= Scott M. Coyle
{c}
Scott M. Coyle coauthored a 2011 biochemical and structural investigation of <Xrn1> with <Martin Jinek> and <Jennifer A. Doudna>. It linked <Xrn1 5′-phosphate recognition> with <processivity>, the persistence of successive cleavage events during an enzyme–substrate encounter.<Coupled 5′ nucleotide recognition and processivity in Xrn1-mediated mRNA decay by Martin Jinek and others>[Full byline and Summary]{ref}
The experimental evidence included degradation of labeled <RNA> assessed by <polyacrylamide gel electrophoresis>. Comparing intact substrate with shorter products helped distinguish efficient complete processing from the accumulation of intermediates.<Coupled 5′ nucleotide recognition and processivity in Xrn1-mediated mRNA decay by Martin Jinek and others>[Results and Figure 3: degradation assays and intermediate products]{ref}
An original bookkeeping example separates molecule disappearance from the number of cleaved bonds. Suppose a sample begins with $100$ identical chains, each $20$ <nucleotides> long. If every chain loses just one terminal <nucleotide>, none of the original full-length molecules remains, but $100\times19=1900$ <nucleotides> are still present in the shortened chains. Their loss from the full-length band does not imply complete conversion into individual <nucleotides>.
Conversely, a large amount of short product at one sampling time does not alone measure the <reaction rate> or prove that each chain stayed bound throughout processing. A time series and appropriate controls add information that a single end-point <gel electrophoresis> image cannot supply. These are interpretive examples, without an inferred assignment of individual experiments from Coyle's author position.
\Image[https://btp.wisc.edu/wp-content/uploads/sites/510/2025/07/Coyle_Scott7329cropsmsq.jpg]
{title=Scott M. Coyle, portrait linked from the University of Wisconsin–Madison Biotechnology Training Program}
{description=<Scott M. Coyle institutional portrait and author identity>[Named Scott Coyle portrait; full-name correspondence confirmed by his own publication]{ref}}
Back to article page
