Phycocyaninyog tsaus xiav hmoov hmoov cais tawm ntawm spirulina. Feem ntau tshwm sim hauv cyanobacteria, algae liab thiab cryptophytes. Phycocyanin feem ntau tseem muab faib ua C-phycocyanin thiab R-phycocyanin. Lub qub yog feem ntau pom nyob rau hauv cyanobacteria, tom kawg yog pom nyob rau hauv liab algae, thiab cryptophycos muaj ob qho tib si. Nws lub luag haujlwm yog nqus lub teeb (txiv kab ntxwv-daj) lub zog thiab kis lub teeb zog. Nws tsis yog tsuas yog ib hom protein, tab sis kuj muaj cov khoom noj khoom haus zoo kawg nkaus xim, thiab tib lub sijhawm muaj cov zaub mov zoo.
Phycocyanin yog ib qho ntawm cov muaj protein tsawg. Nws tsis yog tsuas yog ci ci hauv xim, tab sis kuj muaj cov khoom noj muaj txiaj ntsig zoo nkauj nrog cov amino acid sib xyaw ua ke thiab cov ntsiab lus tseem ceeb amino acid. Phycocyanin yog dav siv los ua cov xim nplua nuj loj hauv cov zaub mov thiab tshuaj pleev ib ce.