Mutations that remove the 2’-OH of the A residue at the 30 end of the P-site tRNA result in a 106-fold reduction in catalysis rates. This “substrate-assisted catalysis”

2’-OH of the P-site tRNA may act as part of a “proton shuttle”

TLS Online TPP Program

#Id: 6477

#Unit 3. Fundamental Processes

Start point, is the first base of mRNA to be A Initiator (Inr) is Py2CAPy5, where Py stands for any pyrimidine. The Inr is contained between positions -3 and +5. TATA box, usually located, 25 bp upstream in its location at -25

TLS Online TPP Program

#Id: 10506

#Unit 4. Cell Communication and Cell Signaling

Human Bcl-2 and worm CED-9 both proteins contain a single TM domain and are localized to the outer mitochondrial membrane

TLS Online TPP Program

#Id: 6690

#Unit 3. Fundamental Processes

 The SL RNA provides an exon that is connected to the first exon of an mRNA by trans-splicing. The reaction involves the same interactions as nuclear cis splicing but generates a Y-shaped RNA instead of a lariat.

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#Id: 555

#Unit 2. Cellular Organization

The calcium-dipicolinic acid complex play a role in the heat resistance of endospore.

TLS Online TPP Program

#Id: 9193

#Unit 11. Evolution and Behavior

The allelic frequency at equilibrium (qˆ) depends on the relative fitnesses (usually expressed as selection coefficients) of the two homozygotes: