When polymerase binding causes transition to the open complex and initiates transcription. This gives a low level of constitutive expression called the basal level. 

Binding of RNA polymerase is the rate-limiting step in this case.

TLS Online TPP Program

#Id: 3170

#Unit 3. Fundamental Processes

The ter site is recognized by a unidirectional contrahelicase (called Tus in E. coli and RTP in B. subtilis) that recognizes the consensus sequence and prevents the replication fork from proceeding.

TLS Online TPP Program

#Id: 675

#Unit 3. Fundamental Processes

For the synthesis of telomere, Only dGTP and dTTP are needed for the activity.

TLS Online TPP Program

#Id: 6222

#Unit 12. Applied Biology

The genomes of all retroviruses contain the three genes gag, pol and env.

TLS Online TPP Program

#Id: 7492

#Unit 4. Cell Communication and Cell Signaling

Exonuclease trimming sometimes occurs at the VDJ and VJ junctions, causing loss of nucleotides.

TLS Online TPP Program

#Id: 8763

#Unit 1. Molecules and their Interaction Relevant to Biology

Thermophilic proteins have increased amounts of Arg, increased occurrence of Ala in helices, and Gly/Ala substitutions (which affect the entropy of the denatured state, and thus its free energy) and increased number of salt bridges.