Its wall is made up of 13 protofilaments, each consisting of heterodimeric subunits containing two related tubulin proteins. (sciencedaily.com)
Bach1 is a member of the BTB and CNC transcriptional regulator family that, like Nrf2, binds to ARE sequences as heterodimeric complexes with small Maf proteins [18] A major physiological role for Bach1 is in iron homeostasis through regulation of the expression of heme oxygenase - 1 (HMOX1), ferroportin (FPN1) and Ferritin (FTH) genes [23], [24], [33], [41]. (journals.plos.org)
Hendrik Göddeke, M. Hadi Timachi, Cedric A. J. Hutter, Laura Galazzo, Markus A. Seeger, Mikko Karttunen, Enrica Bordignon, Lars V. Schäfer: Atomistic Mechanism of Large - Scale Conformational Transition in a Heterodimeric ABC Exporter, in: Journal of the American Chemical Society, 2018, DOI: 10.1021 / jacs.7 b12944 (news.rub.de)