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.
R-group Hydrocarbon Neutral Acid or base where the COOH is understood to be the carboxyl group shown above. There are 20 amino acids which make up the proteins, distinguished by the R-group. The simplest of the amino acids, glycine, has just H as an R-group.Amino acids are the structural elements from which proteins are built. When amino acids bond to each other, it is done in the form of an amide, making a connection which is called a peptide linkage.here are 20 amino acids which make up the proteins, distinguished by the R-group. The simplest of the amino acids, glycine, has just H as an R-group. Amino acids are the structural elements from which proteins are built.