Tissue distribution of human calcium-binding protein (28 000 g mol-1).

Immunoreactive calcium-binding protein (28 000 g mol-1, L-CaBP) has been quantified using a specific radioimmunoassay to human cerebellar L-CaBP. The level of L-CaBP in post-mortem tissue samples varied from undetectable in muscle to 8 micrograms/mg-1 protein in the cerebellum and 16 micrograms mg-1 protein in the dentate nucleus. L-CaBP was found to be widely distributed throughout the nervous system while the only non-nervous tissue which contained appreciable levels was the renal cortex.