Year: 2005
Type: article
Abstract: Solid-state (13)C NMR measurements of intact soybean leaves labeled by (13)CO(2) (at subambient concentrations) show that excess glycine from the photorespiratory C(2) cycle (i.e. glycine not part of the production of glycerate in support of photosynthesis) is either fully decarboxylated or inserted as (13)C-labeled glycyl residues in proteins. This (13)C incorporation in leaf protein, which is uniformly (15)N labeled by (15)NH(4)(15)NO(3), occurs as soon as 2 min after the start of (13)CO(2) labeling. In those leaves with lower levels of available nitrogen (as measured by leaf nitrate and glutamine-glutamate concentrations), the excess glycine is used primarily as glycyl residues in protein.
Source: Journal of Biological Chemistry
Authors: Lynette Cegelski, Jacob Schaefer
Institution: Washington University in St. Louis
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: hybrid
Estimated APC paid: $3,430
Funder: National Science Foundation
OpenAlex ID: W1995411599