TLS Online TPP Program

#Id: 593

#Unit 2. Cellular Organization

Lytic growth proceeds when PL and PR remain switched on while PRM is kept off. Lysogenic growth, in contrast, is a consequence of PL and PR being switched off and PRM switched on.

TLS Online TPP Program

#Id: 594

#Unit 2. Cellular Organization

cI maintains lysogeny and cro cause lytic cycle

TLS Online TPP Program

#Id: 595

#Unit 2. Cellular Organization

How cro cause lytic cycle- proteolytic cleavage of lambda repressor

 

TLS Online TPP Program

#Id: 596

#Unit 2. Cellular Organization

When DNA is extensively damaged (such as by UV light. RecA protein binds to this damaged, single-stranded DNA, activating the protein's coprotease activity. While bound to DNA, the RecA protein facilitates cleavage and inactivation of the Lex and Lambda repressor. 

TLS Online TPP Program

#Id: 597

#Unit 2. Cellular Organization

Activator cII, Controls the Decision between Lytic and Lysogenic Growth upon Infection of a New Host

TLS Online TPP Program

#Id: 598

#Unit 2. Cellular Organization

Like the Lambda repressor, the cII protein is a transcriptional activator. It binds to a site upstream of a promoter called PRE (for repressor establishment) and stimulates transcription of the cI (repressor) gene from that promoter.