Abstract
The content of hyaluronan (HA), a polymer of the extracellular matrix involved in a variety of physiological and pathological processes, depends on the activity of synthetic (HAS) and degrading enzymes. Since HA is also involved in embryogenesis, we have used Xenopus as a model organism because information is available for HAS1 and HAS2, but not for HAS3. We report the sequence of xlHAS3 mRNA, its genomic organization and its expression in adult tissues as well as during embryonic development. Interestingly, evidence from in situ hybridization indicates that xlHAS3 expression is restricted to the developing inner ear and cement gland. In addition, we have correlated the expression pattern of the enzymes involved in HA metabolism with the HA content during development.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Amino Acid Sequence
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Animals
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Base Sequence
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Cloning, Molecular
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DNA, Complementary / chemistry
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DNA, Complementary / genetics
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Ear, Inner / embryology
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Ear, Inner / metabolism
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Embryo, Nonmammalian / metabolism
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Embryonic Development
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Epithelium / embryology
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Epithelium / metabolism
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Gene Expression Regulation, Developmental*
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Gene Expression Regulation, Enzymologic
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Genes / genetics
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Glucuronosyltransferase / genetics*
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Glucuronosyltransferase / metabolism
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Glycosyltransferases / genetics
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Hyaluronan Synthases
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Hyaluronic Acid / analysis
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Hyaluronic Acid / metabolism
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Hyaluronoglucosaminidase / genetics
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In Situ Hybridization
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Membrane Proteins / genetics
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Molecular Sequence Data
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Sequence Alignment
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Sequence Analysis, DNA
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Xenopus Proteins / genetics*
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Xenopus Proteins / metabolism
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Xenopus laevis / embryology
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Xenopus laevis / genetics*
Substances
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DNA, Complementary
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Membrane Proteins
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Xenopus Proteins
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Hyaluronic Acid
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Glycosyltransferases
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Glucuronosyltransferase
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HAS1 protein, Xenopus
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HAS3 protein, Xenopus
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Has2 protein, Xenopus
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Hyaluronan Synthases
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Hyal2 protein, Xenopus
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Hyaluronoglucosaminidase