% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Hdig:902470, author = {Hüdig, Meike and Tronconi, Marcos A and Zubimendi, Juan P and Sage, Tammy L and Poschmann, Gereon and Bickel, David and Gohlke, Holger and Maurino, Veronica G}, title = {{R}espiratory and {C}4-photosynthetic {NAD}-malic enzyme coexist in bundle sheath cell mitochondria and evolved via association of differentially adapted subunits}, journal = {The plant cell}, volume = {34}, number = {1}, issn = {1040-4651}, address = {Rockville, Md.}, publisher = {Soc.}, reportid = {FZJ-2021-04289}, pages = {597–615}, year = {2022}, abstract = {In plant mitochondria, nicotinamide adenine dinucleotide phosphate (NAD)-malic enzyme (NAD-ME) has a housekeeping function in malate respiration. In different plant lineages, NAD-ME was independently co-opted in C4 photosynthesis. In the C4 Cleome species Gynandropsis gynandra and Cleome angustifolia, all NAD-ME genes (NAD-MEα, NAD-MEβ1, and NAD-MEβ2) were affected by C4 evolution and are expressed at higher levels than their orthologs in the C3 species Tarenaya hassleriana. In Tarenaya hassleriana, the NAD-ME housekeeping function is performed by two heteromers, NAD-MEα/β1 and NAD-MEα/β2, with similar biochemical properties. In both C4 species, this role is restricted to NAD-MEα/β2. In the C4 species, NAD-MEα/β1 is exclusively present in the leaves, where it accounts for most of the enzymatic activity. GgNAD-MEα/β1 exhibits high catalytic efficiency and is differentially activated by the C4 intermediate aspartate, confirming its role as the C4-decarboxylase. During C4 evolution, NAD-MEβ1 lost its catalytic activity; its contribution to the enzymatic activity results from a stabilizing effect on the associated α-subunit and the adquisition of regulatory properties. We conclude that in bundle sheath cell mitochondria of C4 species, the functions of NAD-ME as C4 photosynthetic decarboxylase and as a housekeeping enzyme coexist and are performed by isoforms that combine the same α subunit with differentially adapted β subunits.}, cin = {IBG-4 / JSC / NIC / IBI-7}, ddc = {540}, cid = {I:(DE-Juel1)IBG-4-20200403 / I:(DE-Juel1)JSC-20090406 / I:(DE-Juel1)NIC-20090406 / I:(DE-Juel1)IBI-7-20200312}, pnm = {2171 - Biological and environmental resources for sustainable use (POF4-217) / 2172 - Utilization of renewable carbon and energy sources and engineering of ecosystem functions (POF4-217) / 5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) / Forschergruppe Gohlke $(hkf7_20200501)$ / 5241 - Molecular Information Processing in Cellular Systems (POF4-524)}, pid = {G:(DE-HGF)POF4-2171 / G:(DE-HGF)POF4-2172 / G:(DE-HGF)POF4-5111 / $G:(DE-Juel1)hkf7_20200501$ / G:(DE-HGF)POF4-5241}, typ = {PUB:(DE-HGF)16}, pubmed = {pmid:34734993}, UT = {WOS:000745840600036}, doi = {10.1093/plcell/koab265}, url = {https://juser.fz-juelich.de/record/902470}, }