The average estimated cash rent was $202 per acre on top quality land, $161 per acre on average quality land, and $124 per acre on poor quality land. This was an increase in rental rates of 2.0% for top quality land, 1.9% for average quality land, and 2.5% for poor quality land.
R-Group. In solution it is the nature of the amino acid R-groups that dictate structure-function relationships of peptides and proteins.
Amino acids are molecules containing an amine group(NH 3), a carboxylic acid group(R-C=O-OH) and a side-chain(usually denoted as R) that varies between different amino acids.The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen.he amino acids in an Î± helix are arranged in a right-handed helical structure where each amino acid residue corresponds to a 100Â° turn in the helix (i.e., the helix has 3.6 residues per turn), and a translation of 1.5 A (Ã¥.0 15) nm along the helical. axis