MDM2

catalyzes the ubiquitinylation of p53 & targeting it for proteasomal degradation

TLS Online TPP Program

#Id: 5256

#Unit 7. System Physiology – Animal

Contractile cells constitute the majority of atrial & ventricular tissues.

TLS Online TPP Program

#Id: 10308

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 1267

#Unit 7. System Physiology – Animal

Zona glomerulosa lacks 17α-hydroxylase. 

TLS Online TPP Program

#Id: 10245

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 6704

#Unit 3. Fundamental Processes

The mechanism of pre-tRNA splicing differs in three fundamental ways from the mechanisms used by self-splicing introns and spliceosomes.

First, splicing of pre-tRNAs is catalyzed by proteins, not by RNAs. Second, a pre-tRNA intron is excised in one step thatentails simultaneous cleavage at both ends of the intron. Finally, hydrolysis of GTP and ATP is required to join the two tRNA halves generated by cleavage on either side of the intron.