Small molecule
![Cell culture example of a small molecule as a tool instead of a protein. in cell culture to obtain a pancreatic lineage from mesodermal stem cells the retinoic acid signalling pathway must be activated while the sonic hedgehog pathway inhibited, which can be done by adding to the media anti-shh antibodies, Hedgehog interacting protein or cyclopamine, the first two are protein and the last a small molecule.[8]](/uploads/202501/30/Regen2.svg2119.png)
In molecular biology and pharmacology, a small molecule is a low molecular weight (<900 daltons) organic compound that may help regulate a biological process, with a size on the order of 10 m. Most drugs are small molecules.
Nonpeptide
英语百科
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