Portal de Periódicos da CAPES

Mitochondrial Cristae Shape Determines Respiratory Chain Supercomplexes Assembly and Respiratory Efficiency

2013; Cell Press; Volume: 155; Issue: 1 Linguagem: Inglês

10.1016/j.cell.2013.08.032

1097-4172

Sara Cogliati, Christian Frezza, María Eugenia Soriano, Tatiana Varanita, Rubén Quintana–Cabrera, Mauro Corrado, Sara Cipolat, Veronica Costa, Alberto Casarin, Lígia C. Gomes, Ester Perales‐Clemente, Leonardo Salviati, Patricio Fernández‐Silva, José Antonio Enrı́quez, Luca Scorrano,

Metabolomics and Mass Spectrometry Studies

Respiratory chain complexes assemble into functional quaternary structures called supercomplexes (RCS) within the folds of the inner mitochondrial membrane, or cristae. Here, we investigate the relationship between respiratory function and mitochondrial ultrastructure and provide evidence that cristae shape determines the assembly and stability of RCS and hence mitochondrial respiratory efficiency. Genetic and apoptotic manipulations of cristae structure affect assembly and activity of RCS in vitro and in vivo, independently of changes to mitochondrial protein synthesis or apoptotic outer mitochondrial membrane permeabilization. We demonstrate that, accordingly, the efficiency of mitochondria-dependent cell growth depends on cristae shape. Thus, RCS assembly emerges as a link between membrane morphology and function.