Tagged Questions
4
votes
1answer
85 views
Why are 3 nucleotides used as codons for amino-acid mapping in DNA?
DNA is made of 4 unique nucleotides. When coding for a protein, a sequence of 3 nucleotides is used to code for each amino acid. Why are codons 3 nucleotides in length?
A related question can be ...
0
votes
0answers
42 views
Why aren't D-amino acids used in proteins? [duplicate]
Possible Duplicate:
Why are amino acids in biology homochiral?
Why are only L-amino acids used in protein construction, and not D-amino acids?
7
votes
2answers
148 views
How to compute properties of peptides ?
I have been tasked with writing a program for computing properties of a give set of peptides. These peptides are given as 1-letter amino acid sequences and I need to compute the following :
Length ...
1
vote
2answers
226 views
How are proteins formed?
Somewhere, I have read that we need to consume proteins to make amino acids to make new proteins. What does it suggest? How do we make proteins from proteins?
2
votes
0answers
44 views
Are there examples of PTMs that add different chemical groups (and mass) to different amino acids?
I'm talking about this type of post-translational modifications. What I'm interested in is not whether some modifications can only occur on specific amino acids (that's clear), but if the nomenclature ...
