Packet 9: Tossup 16

The donation of this functional group is accomplished by a cofactor consisting (15[1])of an s-adenosyl (15[1])group attached to an amino acid. (15[2])The enzyme (15[1])Dam (15[1])in E. (15[1])coli (-5[1])donates this functional group, (15[1])which marks the template strand (15[1])during mismatch repair. (15[2])Uracil and thymine solely differ (15[1])by the presence of this functional group. (-5[2])CpG islands are hotspots for the (15[1])(*) addition of this functional (10[2])group near promoter (-5[1])sequences. (10[1])Unlike the addition of an acetyl (10[1])group, (10[2])the addition of this functional (10[1])group (10[3])on histones (10[2])can either (10[1])repress or active (-5[1])transcription. For 10 points, (10[1])name this one carbon functional group symbolized (-5[1])CH3. ■END■ (10[7]0[8])

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