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Details on Person UniProt:O43741 PRKAB2

Class:IdReferenceGeneProduct:49386
_chainChangeLogchain:1-272 added on Fri February 6 2015
_displayNameUniProt:O43741 PRKAB2
_timestamp2024-11-03 20:08:40
chainchain:1-272
checksum42B23BD70B92519C
commentFUNCTION Non-catalytic subunit of AMP-activated protein kinase (AMPK), an energy sensor protein kinase that plays a key role in regulating cellular energy metabolism. In response to reduction of intracellular ATP levels, AMPK activates energy-producing pathways and inhibits energy-consuming processes: inhibits protein, carbohydrate and lipid biosynthesis, as well as cell growth and proliferation. AMPK acts via direct phosphorylation of metabolic enzymes, and by longer-term effects via phosphorylation of transcription regulators. Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton; probably by indirectly activating myosin. Beta non-catalytic subunit acts as a scaffold on which the AMPK complex assembles, via its C-terminus that bridges alpha (PRKAA1 or PRKAA2) and gamma subunits (PRKAG1, PRKAG2 or PRKAG3).SUBUNIT AMPK is a heterotrimer of an alpha catalytic subunit (PRKAA1 or PRKAA2), a beta (PRKAB1 or PRKAB2) and a gamma non-catalytic subunits (PRKAG1, PRKAG2 or PRKAG3).INTERACTION Phosphorylated when associated with the catalytic subunit (PRKAA1 or PRKAA2). Phosphorylated by ULK1 and ULK2; leading to negatively regulate AMPK activity and suggesting the existence of a regulatory feedback loop between ULK1, ULK2 and AMPK.SIMILARITY Belongs to the 5'-AMP-activated protein kinase beta subunit family.
descriptionrecommendedName: 5'-AMP-activated protein kinase subunit beta-2 shortName: AMPK subunit beta-2
geneNamePRKAB2
identifierO43741
isSequenceChangedFALSE
keyword3D-structure
Alternative splicing
Fatty acid biosynthesis
Fatty acid metabolism
Lipid biosynthesis
Lipid metabolism
Phosphoprotein
Proteomics identification
Reference proteome
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
namePRKAB2
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:9003357] ENSEMBL:ENSG00000131791 PRKAB2 [Homo sapiens]
secondaryIdentifierAAKB2_HUMAN
A8K9V5
B4DH06
Q5VXY0
sequenceLength272
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:8977273] UniProt:O43741-1 PRKAB2 [Homo sapiens]
[ReferenceIsoform:8977274] UniProt:O43741-2 PRKAB2 [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:164096] PRKAB2 [nucleoplasm] [Homo sapiens]
[EntityWithAccessionedSequence:200413] PRKAB2 [cytosol] [Homo sapiens]
[EntityWithAccessionedSequence:9931271] PRKAB2 [endoplasmic reticulum lumen] [Homo sapiens]
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No pathways have been reviewed or authored by UniProt:O43741 PRKAB2 (49386)