Abstract:In heme-based gas sensor proteins, heme acts as the sensing site for binding of gaseous molecules, including O2, NO and CO, and indirectly regulates many physiological functions, including the activities of protein kinases, guanylate cyclase, phosphodiesterase, and transcriptional regulatory factors, in response to gas availability. Conceptually, these proteins are always composed of at least two domains: one is a sensor domain (heme-based gas sensing) and the other is a functional domain. However, the structu… Show more
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