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.
For lysine this group is called the epsilon amino group (click 1). In arginine itâs the guanidinium group and for histidine itâs the imidazole group. Remember these group names and you will remember the structures of the basic amino acids.Click to go on.Epsilon amino Serine,Threonine, Cysteine and Methionine Start with serine.n arginine itâs the guanidinium group and for histidine itâs the imidazole group. Remember these group names and you will remember the structures of the basic amino acids. Click to go on. Epsilon amino Serine,Threonine, Cysteine and Methionine Start with serine.