BIS102 Hilt F05 MT1 -no answers

BIS102 Hilt F05 MT1 -no answers - 1 of 4 BIS 102 Fall, 2005...

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1 of 4 BIS 102 Name ________________________________________ Fall, 2005 Last First K. Hilt First Midterm Score (100): ___________ Equations: pH = pK a + log {[b]/[a]} (K a ) (K b ) = 1 x 10 -14 pH = - log [H + ] F = (q 1 q 2 ) / ε r 2 K b = x 2 / (y-x) G = H - T S K a = x 2 /(y - x) pH = (pK a 1 + pK a 2 )/2 Compound pK a ’s Phosphate 2.12, 7.21, 12.32 Tris (protonated form) 8.21 NH 4 + 9.25 Ethanolamine (protonated form) 9.44 Acetic acid 4.76 Amino acid side chains D 3.9 E 4.2 H 6.0 Y 10.1 K 10.5 C 8.3 R 12.5 Amino acid α -carboxyl group 2.1 Amino acid α -amino group 9.6 Oligopeptide N-terminal amino group 7.4 Oligopeptide C-terminal carboxyl group 3.6
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2 of 4 BIS 102 Name ___________________________________________________ 1. The oligopeptide “H-K-Q-E-W-D” was isolated from human blood. (20 pts.) a) Draw the complete structure of this peptide, in the form that would predominate at pH 5. (18 pts.) b) A small aliquot (sample) of the above peptide was treated with 6 N HCl overnight
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This note was uploaded on 10/07/2009 for the course BIS 52192 taught by Professor Enochbaldwin during the Fall '09 term at UC Davis.

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BIS102 Hilt F05 MT1 -no answers - 1 of 4 BIS 102 Fall, 2005...

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