نتایج جستجو برای: pyrroloquinoline quinone
تعداد نتایج: 5352 فیلتر نتایج به سال:
Based on the characterization of a PCR mutation of water-soluble glucose dehydrogenase possessing pyrroloquinoline quinone (PQQ), PQQGDH-B, Ser231Cys, we have constructed a series of Ser231 variants. The replacement of Ser231 to Cys, Met, Leu, Asp, Asn, His, or Lys resulted in an increase in thermal stability. Among these variants, Ser231Lys showed the highest level of thermal stability and als...
We have previously reported that pyrroloquinoline quinone (PQQ) prevents the amyloid formation of α-synuclein, amyloid β(1-42) (Aβ(1-42)), and mouse prion protein. Moreover, PQQ-modified α-synuclein and a proteolytic fragment of the PQQ-modified α-synuclein are able to inhibit the amyloid formation of α-synuclein. Here, we identified the peptide sequences that play an important role as PQQ-mod...
Pyrroloquinoline quinone (PQQ) is a redox active cofactor for bacterial quinoproteins. Dietary PQQ also has prominent physiological effects in mammals although no mammalian quinoprotein has yet been conclusively identified. Here we found that PQQ has substantial effects on the redox active mammalian selenoprotein thioredoxin reductase 1 (TrxR1). PQQ efficiently inhibited the activity of TrxR1 w...
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