Serine/threonine-protein kinase PRKY is an

enzyme An enzyme () is a protein that acts as a biological catalyst by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different mol ...

that in humans is encoded by the ''PRKY''

gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protei ...

. This gene encodes a member of the cAMP-dependent serine/threonine protein kinase family. This gene is located on chromosome Y, near the boundary of the pseudoautosomal region. Abnormal recombination between this gene and a related gene on chromosome X is a frequent cause of XX males and XY females.

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