Medical Definition of U protein

1. Hypothetical protein thought to regulate the transition of cells from G0 to G1 phase of the cell cycle and thus inevitably into S phase. The idea would be that the concentration of this unstable (u) protein would have to exceed a threshold level for triggering progression through the cycle and that this would only happen if the cell had adequate access to growth factors or to nutrients. Synonym: trigger protein. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)



Lexicographical Neighbors of U Protein

UV
UV-EPROM
UVA
UVB
UVC
UVCE
UVEB
UVF
UV endonuclease
UV incision nuclease
UW
UX
UXB
UXO
UXi
U protein (current term)
U wave
Uab Meto
Uachtarán
Uathach
Ubaid
Ubangian
Ubermensch
Ubud
Ubykh
Uca
Ucalegon
Ucalegons
Uckers
Uckewallist

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