Auxin-induced proton extrusion acidifies the cell wall and increases cell extension

Auxin increase the rate of proton extrusion (wall acidification), and the kinetics of proton extrusion should closely match those of auxin-induced growth.

TLS Online TPP Program

#Id: 6759

#Unit 3. Fundamental Processes

PNPase a 3’ to 5’ exonucleases in E. coli, are unable to progress through double-stranded regions. Thus, the stem-loop structure at the 3’ end of many bacterial mRNAs protects the mRNA from direct 3’ attack.

TLS Online TPP Program

#Id: 7420

#Unit 5. Developmental Biology

one of Antennapedia’s functions is to repress the genes that would trigger antenna and eye development.

TLS Online TPP Program

#Id: 3667

#Unit 3. Fundamental Processes

Valyl-tRNA synthetase can sterically exclude isoleucine from its catalytic pocket because isoleucine is larger than valine.

TLS Online TPP Program

#Id: 6510

#Unit 7. System Physiology – Animal

Tyrosine is transported into catecholamine-secreting neurons via a Na+ - dependent carrier

TLS Online TPP Program

#Id: 8038

#Unit 1. Molecules and their Interaction Relevant to Biology

His ionisation series

1------pK1-----pKr--------pKr------14