However, these mutations also interfere with the synthesis of melanin pigment, lightening the color of the hair; therefore, individuals with PKU frequently have light brown or blond hair.

TLS Online TPP Program

#Id: 6389

#Unit 2. Cellular Organization

CAP–cAMP complex stimulates transcription of the lac operon by binding to an activator-binding site adjacent to the promoter and helping RNA polymerase bind to the promoter.CAP–cAMP complex stimulates transcription of the lac operon by binding to an activator-binding site adjacent to the promoter and helping RNA polymerase bind to the promoter.

TLS Online TPP Program

#Id: 6390

#Unit 2. Cellular Organization

CAP–cAMP increases the rate of formation of the closed promoter complex, CAP–cAMP provides CPC for conversion to the open promoter complex.  Thus, the net effect of CAP–cAMP is to increase the rate of open promoter complex formation.

TLS Online TPP Program

#Id: 6391

#Unit 2. Cellular Organization

CAP–cAMP binds upstream to promoters DNA and target bends the DNA considerably about 100 degrees

TLS Online TPP Program

#Id: 6392

#Unit 2. Cellular Organization

Stimulation of b-galactosidase synthesis by cAMP with wild-type and mutant CAP.

TLS Online TPP Program

#Id: 6393

#Unit 2. Cellular Organization

The E. coli trp operon contains the 5 genes Trp-EDCBA for the anabolic enzymes to make the tryptophan.

TLS Online TPP Program

#Id: 6394

#Unit 2. Cellular Organization

Major enzyme is Tryptophan Synthase