منابع مشابه
Properties of Phycobilins from Porphyra Naiadum
The phycobilin pigments were freshly extracted from Porphyra naiadum in the cold. At least two types of phycoerythrin (I and II) can be distinguished by electrophoresis, chromatography, and spectral characteristics. At pH 5.0 phycoerythrin II has a relatively large negative charge, while phycoerythrin I is nearly iso-electric. At pH 7.0, however, phycoerythrin I has the larger negative charge. ...
متن کاملAntitumor function and mechanism of phycoerythrin from Porphyra haitanensis.
The anti-tumor effect of R-Phycoerythrin (R-PE) from Porphyra haitanensis was studied using cell line HeLa as an in vitro model and Sarcoma-180 (S180) tumor-bearing mice as an in vivo model. The results showed that the combination treatment of R-PE and photodynamic therapy PDT) significantly inhibited the growth of HeLa cells up to 81.5%, with a fair dose-effect relationship, but did not inhibi...
متن کاملProperties and Ultrastructure of Phycoerythrin From Porphyridium cruentum " 2
Phycoerythrin, a photosynthetic accessory pigment, was isolated from Porphyridium cruentum and examined by eleotron microscopy and disc gel electrophoresis. The absorption monomer, with maxima at 563, 545, and a shoulder at 500 nm, has a molecular weight of about 300,000. With phosphatungstic acid staining it appears as a tightly structured disc-shaped particle possessing a mean diameter of 101...
متن کاملTwo-photon-induced fluorescence from the phycoerythrin protein.
Two-photon-induced fluorescence is observed from the photodynamic phycobiliprotein phycoerythrin. Temporal, spectral, and intensity-dependent properties of the two-photon-induced fluorescence emission from phycoerythrin excited by a 1.06-mum laser beam are reported. The measured two-photon absorption cross section of phycoerythrin is an order of magnitude larger than that of Rhodamine 6G. The p...
متن کاملChromophore content of C-phycoerythrin from various Cyanobacteria.
The molar extinction coefficient for phycoerythrobilin (l a) was calculated by two independent methods. It is different from that of the cleaved chromophore, phycobiliviolin (2). By unfolding with urea or tryptic digestion, the chromophore absorption of C-phycoerythrin (PE) was determined free of any protein influence. The chromophore content of PE from various Cyanobacteria was determined with...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1956
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1539138