Selenocysteine is generated enzymatically from serine carried on a special tRNA that is charged by serine-tRNA synthetase. The Sec residues of selenoproteins are thought to participate in redox reactions such as those catalyzed by mammalian glutathione peroxidase and thioredoxin reductase

TLS Online TPP Program

#Id: 9278

#Unit 6. System Physiology – Plant

Type III/Type IV secretion systems play a major role in transfer of bacterial Nod factor in plant cell. 

TLS Online TPP Program

#Id: 2137

#Unit 8. Inheritance Biology

This suppression of recombination allows alleles adapted to a specific environment to remain together, unshuffled by recombination

TLS Online TPP Program

#Id: 5977

#Unit 10. Ecological Principles

Total NPP ( gm-2 yr-1 ) Tropical rain forest > Temperate forest > Tropical savannas > Mediterranan Shrub land > Temperate grass land > Crops > Boreal forest> Desert > Tundra 

TLS Online TPP Program

#Id: 628

#Unit 2. Cellular Organization

Transcription is initiated at the beginning of the 162 nucleotide mRNA leader encoded by a DNA region called trpL.

TLS Online TPP Program

#Id: 8403

#Unit 2. Cellular Organization

AP activates a  voltage gated Ca2+ channel in the T-tubule membrane, it triggers the opening of a Ca2+ -release channel in the closely associated SR membrane