Cytochrome b

A cytochrome b that is encoded in the genome of human. [PRO:DNx, UniProtKB:P00156]

Synonyms

Complex III subunit 3;
Complex III subunit III;
Cytochrome b-c1 complex subunit 3;
Ubiquinol-cytochrome-c reductase complex cytochrome b subunit

Research

Bioassay Publications (1)

Timeframe	Studies on this Protein(%)	All Drugs %
pre-1990	0 (0.00)	18.7374
1990's	0 (0.00)	18.2507
2000's	0 (0.00)	29.6817
2010's	1 (100.00)	24.3611
2020's	0 (0.00)	2.80

Compounds (3)

Drugs with Inhibition Measurements

Drug	Taxonomy	Measurement	Average (mM)	Bioassay(s)	Publication(s)
atovaquone	Homo sapiens (human)	IC50	2.8350	1	2
2-(3-phenyl-1-indazolyl)acetic acid methyl ester	Homo sapiens (human)	IC50	26.7060	1	2
3-methylbutanoic acid [(2R,3S,6S,7R)-3-[[(3-formamido-2-hydroxyphenyl)-oxomethyl]amino]-8-hexyl-2,6-dimethyl-4,9-dioxo-1,5-dioxonan-7-yl] ester	Homo sapiens (human)	IC50	0.0060	1	2

Enables

This protein enables 3 target(s):

Target	Category	Definition
ubiquinol-cytochrome-c reductase activity	molecular function	Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+. [RHEA:11484]
protein-containing complex binding	molecular function	Binding to a macromolecular complex. [GOC:jl]
metal ion binding	molecular function	Binding to a metal ion. [GOC:ai]

Located In

This protein is located in 2 target(s):

Target	Category	Definition
mitochondrion	cellular component	A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration. [GOC:giardia, ISBN:0198506732]
mitochondrial inner membrane	cellular component	The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae. [GOC:ai]

Active In

This protein is active in 1 target(s):

Target	Category	Definition
membrane	cellular component	A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it. [GOC:dos, GOC:mah, ISBN:0815316194]

Part Of

This protein is part of 1 target(s):

Target	Category	Definition
mitochondrial respiratory chain complex III	cellular component	A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1. [GOC:mtg_sensu, ISBN:0198547684]

Involved In

This protein is involved in 15 target(s):

Target	Category	Definition
response to hypoxia	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level. [GOC:hjd]
mitochondrial electron transport, ubiquinol to cytochrome c	biological process	The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III. [ISBN:0716731363]
response to xenobiotic stimulus	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus from a xenobiotic, a compound foreign to the organim exposed to it. It may be synthesized by another organism (like ampicilin) or it can be a synthetic chemical. [GOC:jl, GOC:krc]
response to toxic substance	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a toxic stimulus. [GOC:lr]
electron transport coupled proton transport	biological process	The transport of protons against an electrochemical gradient, using energy from electron transport. [GOC:mah]
animal organ regeneration	biological process	The regrowth of a lost or destroyed animal organ. [GOC:mah]
response to cobalamin	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cobalamin (vitamin B12) stimulus. [GOC:sl]
response to glucagon	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a glucagon stimulus. [GOC:sl]
cellular respiration	biological process	The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which either requires oxygen (aerobic respiration) or does not (anaerobic respiration). [GOC:das, ISBN:0140513590, ISBN:0198506732]
response to ethanol	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an ethanol stimulus. [GOC:go_curators]
response to cadmium ion	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cadmium (Cd) ion stimulus. [GOC:ai]
response to copper ion	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a copper ion stimulus. [GOC:ai]
response to mercury ion	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a mercury ion stimulus. [GOC:ai]
response to calcium ion	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a calcium ion stimulus. [GOC:ai]
response to hyperoxia	biological process	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating increased oxygen tension. [GOC:kmv]