Core enzyme binds indiscriminately to any DNA. Sigma factor reduces the affinity for sequence-independent binding and confers specificity for promoters.

TLS Online TPP Program

#Id: 3420

#Unit 3. Fundamental Processes

Mammalian pathway for NHEJ

TLS Online TPP Program

#Id: 9100

#Unit 4. Cell Communication and Cell Signaling

In response to activation of acetylcholine GPCRs, PLC, and the elevation in cytosolic Ca²+, Nitric oxide is synthesized in endothelial cells.

TLS Online TPP Program

#Id: 118

#Unit 5. Developmental Biology

Cells of the responding tissue must have both, 

A receptor protein for the inducing factor 

The ability to respond to the signal

TLS Online TPP Program

#Id: 9895

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 9775

#Unit 6. System Physiology – Plant

Salicylic acid (SA) is a phenolic compound and derived from the phenylpropanoid pathway that accumulates to high levels as both free and glucoside conjugates in the vicinity of incompatible infection sites.