This gene encodes one of several forms of glutamic acid decarboxylase, identified as a major autoantigen in insulin-dependent diabetes. The enzyme encoded is responsible for catalyzing the production of gamma-aminobutyric acid from L-glutamic acid. A pathogenic role for this enzyme has been identified in the human pancreas since it has been identified as an autoantibody and an autoreactive T cell target in insulin-dependent diabetes. This gene may also play a role in the stiff man syndrome. Alternative splicing results in multiple transcript variants that encode the same protein.
Background References
1. Budhram A et al. Clinical spectrum of high-titre GAD65 antibodies. J Neurol Neurosurg Psychiatry. 2021 Feb
2. Budhram A et al. Positive Predictive Value of Anti-GAD65 ELISA Cut-Offs for Neurological Autoimmunity. Can J Neurol Sci. 2023 Sep
Western blot analysis of GAD65 on different lysates with Chicken anti-GAD65 antibody (HA601473) at 1/5,000 dilution.
Lane 1: Mouse brain tissue lysate Lane 2: Rat brain tissue lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 65 kDa Observed band size: 65 kDa
Exposure time: 1 minute; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA601473) at 1/5,000 dilution was used in primary antibody dilution (K1803) at 4℃ overnight. Rabbit Anti-Chicken IgY - HRP Secondary Antibody (HA1026) at 1/50,000 dilution was used for 1 hour at room temperature.
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