quiz 1 - STUDENTID BioBM331 QUIZ1a 9/5/07

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STUDENT ID BioBM331 QUIZ 1 a 9/5/07 1. (11 pts) Draw the structure of the dipeptide Gln-Glu at pH 7 . Show all atoms explicitly . Label both α and both β carbons. Show the correct form of each ionizable group. 2. (6 pts) Answer the PyMOL questions: a. Print the words COMMAND LINE in a proper place in the large PyMOL window. b . Circle the used to get this image c. Draw a square needed to get this image d. Circle what is shown in this image: Ala Lys Mb Ebola protein antibody(Ab) fragment e. Circle what is shown in this image: 2 AA in an ion pair heme & Lys Ab fragment & HIV f. Circle what is in the large PyMOL window: AA residue from the "Build" menu AA residue, one atom shown as "spheres" Ab fragment AA residue + ion AA residue + "organic" 3. (9 pts) Hemoglobin has a terminal amino and a terminal carboxyl that are next to each other. Estimate the fraction of these NH 3 + - OOC neighbors that could be in an ion-pair bond at the following pH values. Choose the closest value.
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quiz 1 - STUDENTID BioBM331 QUIZ1a 9/5/07

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