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Structure and expression of the ovine Hoxc-13 gene 总被引:7,自引:0,他引:7
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Pruett ND Tkatchenko TV Jave-Suarez L Jacobs DF Potter CS Tkatchenko AV Schweizer J Awgulewitsch A 《The Journal of biological chemistry》2004,279(49):51524-51533
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Structure and expression of genes for a class of cysteine-rich proteins of the cuticle layers of differentiating wool and hair follicles
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《The Journal of cell biology》1990,111(6):2587-2600
The major histological components of the hair follicle are the hair cortex and cuticle. The hair cuticle cells encase and protect the cortex and undergo a different developmental program to that of the cortex. We report the molecular characterization of a set of evolutionarily conserved hair genes which are transcribed in the hair cuticle late in follicle development. Two genes were isolated and characterized, one expressed in the human follicle and one in the sheep follicle. Each gene encodes a small protein of 16 kD, containing greater than 50 cysteine residues, ranging from 31 to 36 mol% cysteine. Their high cysteine content and in vitro expression data identify them as ultra-high-sulfur (UHS) keratin proteins. The predicted proteins are composed almost entirely of cysteine-rich and glycine-rich repeats. Genomic blots reveal that the UHS keratin proteins are encoded by related multigene families in both the human and sheep genomes. Tissue in situ hybridization demonstrates that the expression of both genes is localized to the hair fiber cuticle and occurs at a late stage in fiber morphogenesis. 相似文献