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Gene. 1992 Jul 15;116(2):245-51.

Exons I and VII of the gene (Ker10) encoding human keratin 10 undergo structural rearrangements within repeats.

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  • 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow.


A genomic fragment containing the K51 gene previously isolated from a rat genomic library by hybridization with the v-mos probe in nonstringent conditions [Chumakov et al., Dokl. Akad. Nauk SSSR 290 (1986) 1252-1254], resembles a human keratin type-I-encoding gene [Shvets et al., Mol. Biol. 24 (1990) 663-677]. This genomic clone, K51, has been used as a probe to search for related human genes. A recombinant clone, HK51, with a 1.5-kb insert, was isolated from a human embryonic skin cDNA library, and its nucleotide (nt) sequence was determined. Analysis has shown that the cloned cDNA encodes human keratin 10 (Ker10). All presently known nt sequences of the human Ker10-encoding gene (Ker10) are not identical. Differences are concentrated in the 5'-end of the first exon and in the middle of the seventh exon within repeats. In spite of structural rearrangements in two of eight exons, the reading frame and position of the stop codon are preserved. The genetic rearrangements cause changes in hydrophobicity profiles of the N and C termini of Ker10. It was also noticed that insertion of one nt leads to the formation of an unusual 3'-end of the transcript.

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