Phe

no- Calculation of ε: Trp: 3 x 5600 = 16800 + Tyr: 6 x 1420= 8520 + Phe 1x197 = 25517 M-1 cm-1 0.57= 22517 c (1) c=.000022338 mol/ml c=( .000022338/2438)/ml = 9.1624 x 10 -6

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you have neglected the Phe in your calculation, didn't you?

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So let me write out the entire question, I want to see if you guys get the same answer as me. When a pure peptide containing 3 Trp, 6 Tyr, and 1 Phe is placed in a UV/Vis spectrometer, the absorbance measured is 0.57. If there is 1mL of solution in a 1cm path-length cuvette, calculate the approximate ...

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the definitions seem fine to me. The primary structure is like Asp-Gly-Glu-His-Gly-Phe blah, blah the secondary structure is like: DGEHGF (the sequence from above in 1-letter code) HH..EE (where H means helix and E means the beta sheet, I think it's marked E) However, ...

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... genetic markers and are sensitive to streptomycin or sodium azide as indicated. F- strain LAN100 F- thi -, trp -, his -, met -, arg -, thr -, phe -, pro-, str r, azi r These mutations confer the following phenotypes on the strains: Genotype Phenotype thi - Thi- cannot synthesise vitamin B1 ...

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