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RAF is an acronym for Rapidly Accelerated Fibrosarcoma. [12] RAF kinases participate in the RAS-RAF-MEK-ERK signal transduction cascade, also referred to as the mitogen-activated protein kinase (MAPK) cascade. [11] Activation of RAF kinases requires interaction with RAS-GTPases. The three RAF kinase family members are: A-RAF; B-RAF; c-Raf
The RAF kinase phosphorylates and activates a MAPK/ERK Kinase (MEK1 or MEK2). The MEK phosphorylates and activates a mitogen-activated protein kinase (MAPK). RAF and MAPK/ERK are both serine/threonine-specific protein kinases. MEK is a serine/tyrosine/threonine kinase. In a technical sense, RAF, MEK, and MAPK are all mitogen-activated kinases ...
RAF proto-oncogene serine/threonine-protein kinase, also known as proto-oncogene c-RAF or simply c-Raf or even Raf-1, is an enzyme [4] that in humans is encoded by the RAF1 gene. [ 5 ] [ 6 ] The c-Raf protein is part of the ERK1/2 pathway as a MAP kinase (MAP3K) that functions downstream of the Ras subfamily of membrane associated GTPases. [ 7 ]
Progestin and adipoQ receptor family member 3 (PAQR3), or Raf Kinase Trapping to Golgi apparatus (RKTG) is a protein that in humans is encoded by the PAQR3 gene. [5] It is a member of the progestin and adipoQ receptor (PAQR) family. [6] PAQR3 is predicted to have seven transmembrane helices and to be localized to the Golgi Apparatus.
The MAP kinase-kinase, which activates ERK, was named "MAPK/ERK kinase" . [5] Receptor-linked tyrosine kinases, Ras, Raf, MEK, and MAPK could be fitted into a signaling cascade linking an extracellular signal to MAPK activation. [6] See: MAPK/ERK pathway. Transgenic gene knockout mice lacking MAPK1 have major defects in early development. [7]
The figure shows the interaction and cooperation of MEK, DUSP5 and DUSP6/MKP-3 within the cytoplasmic region and the nucleus. RAF activates MEK. Activated MEK phoshorylates ERK which can now be transported across the cell membrane by a transporter. Dephosphorylated ERK cannot leave the nucleus.
PARGC1A gene key to weight loss. At the study’s conclusion, researchers found that participants in the exercise group who had the most “skinny genes” lost up to 5 kg (about 11 lbs) during ...
Serine/threonine-protein kinase A-Raf or simply A-Raf is an enzyme that in humans is encoded by the ARAF gene. [5] A-Raf is a member of the Raf kinase family of serine/threonine-specific protein kinases. [6] Compared to the other members of this family (Raf-1 and B-Raf), very little is known about A-Raf.