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Exam2 - 1 Biochemistry I(CH 339K Fall 2008 Unique#54715...

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Biochemistry I (CH 339K) Fall 2008 Unique #54715 Professor Adrian Keatinge-Clay Exam #2 September 19, 2008 Do not begin work on this exam until you are instructed to begin. The core values of The University of Texas at Austin are learning, discovery, freedom, leadership, individual opportunity, and responsibility. Each member of the University is expected to uphold these values through integrity, honesty, trust, fairness, and respect toward peers and community. The work that you hand in will be considered to be your own original work prepared without assistance. I will uphold the honor code on this exam. Signed Name: _________________________ Printed Name: _________________________ EID: _______________ 1
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1. True/False. Mark T or F. (26 points) __ Most proline residues are in the trans configuration. __ Globins are in the “all β ” protein structure class. __ Antiparallel β -sheets have a left-handed twist, while parallel β -sheets have a right- handed twist. __ Nuclear magnetic resonance spectroscopy is optimal for proteins > 50 kDa. __ 2,3-bisphosphoglycerate (BPG) binds to the “T state” of hemoglobin. __ After X-rays scatter from a protein crystal, they are focused by an optical lens to yield the electron density maps for that protein.
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