Tossup

Organisms that lack this structure often replace it with a molecule of either NAD+, NADH, or a dephosphorylated coenzyme A. CBC binds to this structure as a quality control checkpoint (10[1])prior to its export. This structure (10[1])can be removed by a complex that includes Dcp1 and Dcp2 prior to sequestration in P-bodies. (-5[1])Influenza (10[1])uses RdRP binding and an endonuclease to commandeer this structure in a process known as its “snatching.” A unique (10[1]-5[2])triphosphate linkage (10[1])connects this structure, which consists of a single (10[1])7-methyl·guanosine nucleotide, (10[1])to the rest of the molecule that (10[1])contains it. (10[1])This is the only one of the three major post-transcriptional (10[1])modifications to always (10[1])occur upstream of the start codon. (-5[3])For 10 points, name this structure that is added (10[1])on the opposite end of the poly-A tail (-5[2])to form mature mRNA in eukaryotes. ■END■ (10[2]0[10])

Back to tossups

Buzzes

Summary