Amino acids calculations

Expected Probabilities of Amino Acids Calculated with Yk = 20 in Eq. (4) ... 

Peptide pf-value Molecular weight No. of amino acids Calculated mobility Migration order... 

Prepare a table of R values for the standard amino acids. You should also describe the color of the original ninhydrin spot. Since the colors vary slightly with the amino acids, this aids in the identification of an unknown amino acid. Calculate the R values for the constituent amino acids of the unknown peptide. From these data you should be able to identify the amino acids present in your unknown. 

Amino Acids. The values for the refractive indices and molar refractions of the amino acids calculated from the refractive indices by Lorenz-Lorentz Equations 1 and 2 are recorded in Table I. Values for molar refractions of the aliphatic amino acids are in good agreement with values calculated from atomic refraction factors. However, the molar refractions of tryptophan, tyrosine, phenylalanine, and histidine are larger than those calculated from atomic refraction factors and larger than might be expected from their comparative specific volumes. 

Fig. 9.6. (a) PPC data taken from Lin and coworkers [17] for polar and nonpolar amino acids (calculated with respect to the signal obtained from glycine), (b) Similar studies obtained by us [18] for nonpolar amino acids using a host-guest approach... 

Amino acid calculation 0.4 mmol Xaa-resin x 2.5 molar excess = Weight factor (mmol Boc Xaa> 1.0... 

An example of the spectrum from the HPLC is shown in Figure 3.4.1, and the resulting amino acids calculated using a standard HPLC program are shown in Table 3.4.3. 

Considering only the 20 standard amino acids, calculate the total number of possible tetrapeptides. 

Figure 3.15. Partial molar volumes of the 20 amino acids calculated by the three different versions of the RISM theory. and denote the values theoretically...

Includes carbohydrates, amino acids. Calculated as ammonium stearate. 

Andersen UN, Bojesen G. The order of lithium ion affinities for the 20 common alpha-amino acids. Calculation of energy-well depth of ion-bound dimmers. J Chem Soc Perkins Trans. 1997 2 323 7. 

Polarity of the free amino acid, calculated according to Eq. 15). 

Side chain polarity of the free amino acids, calculated as... 

Sample Problem 18.7] The single polypeptide protein chain has 98 amino acids. Calculate the entropy of denaturation per amino acid. 

The resolution factors (Rs) of Dns-amino acids, calculated from original chromatograms, were > 1.2. 

---