The phrase "activates itself" is correct and usable in written English.
It can be used in contexts where something is designed to initiate or start functioning on its own without external input.
Example: "The security system activates itself when it detects any unusual movement in the vicinity."
Alternatives: "self-activates" or "initiates automatically".
Goldbeter also posited a catalytic function for cyclin activation of MPF, without the positive feedback loop whereby MPF activates itself.
Here, we report a new transcriptional regulation system in which an ATF that is designed to upregulate a target gene also activates itself.
The small intestine continuously activates itself by sampling the molecules that pass through the intestinal lining.
In the season eight finale, the orb activates itself and transports Zod to Smallville.
The smarties at Zipwhip have engineered what appears to be an Espresso Machine Of The Future: Employees can send the company's coffee machine a text message with their order; the espresso machine "reads" the text and then activates itself, grinding the beans and dispensing the drinks one by one, leaving them on a heating tray for whenever the sender arrives.
(ii) The Oct4-Cdx2 heterodimer are repressors on both Oct4 and Cdx2, where the latter activates itself through the binding of Cdx2 to its own promoter [12].
In addition to its proteolytic activity, MMP-3 can activate itself and other MMPs [ 5] such as MMP-1.
But at least one much anticipated April 1 news event activated itself in reliable fashion: The Fleet Street April Fools' hoax.
"After we have achieved historic turnout in 2008 and 2012, especially in the African-American community, I will consider it a personal insult — an insult to my legacy — if this community lets down its guard and fails to activate itself in this election," Obama said.
He knew from the way Fawad dusted off his hands and looked out to sea and then back at him, as the Frenchman began to sketch the turtle, and the Portuguese woman asked about turtle eggs, and the turtle started moving again and dropped down into the water, activating itself like a giant engine, and swam away.
BMI1 also auto-activates itself.
