Words similar to porphyrins

Example sentences for: porphyrins

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Since living entities require a continual source of usable energy, we should be able to detect a chemical signature of life in the form of mixtures of redox molecules such as porphyrins, quinones, and flavins that transport electrons along redox gradients between electron donors and acceptors [ 13 ] . We examined methods to extract and detect the components of electron transport chains that might be used to indicate the presence of life on site in extraterrestrial locations.
Porphyrins were obtained from Midcentury Chemicals (Chicago, Illinois) or Frontier Scientific (Logan, Utah) and used as received.
Other porphyrins are tetraphenylporphyrin derivatives, e.g., TPP2F is tetraphenylporphyrin with a fluoro group at the 2-position on each phenyl ring.
Porphyrins and metalloporphyrins have also been shown to have antiviral activity against HIV [ 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 ] . Previous studies indicated that some porphyrins inhibit the interaction between the virus envelope protein and its receptors [ 28 31 32 33 34 35 36 37 38 ] . We have shown also that porphyrins block infection by HIV-1 and that this activity appears to be a result of an interaction with the envelope protein [ 38 ] . In this regard, the compounds that were active in blocking infection by HIV-1 tended to be sulfonated compounds or other negatively charged compounds.
Initial screening of porphyrins and phthalocyanines (Figure 1) involved more than 100 different compounds.