Difference between revisions of "Oxygen flow"

Latest revision as of 10:25, 8 February 2024

Oxygen flow

MitoPedia O2k and high-resolution respirometry: O2k-Open Support

Description

Respiratory oxygen flow is the oxygen consumption per total system, which is an extensive quantity. Flow is advancement of a transformation in a system per time [mol·s^-1], when 'system' is defined as the experimental system (e.g. an open or closed chamber). Flow is distinguished from the size-specific quantity flux obtained by normalization of flow per volume of the experimental system [mol·s^-1·m^-3]. An experimental object, e.g. a living cell, may be considered as the 'experimental system'. Then oxygen flow per cell has the unit [mol·s^-1·x^-1], where [x] is the elementary unit for a count. Oxygen flow or respiration per cell [amol·s^-1·x^-1] = [pmol·s^-1·Mx^-1] is normalized for the cell count, distinguished from oxygen flux (e.g. per mg protein or wet mass). These are different forms of normalization of rate.

Abbreviation: I_O2 [mol·s^-1] or [mol·s^-1·x^-1]

Reference: Gnaiger E et al ― MitoEAGLE Task Group (2020) Mitochondrial physiology. Bioenerg Commun 2020.1. https://doi.org/10.26124/bec:2020-0001.v1, Gnaiger E (2021) The elementary unit — canonical reviewer's comments on: Bureau International des Poids et Mesures (2019) The International System of Units (SI) 9th ed. https://doi.org/10.26124/mitofit:200004.v2, Gnaiger 2020 BEC MitoPathways, Gnaiger_1993_Pure Appl Chem, Renner_2003_Biochim_Biophys_Acta

Bioblast links: Normalization - >>>>>>> - Click on [Expand] or [Collapse] - >>>>>>>

Rate

» Normalization of rate

» Flow

» Oxygen flow

» Flux

» Oxygen flux

» Flux control ratio

» Coupling-control ratio

» Pathway control ratio

» Flux control efficiency

Quantities for normalization

» Count in contrast to Number

» Mitochondrial marker

» O2k-Protocols: mitochondrial and marker-enzymes

» Citrate synthase activity

General

» Extensive quantity

» Specific quantity

» Advancement

» Motive unit

» Iconic symbols

Related keyword lists

» Keywords: Concentration and pressure

MitoPedia concepts: MiP concept, Ergodynamics

MitoPedia methods: Respirometry

MitoPedia O2k and high-resolution respirometry: DatLab

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-{{MitoPedia
+{{Technical support}}
-|abbr=''I''<sub>O2</sub> [mol·s<sup>-1</sup>]
+{{MitoPedia without banner
-|description=Respiratory '''oxygen flow''' is the oxygen consumption per total system, which is an [[extensive quantity]]. [[Flow]] is advancement of a transformation in a system per time. Oxygen flow or respiration of a cell is distinguished from [[oxygen flux]] (e.g. per mg protein or wet weight). These are different forms of [[normalization of rate]].
+|abbr=''I''<sub>O2</sub> [mol·s<sup>-1</sup>] or [mol·s<sup>-1</sup>·x<sup>-1</sup>]
-|info=[[BEC 2020.1]], [[Gnaiger 2020 BEC MitoPathways]], [[Gnaiger_1993_Pure Appl Chem]], [[Renner_2003_Biochim_Biophys_Acta]]
+|description=Respiratory '''oxygen flow''' is the oxygen consumption per total [[system]], which is an [[extensive quantity]]. [[Flow]] is advancement of a transformation in a system per time [mol·s<sup>-1</sup>], when 'system' is defined as the experimental system (e.g. an open or closed chamber). Flow is distinguished from the size-specific quantity [[flux]] obtained by normalization of flow per volume of the experimental system [mol·s<sup>-1</sup>·m<sup>-3</sup>]. An experimental object, e.g. a living cell, may be considered as the 'experimental system'. Then oxygen flow per cell has the unit [mol·s<sup>-1</sup>·x<sup>-1</sup>], where [x] is the [[elementary unit]] for a [[count]]. Oxygen flow or respiration per cell [amol·s<sup>-1</sup>·x<sup>-1</sup>] = [pmol·s<sup>-1</sup>·Mx<sup>-1</sup>] is normalized for the cell count, distinguished from [[oxygen flux]] (e.g. per mg protein or wet mass). These are different forms of [[normalization of rate]].
+|info=Gnaiger E et al ― MitoEAGLE Task Group (2020) Mitochondrial physiology. Bioenerg Commun 2020.1. https://doi.org/10.26124/bec:2020-0001.v1, Gnaiger E (2021) The elementary unit — canonical reviewer's comments on: Bureau International des Poids et Mesures (2019) The International System of Units (SI) 9th ed. https://doi.org/10.26124/mitofit:200004.v2, [[Gnaiger 2020 BEC MitoPathways]], [[Gnaiger_1993_Pure Appl Chem]], [[Renner_2003_Biochim_Biophys_Acta]]
 }}