Abstract
Phycocyanin is a natural brilliant blue colored, fluorescent protein, which is commonly present in cyanobacteria. In this study, C-phycocyanin was extracted and purified from Spirulina platensis, which are multicellular and filamentous cyanobacteria of greater importance because of its various biological and pharmacological potential. It was analyzed for its binding affinity towards blood cells, algal cells, genomic DNA of microalgae, and bacteria at different temperature and incubation time. It showed good binding affinity with these components even at low concentration of 2.5 μM. The purpose of this study was to evaluate the applicability of C-phycocyanin as a green fluorescent dye substituting carcinogenic chemical dyes.
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Acknowledgments
We are thankful to the former Director (Dr. P. K. Ghosh), Analytical Division & Centralized Instrument Facility, Salt & Marine Chemical Division, CSIR-CSMCRI. M. Mitra and K. Bhayani would like to acknowledge CSIR and CSC-0203 for financial support and AcSIR for PhD enrolment. We would also like to acknowledge Dr. Anamika Patel, Department of Biochemistry, Emory University; Atlanta for her valuable support. This manuscript has been assigned as CSIR-CSMCRI registration no 124/2015.
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Supplementary Fig. S1
(a-e) Absorption spectra of C-PC (Spirulina platensis) at different pH values and different C-PC concentrations (0.3 mg/ml, 0.2 mg/ml, 0.1 mg/ml) (JPEG 365 kb)
Supplementary Fig. S2
(a-c) Absorption spectra of C-PC (Spirulina platensis) at different ionic strength of phosphate buffer and different C-PC concentrations (0.3 mg/ml, 0.2 mg/ml, 0.1 mg/ml) (JPEG 227 kb)
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Paswan, M.B., Chudasama, M.M., Mitra, M. et al. Fluorescence Quenching Property of C-Phycocyanin from Spirulina platensis and its Binding Efficacy with Viable Cell Components. J Fluoresc 26, 577–583 (2016). https://doi.org/10.1007/s10895-015-1742-7
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DOI: https://doi.org/10.1007/s10895-015-1742-7