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.
• 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.