Chemistry 27 Midterm: CHEM27 Harvard Exam2 2005answers
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Directions: do not write in red ink. You may use the back of this amino acid page for scratch work but nothing written on this page will be graded: you have 11 total pages. We have provided plenty of space for each answer: all intermediates must be drawn as a distinct step. You need not draw out proton transfers as a distinct step unless explicitly told to do so: molecular model kits and calculators are permitted, a significant fraction of your exams are photocopied before they are returned. Name:_________________________________: [20pts] consider the triose phosphate analogs shown below. 3: for each of the above molecules, identify whether or not it is a substrate for tim. If it is a substrate, draw the final product (no mechanism is needed). If it is not a substrate, state briefly why not. (6pts) Tim normally abstracts the pro-r hydrogen from triose phosphate.
