phycoerythrin การใช้

• Many applications and instruments were developed specifically for R-phycoerythrin.
• Fluorogenic reporters like phycoerythrin are used in a number of modern immunoassays.
• R-phycoerythrin is also produced by certain red algae.
• Phycoerythrin is an accessory pigment to the main chlorophyll pigments responsible for photosynthesis.
• R-phycoerythrin is predominantly produced by red algae.
• When bound to phycoerythrin, phycourobilin shows an absorption maximum around 495 nm.
• There are phycocyanin and phycoerythrin subunits that radiate out from this center like thin tubes.
• Red algae are red due to phycoerythrin.
• This chromophore is always a donor chromophore of phycoerythrins, since their acceptor chromophore is always phycoerythrobilin.
• In green light, the cells accumulate more phycoerythrin, whereas in red light they produce more phycocyanin.
• Photosynthesis occurs using phycoerythrin-light-harvesting phycobiliprotein which is normally found within heterocysts in other diazotrophs.
• Phycoerythrins are composed of ( ?? ) monomers, usually organised in a disk-shaped antenna rods ).
• Species lacking phycoerythrin have at least two disks of phycocyanin per rod, which is sufficient for maximum photosynthesis.
• The variations on this theme are due mainly to carotenoids and phycoerythrins that give the cells their red-brownish coloration.
• In the phycoerythrin family, the most known phycobilins are : phycoerythrobilin, the typical phycoerythrin acceptor chromophore, and sometimes phycourobilin.
• In the phycoerythrin family, the most known phycobilins are : phycoerythrobilin, the typical phycoerythrin acceptor chromophore, and sometimes phycourobilin.
• B-phycoerythrin ( B-PE ) is produced by certain red algae such as " Rhodella " sp.
• Crystal structures available in the Protein Data Bank contain in one ( ?? ) 2 or ( ??? ) 2 asymmetric unit of different phycoerythrins:
• In phycoerythrin PE545 above, one ? chain (-2 or-3 ) binds one molecule of billin, in other examples it binds two molecules.
• However, the plastids are very different from red algal plastids : phycobiliproteins are present but only in the thylakoid lumen and are present only as phycoerythrin or phycocyanin.