Stoichiometry of proton pumping by the cbb(3)-type oxygen reductase in whole cells of Rhodobacter capsulatus at pH 7 is about 0.5 H+ per electron
Yükleniyor...
Dosyalar
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Natl Acad Sciences
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Recently, we reported (1) that the stoichiometry of proton pumping is about 0.4–0.5 proton per electron for members of the C family of respiratory oxygen reductases, also called the cbb3-type cytochrome c oxidases. This amount (0.5) is about half of the value obtained with the canonical A family of respiratory oxygen reductases, which includes the mitochondrial cytochrome c oxidases. We pointed out that the low stoichiometry correlates with the absence of the D channel for proton input and speculated that these properties may be an evolutionary adaptation to aerobic respiration under conditions of low oxygen.
Açıklama
Anahtar Kelimeler
Rhodobacter
Kaynak
Proceedings Of The National Academy Of Sciences Of The United States Of America
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
109
Sayı
32
