Shorthand for a protein which has been uniformly
\(\ce{^{15}N{-}}\) and
\(\ce{^{13}C{-}labelled}\).
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 686 (https://doi.org/10.1515/pac-2019-0203)