Listeria is a food-borne bacterial pathogen has on its surface a protein ActA, which mimics an NPF that efficiently activates the Arp2/3 complex.

TLS Online TPP Program

#Id: 10018

#XL - T Zoology

The phosphorylated Ci is proteolytically cleaved by the ubiquitin-proteasome pathway, generating an N-terminal fragment Ci75, which functions as a transcriptional repressor of Hh target genes.

TLS Online TPP Program

#Id: 8341

#XL - Q Biochemistry

Two major classes of actin-nucleating proteins:

1. Formins nucleate the assembly of unbranched filaments 

2. Arp2/3 complex nucleates the assembly of branched actin networks

TLS Online TPP Program

#Id: 9267

#XL - S Microbiology

Diazotrophs are able to catalyze the enzymatic reduction of this compound to ammonia (NH3) using the enzyme nitrogenase

TLS Online TPP Program

#Id: 9870

#XL - R Botany

Upon absorbing UV-B photons, the tryptophans undergo structural changes that break the salt bridges, leading to the dissociation of the two functionally active monomers. The monomers then interact with COP1–SPA complexes to activate gene expression

TLS Online TPP Program

#Id: 7048

#XL - T Zoology

Theory of recapitulation - Ernst Haeckel