Initiation of replication at oriC starts with formation of a complex that ultimately requires six proteins: DnaA, DnaB, DnaC, HU, gyrase, and SSB.

TLS Online TPP Program

#Id: 7069

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 3328

#Unit 3. Fundamental Processes

The significance of transcription-coupled repair is that it focuses repair enzymes on DNA (genes) being actively transcribed.

TLS Online TPP Program

#Id: 9262

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 7073

#Unit 3. Fundamental Processes

This rejection of noncognate tRNAs at a stage of the reaction that precedes the synthesis of misacylated tRNA is sometimes referred to as kinetic proofreading.

TLS Online TPP Program

#Id: 3302

#Unit 6. System Physiology – Plant

In actively respiring mitochondria, 0.1% to as much as 4% of the O2 used in respiration forms •O2^2- — more than enough to have lethal effects unless the free radical is quickly disposed of.