ABN1466 Sigma-Aldrich


clone, from rabbit, purified by affinity chromatography

Synonym: Glutaminase kidney isoform, mitochondrial, K-glutaminase, L-glutamine amidohydrolase

  •  eCl@ss 32160702



Related Categories Alphabetical Index, Antibodies, GD-GL, Primary Antibodies
clone   polyclonal
biological source   rabbit
application(s)   western blot: suitable
species reactivity   human, human, human
shipped in   ambient
Quality Level   100
antibody product type   primary antibodies
purified by   affinity chromatography
NCBI accession no.   NP_055720
UniProt accession no.   O94925
Gene Information   human ... GLS(2744)


General description

Glutaminase kidney isoform, mitochondrial (UniProt: O94925; also known as EC:, GLS, K-glutaminase, L-glutamine amidohydrolase) is encoded by the GLS (also known as GLS1, KIAA0838) gene (Gene ID: 2744) in human. GLS catalyzes the first reaction in the primary pathway for the renal catabolism of glutamine. It is primarily expressed in the brain and kidney and plays an essential role in generating energy for metabolism, synthesizing the brain neurotransmitter glutamate and maintaining acid-base balance in the kidney. During normal acid-base balance, the kidney extraction of plasma glutamine is low, however, during metabolic acidosis, about one third of the plasma glutamine is extracted and metabolized in a single pass through kidneys. Three isoforms of glutaminase have been described in humans. They are produced via alternate splicing. Isoform 1 and 3 are activated by phosphate, while the isoform 3 lacks catalytic activity. Isoform 1 is highly expressed in brain and kidney, but is not detected in liver. On the other hand, isoform 3 is highly expressed in astrocytoma, ganglioglioma, ependymoma. Lower levels of isoform 3 are reported in placenta, lung, pancreas and kidney, but it is not detected in liver. Isoform 2 is expressed in cardiac and skeletal muscle.


This polyclonal antibody detects the Glutaminase kidney isoform, mitochondrial, in human. Also detects GLS in the neural cortex. It targets an epitope within 16 amino acids fromt he C-terminal region.


KLH-conjugated linear peptide corresponding to 16 amino acids from the C-terminal region.


Anti-GLS, Cat. No. ABN1466, is a highly specific rabbit polyclonal antibody that targets Glutaminase kidney isoform, mitochondrial, and has been tested in Western Blotting.

Research Category

Western Blotting Analysis: 2 µg/mL from a representative lot detected GLS in 10 µg of human kidney tissue lysate.

Target description

~65 kDa observed; 73.46 kDa calculated. Uncharacterized bands may be observed in some lysate(s).

Physical form

Affinity Purified

Purified rabbit polyclonal antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.


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.


Evaluated by Western Blotting in human neural cortex tissue lysate.

Western Blotting Analysis: 2 µg/mL of this antibody detected GLS in 10 µg of human neural cortex tissue lysate.

Other Notes

Concentration: Please refer to lot specific datasheet.

Safety & Documentation

Safety Information

WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


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