapping sense codons (di...
MIT researchers have found that the Tau protein, linked to neurodegenerative diseases, forms harmful filaments more easily when its ends are cut off, and that its flexibility contributes to the varied shapes of these filaments. They’ve identified a sequence of amino acids that could be ...
Key unknowns in chemotaxis are how the motor drives both CCW and CW rotation, how response regulators affect rotation and how torque transfers from the stator to the flagellum. To help inform on these controversies, we determined the structures of the S. enterica serovar typhimurium combined MS-...
Peptides and proteins are chiral molecules with their structure determined by the composition and configuration of the amino acids constituting them. Natural amino acids (except glycine) display two chiral types (l- and d-enantiomers). For example, the presence of octopine, a derivative of l-关键...
If you are trying to heal a tooth, considering limiting sugars in your diet as these food particles get into the tooth crevices and actually initiate decay. Likewise, you should eliminate foods high in phytic acid – a mineral blocker and enzyme inhibitor typically found in grains, seeds, ...
Transfer RNAs (tRNA) are the RNAs that “read” the genetic code and translate it into a sequence ofamino acidsto make a protein. The addition of a chemical tag—a methyl sulfur group—to a particular location on some tRNAs improves their ability to translate messenger RNA into prot...
How many amino acids are involved in protein synthesis? A polypeptide consist of how many strings of amino acids? What would be the anticodon of the tRNA that recognizes this codon 5'-UUA-3'. What amino acid would What is the function of 3 nucleotide base sequences? (a) anti-codon (...
How many nucleotides are found in DNA? If the portion of DNA to be transcribed has 66 bases, how many amino acids will the resulting protein have? Explain. A DNA sequence is 1500 nucleotides long. Answer the following questions: A) How many amino acids does this sequence code for? B) ...