TGF-β is synthesized with a, 

250-residue N-terminal prodomain

∼110-residue C-terminal TGF-β domain

TLS Online TPP Program

#Id: 7072

#Unit 3. Fundamental Processes

The charging of a tRNA with its cognate amino acid is a remarkably accurate process.

Experimental measurements indicate, for example, that at equal concentrations of isoleucine and valine, IleRS transfers ∼40,000 isoleucines to tRNAIle for every valine it so transfers.

TLS Online TPP Program

#Id: 6801

#Unit 3. Fundamental Processes

Binding of RISC complexes causes the bound mRNPs to associate with P bodies. Since P bodies are major sites of mRNA degradation where the decapping complex DPC1/DPC2, t5′→3′ exonuclease XRN1, and cytoplasmic exosomes are concentrated, mRNAs bound by several RISC complexes are degraded.

TLS Online TPP Program

#Id: 524

#Unit 2. Cellular Organization

Erwin Chargaff gave four “rules,” known as parity rule for duplex DNA.

TLS Online TPP Program

#Id: 1063

#Unit 5. Developmental Biology

The ER-localized protein, FT INTERACTING PROTEIN1 (FTIP1), is required for FT movement into the phloem translocation stream.

TLS Online TPP Program

#Id: 9620

#Unit 4. Cell Communication and Cell Signaling

HER3 (Erb-B3) can bind ligands but lacks a functional kinase domain and can signal only when heterodimerizes with HER2 (Erb-B2