Primary structure of keratinocyte transglutaminase.

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Primary structure of keratinocyte transglutaminase.

The nucleotide and deduced amino acid sequences of the coding regions of human and rat keratinocyte transglutaminases (protein-glutamine: amine gamma-glutamyltransferase; EC 2.3.2.13) have been determined. These yield proteins of approximately 90 kDa that are 92% identical, indicative of the conservation of important structural features. Alignments of amino acid sequences show substantial simil...

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Keratinocyte transglutaminase in proliferative vitreoretinopathy.

PURPOSE Proliferative vitreoretinopathy (PVR) is an excessive wound-healing process and the major complication in rhegmatogenous retinal detachment. The present study was designed to investigate the expression of keratinocyte transglutaminase (kTgase) in PVR membranes and retinal pigment epithelial (RPE) cells and to evaluate its expression in response to growth factors known to be increased in...

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Genomic structure of keratinocyte transglutaminase. Recruitment of new exon for modified function.

The gene for keratinocyte transglutaminase (TGK) spans 14 kilobase pairs and contains 15 exons. Many features of the TGK gene are very similar, if not identical, to those of the gene encoding the catalytic subunit of human clotting factor XIII: they have the same number of exons, corresponding introns always interrupt the coding region in the same phase of the codon, and most exons are of simil...

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Lamellar ichthyosis is genetically heterogeneous--cases with normal keratinocyte transglutaminase.

We recently identified mutations of the keratinocyte transglutaminase gene as a cause of lamellar ichthyosis. In this study we analyzed two sporadic cases of lamellar ichthyosis. Transglutaminase activity measured in membrane extracts from cultured differentiating keratinocytes was within the range observed in normal individuals. Western blot and Northern blot analysis revealed normal size and ...

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Defective stratum corneum and early neonatal death in mice lacking the gene for transglutaminase 1 (keratinocyte transglutaminase).

The stratum corneum of the skin serves as an effective barrier for maintenance of the internal milieu against the external environment. At the cell periphery of the stratum corneum is the cell envelope, a highly insoluble membranous structure composed of precursor proteins cross-linked by epsilon-(gamma-glutamyl)lysine bonds. Transglutaminase 1 (TGase 1; keratinocyte TGase), a membrane-bound is...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1990

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.87.23.9333