Keyword Analysis & Research: signaling molecule ras

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What happens to the Ras protein after the signal is sent?

After the signal has been sent, the Ras protein is hydrolyzed into a GDP-bound form and becomes inactive once again.

What is Ras protein?

Ras is a family of related proteins which is expressed in all animal cell lineages and organs. All Ras protein family members belong to a class of protein called small GTPase, and are involved in transmitting signals within cells ( cellular signal transduction ).

What is the function of Ras in DNA binding?

Ras is a guanosine - nucleotide -binding protein. Specifically, it is a single-subunit small GTPase, which is related in structure to the G α subunit of heterotrimeric G proteins (large GTPases). G proteins function as binary signaling switches with "on" and "off" states.

What are the different pathways of Ras?

Two of the main cellular pathways in which the RAS protein operates are the mitogen-activated protein kinases (MAPK) and phosphoinositide-3 kinase (PI3K) pathways. In a normal cell, these are important in controlling several functions, such as cell growth and survival.

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