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Mr ca. 60000 • CAS [9013-20-1]
Avidin from Streptomyces avidinii, isolated from fermentation filtrates by ion exchange chromatography.
Activity (biotin binding) min. 14.6 U/mg protein.
Unit definition: one unit of streptavidin will bind 1 µg of biotin.
Protein content: 90 - 100 %
Isoelectric point: 6.5 - 7.5
Storage Temperature: -15 °C to -25 °C