All Photos(11)



Anti-GAD67 Antibody, clone 4B5 ZooMAb® Rabbit Monoclonal

enhanced validationgreener alternative

recombinant, expressed in HEK 293 cells






expressed in HEK 293 cells




purified antibody

antibody product type

primary antibodies


4B5, monoclonal
recombinant monoclonal


ZooMAb® learn more




calculated mol wt ~66.90 kDa
observed mol wt ~60 kDa

species reactivity

human, rat

species reactivity (predicted by homology)

bovine, mouse, monkey


antibody small pack of 25 μL


Waste Prevention
Designing Safer Chemicals
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.


recombinant expression
Learn more about Antibody Enhanced Validation


affinity binding assay: suitable
immunofluorescence: suitable
immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable
western blot: suitable










We are committed to bringing you greener alternative products, which adhere to one or more of The 12 Principles of Green Chemistry.This antibody is Preservative-free, produced without the harm or sacrifice of animals and exceptionally stable to allow for ambient shipping and storage if needed and thus aligns with "Waste Prevention", "Designing Safer Chemicals" and "Design for Energy Efficiency". Click here for more information.
ZooMAb antibodies represent an entirely new generation of recombinant monoclonal antibodies.

Each ZooMAb antibody is manufactured using our proprietary recombinant expression system, purified to homogeneity, and precisely dispensed to produce robust and highly reproducible lot-to-lot consistency. Only top-performing clones are released for use by researchers. Each antibody is validated for high specificity and affinity across multiple applications, including its most commonly used application. ZooMAb antibodies are reliably available and ready to ship when you need them.


Clone 4B5 is a ZooMAb® rabbit recombinant monoclonal antibody that specifically detects Glutamate decarboxylase 1 (GAD67). It targets an epitope within 20 amino acids from the N-terminal region.


KLH-conjugated linear peptide corresponding to 20 amino acids from the N-terminal region of human Glutamate decarboxylase 1 (GAD67).


Quality Control Testing

Evaluated by Western Blotting in Rat Brain tissue lysate.

Western Blotting Analysis: A 1:1,000 dilution of this antibody detected GAD67 in Rat brain tissue lysate.

Tested Applications

Western Blotting Analysis: A 1:1,000 dilution from a representative lot detected GAD67 in Human brain tissue lysate.

Immunohistochemistry (Paraffin) Analysis: A 1:100 dilution from a representative lot detected GAD67 in human cerebral cortex tissue sections.

Immunofluorescence Analysis: A 1:100 dilution from a representative lot detected GAD67 in human cerebral cortex tissue sections.

Affinity Binding Assay: A representative lot of this antibody bound GAD67 peptide with a KD of 2.3 x 10-8 in an affinity binding assay.

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user
Anti-GAD67, clone 4B5 ZooMAb®, Cat. No. ZRB1090, is a recombinant Rabbit monoclonal antibody that specifically targets GAD67 and is tested for use in Affinity Binding Assay, Immunofluorescence, Immunohistochemistry (Paraffin), and Western Blotting.


Glutamate decarboxylase 1 (UniProt: Q99259; also known as EC:, 67 kDa glutamic acid decarboxylase, GAD-67, Glutamate decarboxylase 67 kDa isoform) is encoded by the GAD1 (also known as GAD, GAD67) gene (Gene ID:2571) in human. GAD67 is responsible for the conversion of glutamic acid to gamma-aminobutyric acid (GABA), the major inhibitory transmitter in higher brain regions, and putative paracrine hormone in pancreatic islets. Two molecular forms of GAD have been described (65 kDa and 67 kDa) that display 64% amino acid homology and both forms are expressed in the CNS, pancreatic islet cells, testis, oviduct, and ovary. Between the two isoforms, GAD67 is responsible for over 90% of basal GABA synthesis and is produced at limiting levels in the brain. These isoforms are regionally distributed in cytoplasm in the brains of rats and mice. GAD67 expression is shown to change during neural development in rat spinal cord and its expression seems to be particularly plastic and can change in response to experimental manipulation and disease progression. Mutations in GAD1 gene are known to cause spastic quadriplegic cerebral palsy, a non-progressive disorder of movement and/or posture resulting from defects in the developing central nervous system. This ZooMAb® recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals.


Purified recombinant mouse monoclonal antibody IgG, lyophilized in PBS, 5% Trehalose, normal appearance a coarse or translucent resin. Contains no biocide or preservatives, such as azide, or any animal by-products. Larger pack sizes provided as multiples of 25 μL.


300 μg/mL after reconstitution at 25 μL per vial. Please refer to guidance on suggested starting dilutions and/or titers per application and sample type.


Recommend storage of lyophilized product at 2-8°C; Before reconstitution, micro-centrifuge vials briefly to spin down material to bottom of the vial; Reconstitute each vial by adding 25 μL of filtered lab grade water or PBS; Reconstituted antibodies can be stored at 2-8°C, or -20°C for long term storage. Avoid repeated freeze-thaws.


ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


11 - Combustible Solids




Not applicable


Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service