= S. F. Yang
{c}
<S. F. Yang> studied the biosynthesis of <Ethylene>, a <plant hormone> involved in <fruit> <ripening>. A 1979 study with <D. O. Adams> established <1-aminocyclopropane-1-carboxylate> as an intermediate between <methionine> and <Ethylene>.<Ethylene biosynthesis: Identification of 1-aminocyclopropane-1-carboxylic acid as an intermediate in the conversion of methionine to ethylene by D. O. Adams and S. F. Yang>[PNAS76, pp.170–174; Abstract and byline]{ref}
In <apple> tissue, labelled <methionine> produced <Ethylene> in air but accumulated the cyclic intermediate under <nitrogen>. Supplying labelled <1-aminocyclopropane-1-carboxylate> and comparing responses to an inhibitor helped establish the order of the reactions. The design used both precursor tracing and bypass of a blocked upstream step, rather than assuming that correlated concentrations reveal pathway order.<Ethylene biosynthesis: Identification of 1-aminocyclopropane-1-carboxylic acid as an intermediate in the conversion of methionine to ethylene by D. O. Adams and S. F. Yang>[Abstract; air/nitrogen comparison and inhibitor bypass]{ref}
\Image[https://www.plantsciences.ucdavis.edu/sites/g/files/dgvnsk1736/files/styles/sf_profile/public/media/images/yang-shang-fa-516x576.jpg?h=07b3eee9&itok=oMSb-1q-]
{title=S. F. Yang}
{description=Portrait identified on the https://www.plantsciences.ucdavis.edu/people/shang-fa-yang/[UC Davis Department of Plant Sciences memorial profile], which describes the 1979 ethylene-pathway work.}
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