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Evolutionary history of the 11p15 human mucin gene family. - PubMed - NCBI

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J Mol Evol. 1998 Jan;46(1):102-6.

Evolutionary history of the 11p15 human mucin gene family.

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INSERM U377 Laboratoire GĂ©rard Biserte, place de Verdun, 59045 Lille Cedex, France.


The four human mucin genes MUC6, MUC2, MUC5AC, and MUC5B are located at chromosome 11p15.5. It has been demonstrated that the three mucins MUC2, MUC5AC, and MUC5B contain several Cys-subdomains of 108 amino acid residues. In contrast, little information is available concerning MUC6. These Cys-subdomains contain 10 cysteine residues that have a highly conserved position. We present here a coherent probable evolutionary history of this human gene family after comparison of the nucleotide sequences of these Cys-subdomains. The three MUC loci MUC2, MUC5AC, and MUC5B may have evolved from a common ancestral gene by two successive duplications. Moreover, we can postulate that MUC5AC and MUC5B have evolved in a concerted manner, while MUC2 has evolved separately.

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