Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An enzyme that catalyzes the hydrolysis of ATP to ADP, releasing energy that is used in the cell; adenosine triphosphatase.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A type of enzyme which works to convert adenosine triphosphate (ATP) into adenosine diphosphate (ADP) and a free phosphate ion, thereby releasing energy to be used in cellular activity.

Etymologies

From ATP + -ase. (Wiktionary)

Examples

  • Neuronal hypoxia and acidosis would disable sodium-potassium ATPase pumps, preventing axonal action potentials, but temporarily sparing lower energy dendritic activity which may correlate more directly with consciousness (10), Another possibility is that consciousness is a low energy quantum process (11), in which case reduced molecular dynamics may limit thermal decoherence, providing a temporal window for enhanced quantum coherent states and a burst of enhanced consciousness.

    Deepak Chopra: End-of-Life Brain Activity - A Sign of the Soul?

  • Go watch the one titled F1-F0 ATPase; it's a beautiful example of a highly efficient molecular motor, and it's the kind of thing the creationists go ga-ga over.

    The Panda's Thumb: Irreducible Complexity Archives

  • Regardless, I can tell there are a few issues – they cite the 2003 critiques of the flagellum evolution model by the pseudonymous “Mike Gene”, without noting that several later scientific developments caused Mike Gene to substantially improve his opinion about even the most radical part of Matzke 2003, which was the idea that a good chunk of the flagellum was homologous to the F1Fo-ATPase and relatives.

    The Panda's Thumb: Irreducible Complexity Archives

  • Function however can be very, I would even say often is, specific, for example, the epsilon subunit inhibits ATPase activity if F1 is not attached to Fo.

    A Decade Spanning Single Exchange

  • Paul et al. (2008) constructed a five-knockout mutant, which three ATPase / secretory fliHIJ lack of the flagellum, but it also contained two ATPase-related protein type 3 secretion systems (INVC and Sansandi).

    Flagellum evolution -- how's your German? - The Panda's Thumb

  • Namba 2008 Distinct roles of the FliI ATPase and proton motive force in bacterial flagellar protein export.

    Flagellum evolution -- how's your German? - The Panda's Thumb

  • Mark Pallen on Namba on the flagellum/ATPase homologies…and me

    The Panda's Thumb: Flagellum evolution Archives

  • Continue reading “Mark Pallen on Namba on the flagellum/ATPase homologies…and me”.

    The Panda's Thumb: Flagellum evolution Archives

  • Since 2003, Matzke hooked up with Mark Pallen, a researcher who studies the flagellum/TTSS and who uncovered sequence evidence that indicated the flagellar gene FliH is a fusion of domains that are homologous to the b subunit and the delta subunit of the F-ATPase.

    Congratulations are in Order

  • Bacterial flagellar protein export requires an ATPase, FliI, and presumptive inhibitor, FliH.

    Congratulations are in Order

Wordnik is becoming a not-for-profit! Read our announcement here.

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.