Tyrosine is first iodized to monoiodotyrosine and then to diiodotyrosine. Then, more and more of the iodotyrosine residues become coupled with one another

TLS Online TPP Program

#Id: 4633

#Unit 13. Methods in Biology

3H thymidine uptake assays were the first to be used routinely to measure cell division in lymphocyte cultures

TLS Online TPP Program

#Id: 10088

#Unit 4. Cell Communication and Cell Signaling

Integrins typically exhibit low affinities for their ligands, with dissociation constants (Kd) between 10−6 and 10−7 mol/L.

TLS Online TPP Program

#Id: 8444

#Unit 1. Molecules and their Interaction Relevant to Biology

Both the pi helix and the 310 helix occur rarely and usually only at the ends of a helices or as single-tum helices. They are not energetically favorable, since the backbone atoms are too tightly packed in the 310 helix and so loosely packed in the n helix that there is a hole through the middle. 

Only in the a helix are the backbone atoms properly packed to provide a stable structure.

TLS Online TPP Program

#Id: 6689

#Unit 3. Fundamental Processes

Trans-splicing is rare in multicellular eukaryotes, it occurs as the primary mechanism to process precursor RNA into mature, translatable mRNAs in some organisms, such as trypanosomes and nematodes.

TLS Online TPP Program

#Id: 2542

#Unit 13. Methods in Biology

The partially hybridized primers may become extended by the DNA polymerase and are amplified; sometimes this may monopolize the PCR .