E. coli SSB- Note that this protein is not a DNA-unwinding protein; its function is to stabilize DNA that is already in the single-stranded condition

TLS Online TPP Program

#Id: 9083

#Unit 4. Cell Communication and Cell Signaling

Cholera toxin, secreted by Vibrio cholerae in the intestine of an infected person, is a heterodimeric protein (AB). 

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: 4949

#Unit 6. System Physiology – Plant

PHY genes encode two types of phytochrome

TLS Online TPP Program

#Id: 3040

#Unit 3. Fundamental Processes

DNA ligase makes the bond that connects the 3 ' end of one Okazaki fragment to the 5 ' beginning of the next fragment.

TLS Online TPP Program

#Id: 3159

#Unit 3. Fundamental Processes

 Eukaryotic cells have many DNA polymerases. The replication enzymes operate with high fidelity. Except  for the β enzyme, the repair enzymes all have low fidelity.