The lacA gene encodes thiogalactoside transacetylase, which rids the cell of toxic thiogalactosides that also get transported by lacY.

TLS Online TPP Program

#Id: 7352

#Unit 11. Evolution and Behavior

Mutation

Mutation has changed the allelic frequency. it increases genetic variation within populations and between population.

TLS Online TPP Program

#Id: 10443

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 10389

#Unit 4. Cell Communication and Cell Signaling

Class II, but not class I, presentation is inhibited by treatment of the cells with an agent that blocks endocytic processing within the cell (chloroquine).

TLS Online TPP Program

#Id: 7938

#Unit 2. Cellular Organization

The SRP and the nascent polypeptide chain–ribosome complex bind to the SRP receptor in the ER membrane. This interaction is strengthened by the binding of GTP to both the SRP and its receptor.

TLS Online TPP Program

#Id: 1413

#Unit 4. Cell Communication and Cell Signaling

When the Ca2+ level rises, Ca2+ binds CaM.