FD, a basic leucine zipper (bZIP) transcription factor that is expressed in the meristem.

TLS Online TPP Program

#Id: 7388

#Unit 5. Developmental Biology

TLS Online TPP Program

#Id: 6000

#Unit 3. Fundamental Processes

The origin recognition complex (ORC) is a highly conserved complex found in all eukaryotes.  It is composed of six proteins with a mass of 400 kD.  ORC binds to the yeast A and B1 elements on the A-T–rich strand and is associated with ARS elements throughout the cell cycle.

TLS Online TPP Program

#Id: 8602

#Unit 2. Cellular Organization

cyclin-CDK complexes preferentially phosphorylate

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

[S/T]PX[R/K]K 

TLS Online TPP Program

#Id: 4784

#Unit 5. Developmental Biology

In an unperturbed embryo, both ABa and ABp contact the EMS blastomere, but only ABp contacts the P2 cell.

TLS Online TPP Program

#Id: 9321

#Unit 4. Cell Communication and Cell Signaling

Low intracellular Ca2+ concentration is sensed by a class of Ca2+ -binding proteins known as guanylate cyclase–activating proteins.