Structure - activity relationship study on artificial CXCR4 ligands possessing the cyclic pentapeptide scaffold: the exploration of amino acid residues of pentapeptides by substitutions of several aromatic amino acids. (thno.org)
The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code. (sciencedaily.com)
Comparison of amino acid residues at these positions among various mammalian melanopsins suggests that melanopsins in apes including humans have acquired and kept two residues destabilizing the bond with retinal in molecular evolution. (sciencedaily.com)