TLS Online TPP Program

#Id: 5032

#Unit 3. Fundamental Processes

FtsZ functions at an early stage of septum formation.

Early in the division cycle, FtsZ is localized throughout the cytoplasm, but prior to cell division FtsZ becomes localized in a ring around the circumference at the mid-cell position.

The structure is called the Z-ring.

TLS Online TPP Program

#Id: 5033

#Unit 3. Fundamental Processes

The structure of FtsZ resembles tubulin

FtsZ has GTPase activity, and GTP cleavage is used to support the oligomerization of FtsZ monomers into the ring structure.

TLS Online TPP Program

#Id: 5034

#Unit 3. Fundamental Processes

Each haploid bacterium typically has a single chromosome, so this type of replication control is called single copy.

TLS Online TPP Program

#Id: 5035

#Unit 3. Fundamental Processes

The replicon model proposed two components that controlled the initiation of replication: the replicator and the initiator. The replicator is defined as the cis-acting DNA sequences that are sufficient to direct the initiation of DNA replication.

TLS Online TPP Program

#Id: 5036

#Unit 3. Fundamental Processes

The second component of the replicon model is the initiator protein.

This protein specifically recognizes a DNA element in the replicator and activates the initiation of replication

TLS Online TPP Program

#Id: 5037

#Unit 3. Fundamental Processes