Monday, 20 March 2017

The RAS family of oncoproteins | Crack AIIMS, NEET 2017 MCQs


The RAS family of oncoproteins is an example of: 

A. Growth factors 
B. Signal transducing proteins 
C. Growth factor receptors 
D. Transcription factors



Ans. B. Signal Transduction Proteins
• Is a protein subfamily of small GTPases that are involved in cellular signal transduction, and is also used to designate gene subfamily of the genes encoding those proteins.
• Activation of Ras signalling causes cell growth, differentiation and survival.
• Ras is the prototypical member of the Ras superfamily of proteins which are all related in structure and regulate diverse cell behaviours.