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

TLS Online TPP Program

#Id: 8616

#Section 3: Genetics, Cellular and Molecular Biology

Phosphorylation of T14 and Y15 in this G-loop

introduces negative charge that electrostatically interferes with the binding of ATP in the catalytic pocket.

TLS Online TPP Program

#Id: 7943

#Section 3: Genetics, Cellular and Molecular Biology

Classes of ER membrane proteins

TLS Online TPP Program

#Id: 10286

#Section 2: General Biology

T cells initiate the adaptive immune response by interacting MHC on antigen-presenting cells that have been exposed to pathogens. 

TLS Online TPP Program

#Id: 8332

#Section 3: Genetics, Cellular and Molecular Biology

Latrunculin, 

a toxin secreted by sponges, binds and sequesters G-actin

TLS Online TPP Program

#Id: 7324

#Section 3: Genetics, Cellular and Molecular Biology