CDKN1B/p27 is localized in mitochondria and improves respiration-dependent processes in the cardiovascular system-New mode of action for caffeine. oleh Niloofar Ale-Agha, Christine Goy, Philipp Jakobs, Ioakim Spyridopoulos, Stefanie Gonnissen, Nadine Dyballa-Rukes, Karin Aufenvenne, Florian von Ameln, Mark Zurek, Tim Spannbrucker, Olaf Eckermann, Sascha Jakob, Simone Gorressen, Marcel Abrams, Maria Grandoch, Jens W Fischer, Karl Köhrer, René Deenen, Klaus Unfried, Joachim Altschmied, Judith Haendeler