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Nature. 1990 Sep 13;347(6289):151-6.

Identification of the 64K autoantigen in insulin-dependent diabetes as the GABA-synthesizing enzyme glutamic acid decarboxylase.

Author information

  • 1Department of Microbiology, University of California San Francisco School of Medicine 94143.

Erratum in

  • Nature 1990 Oct 25;347(6295):782. Camilli, PD [corrected to De Camilli, P].

Abstract

The pancreatic islet beta-cell autoantigen of relative molecular mass 64,000 (64K), which is a major target of autoantibodies associated with the development of insulin-dependent diabetes mellitus (IDDM) has been identified as glutamic acid decarboxylase, the biosynthesizing enzyme of the inhibitory neurotransmitter GABA (gamma-aminobutyric acid). Pancreatic beta cells and a subpopulation of central nervous system neurons express high levels of this enzyme. Autoantibodies against glutamic acid decarboxylase with a higher titre and increased epitope recognition compared with those usually associated with IDDM are found in stiff-man syndrome, a rare neurological disorder characterized by a high coincidence with IDDM.

PMID:
1697648
[PubMed - indexed for MEDLINE]
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