Mid%202%20Fall%202007

Mid%202%20Fall%202007 - 1 of 2 BIS 102 Fall, 2007 K. Hilt...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 of 2 BIS 102 Name__________________________________________________ Fall, 2007 Last First K. Hilt Second Midterm Score (100): ___________ Equations: pH = pK a + log {[b]/[a]} K a = x 2 /(y-x) K b = x 2 / (y-x) pH = (pK a 1 + pK a 2 )/2 (K a )(K b ) = 1 x 10 -14 F = (q 1 q 2 ) / ε r 2 G = H - T S Amino acid pK a ’s: α -carboxyl group (2.1), α -amino group (9.6) side chains: D (3.9) E (4.2) H (6.0) C (8.3) Y (10.1) K (10.5) R (12.5) Oligopeptide pK a ’s: C-terminal carboxyl group (3.6), N-terminal amino group (7.4) 1. (20 pts.) Amino acid analysis of protein “Z” gave the following experimental results: Amino Acid Number of Residues in Protein “Z” Amino Acid Number of Residues in Protein “Z” A 13 B 3 G 12 M 5 P 5 H 6 Z 3 C 17 K 24 V 24 R 20 S 12 L 23 T 14 Y 12 F 13 What is the net charge (to the nearest 0.01) of protein “Z” at pH 9.4 ? Put your answer on the following line: _______________. To receive credit, you must show all of your work on the back of this page.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/11/2008 for the course BIS 102 taught by Professor Hilt during the Summer '08 term at UC Davis.

Page1 / 2

Mid%202%20Fall%202007 - 1 of 2 BIS 102 Fall, 2007 K. Hilt...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online