calspermin

calspermin
High affinity calcium/calmodulin binding protein found in postmeiotic male germ cells. Represents the C-terminal 169 amino acids of protein kinase IV and is produced from a promoter located in an intron of the protein kinase IV gene. Lacks the kinase domain.

Dictionary of molecular biology. 2004.

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  • protein kinase IV — A calcium/calmodulin dependent protein kinase (53 kD) found in brain, T cells and postmeiotic male germ cells. Present in nucleus where it phosphorylates and activates CREB and CREM tau. See calspermin and reticalmin. May be important in… …   Dictionary of molecular biology

  • reticalmin — Calcium/calmodulin dependent protein kinase IV like protein (35 kD) found in rat retina, mainly in outer segment of photoreceptors and dendrites of inner plexiform layers. See also calspermin …   Dictionary of molecular biology

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