In a phenomenon called codon bias, some codons for a particular amino acid are used more frequently (sometimes much more frequently) than others. A minimum of 32 tRNAs are required to translate all 61 codons (31 to encode the amino acids and 1 for initiation) due to wobble positioning

TLS Online TPP Program

#Id: 2311

#Unit 3. Fundamental Processes

P-TEFb activates elongation, splicing and polyadenylation and phosphorylates

  Serine 2 CTD

  TAT-SF1

  SPT5

TLS Online TPP Program

#Id: 1475

#Unit 4. Cell Communication and Cell Signaling

25 percent of acute myeloid leukemias are characterized by DNA hypomethylation that is due to inactivating mutations in an enzyme that catalyzes the methylation of CpG dinucleotides.

TLS Online TPP Program

#Id: 8475

#Unit 1. Molecules and their Interaction Relevant to Biology

Repeat period is shorter for the parallel conformation (6.5 Å, vs. 7 Å for antiparallel)

TLS Online TPP Program

#Id: 1763

#Unit 4. Cell Communication and Cell Signaling

Peripheral tolerance, which renders some self-reactive lymphocytes in secondary lymphoid tissues inactive and generates others that actively inhibit immune responses against self

TLS Online TPP Program

#Id: 1627

#Unit 4. Cell Communication and Cell Signaling

Psoriasin Binds and sequesters divalent cations