Low molecular weight cadmium—and copper-binding proteins from rat kidneys
- 1 June 1980
- journal article
- Published by Springer Nature in Biological Trace Element Research
- Vol. 2 (2) , 137-148
- https://doi.org/10.1007/bf02798592
Abstract
Three isoforms of rat kidney cadmium- and copper-binding proteins [(Cd, Cu)-BP 1, 2, and 3] were isolated. They contained from 75.0 up to 89.0 μg Cd/mg protein, from 7.5 up to 28.0 μg Cu/mg, and from 1.5 up to 12.0 μg Zn/mg protein. Apparent molecular weights of all three isoforms were of about 10,000. Their amino acid compositions were similar to that of rat metallothionein, with cysteine amounting to 25.8–32.7% of all amino acids.Keywords
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