Mitochondrial SIRT4-type proteins in Caenorhabditis elegans and mammals interact with pyruvate carboxylase and other acetylated biotin-dependent carboxylases.
Wirth M, Karaca S, Wenzel D, Ho L, Tishkoff D, Lombard DB, Verdin E, Urlaub H, Jedrusik-Bode M, Fischle W. Mitochondrion. 2013 Nov; 13(6):705-20. Epub 2013 Feb 21.