Amazing Phycocyanin

Phycocyanin no tshwm sim raws li tus phycobiliprotein uas puas loj nyob rau ntau lub Cyanobacteria thiab ua ib phycobiliprotein lwm yam nyob hauv ib co qhov liab algae. Cov xim muaj ib qho pom haum pab 615 thiab 620 nm thiab fluorescence emission ntau ntawm ~ 650 nm. Nws molecular luj yog ntawm 70,000 thiab 110,000 Daltons. Cov xim yog li ntawm ob subunits, α thiab β, uas tau tshwm sim nyob rau hauv cov zauv sib npaug zos, tab sis lub caij nyoog ntau α thiab β officers uas tsim lub molecule yuav sib txawv ntawm cov hom. Α thiab β subunits muaj xwb cov PCB chromophore. Ntxiv rau qhov absorbing teeb ncaj qha, no xim xiav ib lees txais quanta ntawm phycoerythrin los fluorescent zog hloov hauv cov kab mob uas PE yog tam sim no. Lub fluorescence liab hauv C PC yog kis rau allophycocyanin.


Tus qauv ntawm cov bilin chromophores hauv Pc tshuaj yog zoo heev los bilirubin, ib yam khoom heme lawm. Bilirubin pom tias yog ib tug tseem ceeb physiologically antioxidant tiv thaiv hom reactive. Nws cheeb qhov uas cov kev hloov kho oxidative ntshav cov nqaijrog thiab uas muaj ntxhiab amino acid residues. Ntawm cov pa radicals qus los bilirubin lawm tau hais kom tiv thaiv cov albumin thiab raws li lwm lub hom phaj lom