CYP2D6*1 Allele

**Semantic type:** Gene or Genome

**Definition:** Human CYP2D6*1 allele is located in the vicinity of 22q13.1 and is approximately 4 kb in length. This allele, a variant form of the CYP2D6 wild-type allele, encodes cytochrome P450 2D6*1 protein. There are multiple haplotypes of the CYP2D6*1 allele. The nucleotide sequence of CYP2D6*1A is identical to that of the wild-type allele and exhibits no mutations. Four other haplotypes of the CYP2D6*1 allele exhibit SNPs that have no effect on the enzymatic activity of the corresponding cytochrome P450 2D6*10 proteins.

**Synonyms:** - CYP2D6*1 - CYP2D6, M4 - CYP2D6, M5 - CYP2D6, Wild-Type - Cytochrome P450, Family 2, Subfamily D, Polypeptide 6*1 Allele