The Cip/Kip family members bind to cyclin-bound CDKs and block the activity of cyclin D-, E-, A-, and B-containing complexes.

TLS Online TPP Program

#Id: 8950

#Section 3: Genetics, Cellular and Molecular Biology

TLS Online TPP Program

#Id: 8114

#Section 2: General Biology

Sphingosine itself can be phosphorylated to produce sphingosine-1-phosphate (S1P) inside cells. 

TLS Online TPP Program

#Id: 8517

#Section 3: Genetics, Cellular and Molecular Biology

Other proteins function with dynein & involved in regulating the activity of dynein during brain development:

LIS1 and NudE

TLS Online TPP Program

#Id: 8322

#Section 3: Genetics, Cellular and Molecular Biology

Steady-state phase

G-actin monomers exchange with subunits at the filament ends, but there is no net change in the total length of filaments.

TLS Online TPP Program

#Id: 8032

#Section 2: General Biology

Ornithine and citrulline, which are not found in proteins, are intermediates in the biosynthesis of arginine and in the urea cycle.