The constituents of storage granules in the dermal glands of Xenopus laevis. Structure of a basic polypeptide deduced from cloned cDNA.
Mature dermal glands of Xenopus laevis contain storage granules with a characteristic ellipsoid shape. A few major proteins are present in these granules, including two with the same amino-terminal sequence and apparent molecular masses of 26 and 28 kDa. Using antibodies against these proteins, positive clones were isolated from a cDNA expression library prepared from skin of X. laevis. One cDNA encodes a preprotein with a typical signal sequence and a mature part of 187 amino acids. The protein shows internal homology at both the amino and carboxyl end. The latter part has a very high content of basic amino acids.
Berger
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H
Molecular Biology Institute, Austrian Academy of Sciences, Salzburg.
Kreil
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G
D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D000906:Antibodies / Q000276:immunology; D001483:Base Sequence; D003001:Cloning, Molecular; D003594:Cytoplasmic Granules / Q000378:metabolism*; D004247:DNA / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel; D008969:Molecular Sequence Data; D010455:Peptides / Q000276:immunology / Q000378:metabolism*; D011487:Protein Conformation; D012689:Sequence Homology, Nucleic Acid; D012867:Skin / Q000378:metabolism*; D014982:Xenopus laevis / Q000378:metabolism*
D000596:Amino Acids; D000906:Antibodies; D010455:Peptides; D004247:DNA