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P50

From Bioblast
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P50

Description

p50 is the oxygen partial pressure at which (a) respiratory flux is 50% of maximum oxygen flux, Jmax, at saturating oxygen levels. The oxygen affinity is indirectly proportional to the p50. The p50 depends on metabolic state and rate. (b) p50 is the oxygen partial pressure at which oxygen binding (on myoglobin, haemoglobin) is 50%, or desaturation is 50%.

Abbreviation: p50

Reference: Gnaiger 1998 J Exp Biol


MitoPedia concepts: MiP concept 


MitoPedia methods: Respirometry, Spectrophotometry 


MitoPedia topics: Substrate and metabolite