Alkylating agents are chemicals that donate alkyl groups to other molecules as nitrogen mustard, and methyl and ethyl methane sulfonate (MMS and EMS).

TLS Online TPP Program

#Id: 1383

#Unit 4. Cell Communication and Cell Signaling

Formin protein nucleate the assembly of unbranched filaments, (FH1 and FH2 domains-Actin nucleation by the formin FH2 domain).

Formins are activated by membrane-bound Rho-GTP, a Ras-related small GTPase.

The Arp2/3 Complex Nucleates Branched Filament Assembly.

TLS Online TPP Program

#Id: 932

#Unit 5. Developmental Biology

A totipotent stem cell can generate all cell types of both embryonic and extraembryonic lineages. 

TLS Online TPP Program

#Id: 8194

#Unit 2. Cellular Organization

After assembly of the matrix protein-Pex5-Pex14 complex, the matrix protein dissociates from Pex5 and is released into the peroxisomal matrix.

TLS Online TPP Program

#Id: 1651

#Unit 4. Cell Communication and Cell Signaling

J-chain is found in only IgM and IgA.

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