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

TLS Online TPP Program

#Id: 9360

#Unit 4. Cell Communication and Cell Signaling

Smad2/3 become phosphorylated by active RI receptors and together with Smad4 move into the nucleus to activate gene transcription

TLS Online TPP Program

#Id: 2192

#Unit 10. Ecological Principles

Sequential changes in community structure over physical distance, primarily influenced by time, constitute a chronosequence

TLS Online TPP Program

#Id: 8329

#Unit 2. Cellular Organization

Treadmilling

Because the critical concentrations for the two ends are different, at steady state the free ATP–G-actin will be intermediate between Cc+ and Cc - , so the (+)end will grow and the (-)end will lose subunits.

TLS Online TPP Program

#Id: 612

#Unit 2. Cellular Organization

Repression-Trp aporepressor dimer binds high tryptophan, changes conformation with high affinity for trp operator Tryptophan is a corepressor

 

TLS Online TPP Program

#Id: 3512

#Unit 2. Cellular Organization

Exons are usually short, typically encoding fewer than 100 amino acids

Exon sequences are conserved by the negative selection of individuals in which the sequences have changed.