Cytochrome b-245 chaperone 1, also known as Eros (essential for reactive oxygen species) in mice, is a transmembrane protein that may play a central role as a chaperone critical for expression of gp91phox and p22phox and hence for the cytochrome b558 heterodimer [1].

1: Eros is a novel transmembrane protein that controls the phagocyte respiratory burst and is essential for innate immunity. Thomas DC, Clare S, Sowerby JM, Pardo M, Juss JK, Goulding DA, van der Weyden L, Storisteanu D, Prakash A, Espeli M, Flint S, Lee JC, Hoenderdos K, Kane L, Harcourt K, Mukhopadhyay S, Umrania Y, Antrobus R, Nathan JA, Adams DJ, Bateman A, Choudhary JS, Lyons PA, Condliffe AM, Chilvers ER, Dougan G, Smith KG; J Exp Med. 2017;214:1111-1128. PMID:28351984