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One common motif for DNA binding proteins is the Helix-Turn-Helix motif, where the first helix fits in the major groove and the second helix makes contacts along the phosphate backbone to stabilize the helix in the major groove. If a mutation changes one of the recognition amino acids in the binding helix from a glutamic acid residue to a proline residue, what effect on binding would you predict? (you should imagine the amino acids in a peptide at physiological pH)
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The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2
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One common motif for DNA binding proteins is the Helix-Turn-Helix motif, where the first helix fits...
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