Antigen pieces are held within the binding groove of a cell surface protein called the major histocompatibility complex (MHC) molecule which recognized by T cell

TLS Online TPP Program

#Id: 9617

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 10154

#Unit 6. System Physiology – Plant

Strigolactones suppress shoot branching and stimulate cambial activity and secondary growth

TLS Online TPP Program

#Id: 9756

#Unit 6. System Physiology – Plant

JA initiates biosynthesis of defense proteins as a-amylase inhibitors. Most of these proteins interfere with the herbivore digestive system.

TLS Online TPP Program

#Id: 2446

#Unit 3. Fundamental Processes

One consequence of the rotation of DNA is illustrated In the two-domain model for transcription, as RNA polymerase moves with respect to the double helix, it generates positive supercoils (more tightly wound DNA) ahead of it and leaves negative supercoils (partially unwound DNA) behind it. For each helical turn traversed by RNA polymerase, + 1 turn is generated ahead and -1 turn behind.

TLS Online TPP Program

#Id: 9657

#Unit 4. Cell Communication and Cell Signaling

Negative feedback regulation by MAP Kinase

activated MAP kinase triggers an increase in the expression of dual-specificity phosphatases (DUSPs), particularly DUSP6.