Sulfur normally exists as an eight-atom molecule, S8, while phosphorus exists as a four-atom molecule, P4

TLS Online TPP Program

#Id: 8900

#XL - R Botany

The Aurora protein kinase family members Aurora A and Aurora B and their associated regulatory factors sense kinetochores that are not under tension and sever these microtubule attachments

TLS Online TPP Program

#Id: 8598

#XL - T Zoology

Labile factors called cyclins drive the progression of cells through different stages of the cell cycle by binding to CDKs.

TLS Online TPP Program

#Id: 8599

#XL - T Zoology

Cells commit to a new cell division at a specific point in G1 known as START or the restriction point.

TLS Online TPP Program

#Id: 8600

#XL - T Zoology

R-factor 

In mammalian cells - cyclin D 

In yeast - Cln3

TLS Online TPP Program

#Id: 8601

#XL - T Zoology

TLS Online TPP Program

#Id: 8602

#XL - T Zoology

cyclin-CDK complexes preferentially phosphorylate

serine and threonine residues when they are found within the consensus sequence:

[S/T]PX[R/K]K