Monomeric heme protein which primary function is to store oxygen and facilitate its diffusion within muscle tissues. Reversibly binds oxygen through a pentacoordinated heme iron and enables its timely and efficient release as needed during periods of heightened demand (PubMed:30918256, PubMed:34679218). Depending on the oxidative conditions of tissues and cells, and in addition to its ability to bind oxygen, it also has a nitrite reductase activity whereby it regulates the production of bioactive nitric oxide (PubMed:32891753). Under stress conditions, like hypoxia and anoxia, it also protects cells against reactive oxygen species thanks to its pseudoperoxidase activity (PubMed:34679218).
Myopathy, sarcoplasmic body
MYOSB
An autosomal dominant, slowly progressive muscle disorder manifesting in adulthood with proximal and axial weakness that progresses to involve distal muscles. Patients may lose ambulation after a long disease course, and some individuals develop respiratory or cardiac symptoms. Muscle pathology features include sarcoplasmic bodies in skeletal and cardiac muscles.
None
The disease is caused by variants affecting the gene represented in this entry.
Belongs to the globin family.
Myoglobin, Nitrite reductase MB, Pseudoperoxidase MB, MB
Proteins
Immunology & Infectious Disease
17184Da
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