Thermosynechococcaceae as a source of thermostable C-PHYCOCYANIN (cas 11016-15-2)s: properties and molecular insights
-
Add time:08/18/2019 Source:sciencedirect.com
This study describes characterisation of three thermophilic strains of cyanobacteria belonging to Thermosynechococcaceae and their utilisation as a source of thermostable C-phycocyanin. Three strains NIES 2133, NIES 2134 and PCC 6715 have been cultivated in two types of growth media and two temperatures: 45 and 50 °C and assessed for C-phycocyanin productivity. Among these strains Synechococcus lividus sp. PCC 6715, phylogenetically closer to Thermosynechococcus sp. clade than other Synechococcaceae, has been selected for subsequent study to characterise its C-phycocyanin. The strain showed faster growth rates than the other two and appeared to utilise different bicarbonate uptake mechanism based on SbtA, whilst BCT1 mechanism was found in NIES2133 and 2134. Higher growth rates translated to larger overall C-phycocyanin productivity. C-phycocyanin has been purified using chromatographic methods and its thermostability and pH stability has been assessed against that of Spirulina. Results have shown that PCC 6715 C-phycocyanin is one of the most stable proteins of this type reported to date. It exhibits 90% stability after 5-hour incubation at 50 °C and about 70% stability after 2-week incubation at the same temperature. PCC 6715 phycocyanins show high stability at acidic pH at both 4 °C and 50 °C, whilst at 50 °C maintain 100% stability during 4-hour incubation at pH 4.0 to 8.0. PCC 6715 phycocyanin shows good long-term stability characteristics and could be considered as a thermostable replacement for Spirulina phycocyanin. Analysis of molecular model of PCC 6715 C-phycocyanins and crystal structures of other phycocyanins reveals interesting pattern of amino acid substitutions that are present in thermophilic proteins that could have significant impact on their significantly higher thermostability. Phycocyanins from thermostable cyanobacteria exhibit evolutionarily conserved amino acid substitutions localised in the single structural hotspot of the protein that result in additional stabilising interactions within and between protein subunits when compared to proteins from mesophilic counterparts.
We also recommend Trading Suppliers and Manufacturers of C-PHYCOCYANIN (cas 11016-15-2). Pls Click Website Link as below: cas 11016-15-2 suppliers
Prev:Enhancement of C-PHYCOCYANIN (cas 11016-15-2) purity using negative chromatography with chitosan-modified nanofiber membrane
Next:Evaluation of the co-production of total carotenoids, C-PHYCOCYANIN (cas 11016-15-2) and polyhydroxyalkanoates by Arthrospira platensis) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Preparation and characterization of C-PHYCOCYANIN (cas 11016-15-2) peptide grafted N-succinyl chitosan by enzyme method08/23/2019
- Different characteristics of C-PHYCOCYANIN (cas 11016-15-2) (C-PC) in two strains of the extremophilic Galdieria phlegrea08/22/2019
- The use of poly(3-hydroxybutyrate), C-PHYCOCYANIN (cas 11016-15-2), and phenolic compounds extracted from Spirulina sp. LEB 18 in latex paint formulations08/21/2019
- C-PHYCOCYANIN (cas 11016-15-2) extraction assisted by pulsed electric field from Artrosphira platensis08/20/2019
- Evaluation of the co-production of total carotenoids, C-PHYCOCYANIN (cas 11016-15-2) and polyhydroxyalkanoates by Arthrospira platensis08/19/2019
- Enhancement of C-PHYCOCYANIN (cas 11016-15-2) purity using negative chromatography with chitosan-modified nanofiber membrane08/17/2019
- Continuous aqueous two-phase extraction of microalgal C-PHYCOCYANIN (cas 11016-15-2) using a coiled flow inverter08/16/2019
- Original articlePhysical extraction and extrusion entrapment of C-PHYCOCYANIN (cas 11016-15-2) from Arthrospira platensis☆08/15/2019
- Liquid biphasic flotation for the purification of C-PHYCOCYANIN (cas 11016-15-2) from Spirulina platensis microalga08/14/2019