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Identification of a New Splice Variant of the Human ABCC6 Transporter.


ABSTRACT: ABCC6 is a member of the adenosine triphosphate-binding cassette (ABC) gene subfamily C that encodes a protein (MRP6) involved in active transport of intracellular compounds to the extracellular environment. Mutations in ABCC6 cause pseudoxanthoma elasticum (PXE), an autosomal recessive disorder of the connective tissue characterized by progressive calcification of elastic structures in the skin, the eyes, and the cardiovascular system. MRP6 is codified by 31 exons and contains 1503 amino acids. In addition to a full-length transcript of ABCC6, we have identified an alternatively spliced variant of ABCC6 from a cDNA of human liver that lacks exons 19 and 24. The novel isoform was named ABCC6 ?19?24. PCR analysis from cDNA of cell cultures of primary human hepatocites and embryonic kidney confirms the presence of the ABCC6?19?24 isoform. Western blot analysis of the embryonic kidney cells shows a band corresponding to the molecular weight of the truncated protein.

SUBMITTER: Armentano MF 

PROVIDER: S-EPMC3023033 | biostudies-literature | 2008

REPOSITORIES: biostudies-literature

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Identification of a New Splice Variant of the Human ABCC6 Transporter.

Armentano Maria Francesca MF   Ostuni Angela A   Infantino Vittoria V   Iacobazzi Vito V   Castiglione Morelli Maria Antonietta MA   Bisaccia Faustino F  

Research letters in biochemistry 20081016


ABCC6 is a member of the adenosine triphosphate-binding cassette (ABC) gene subfamily C that encodes a protein (MRP6) involved in active transport of intracellular compounds to the extracellular environment. Mutations in ABCC6 cause pseudoxanthoma elasticum (PXE), an autosomal recessive disorder of the connective tissue characterized by progressive calcification of elastic structures in the skin, the eyes, and the cardiovascular system. MRP6 is codified by 31 exons and contains 1503 amino acids.  ...[more]

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