Class I presentation requires internal synthesis of virus protein, as shown by the requirement that the target cell be infected by live virus, and by the inhibition of class I presentation observed when protein synthesis was blocked by the inhibitor emetine.

TLS Online TPP Program

#Id: 8351

#Section 3: Genetics, Cellular and Molecular Biology

WASp activation requires two signals (This type of two-signal input, called coincidence detection):

1. regulatory phospholipid PIP2

2. small GTP-binding protein Cdc42

TLS Online TPP Program

#Id: 8331

#Section 3: Genetics, Cellular and Molecular Biology

Cytochalasin D, 

a fungal alkaloid, depolymerizes actin filaments by binding to the (+) end of F-actin.

TLS Online TPP Program

#Id: 8082

#Section 2: General Biology

TLS Online TPP Program

#Id: 8182

#Section 3: Genetics, Cellular and Molecular Biology

When excess H2O2 accumulates in the cell, catalase converts it to H2O through the reaction.

TLS Online TPP Program

#Id: 9287

#Section 2: General Biology