Anti-ALDH18A1 antibody produced in rabbit

Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution

Anti-P5CS antibody produced in rabbit, Anti-Δ1-pyrroline-5-carboxylate synthetase antibody produced in rabbit, Anti-Aldehyde dehydrogenase 18 family member A1 antibody produced in rabbit
Human Protein Atlas Number:
Pricing and availability is not currently available.

biological source


Quality Level

antibody form

affinity isolated antibody

antibody product type

primary antibodies



product line

Prestige Antibodies® Powered by Atlas Antibodies


buffered aqueous glycerol solution

species reactivity

rat, mouse, human


antibody small pack of 25 μL


immunoblotting: 0.04-0.4 μg/mL
immunofluorescence: 0.25-2 μg/mL
immunohistochemistry: 1:50-1:200

immunogen sequence




UniProt accession no.

shipped in

wet ice

storage temp.


Gene Information

human ... ALDH18A1(5832)

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General description

Aldehyde dehydrogenase 18 family member A1 (ALDH18A1) is localized to the mitochondrial inner membrane. It is an ATP- and NADPH-dependent bifunctional enzyme. The gene encoding this protein is present on chromosome 10.


Delta-1-pyrroline-5-carboxylate synthetase recombinant protein epitope signature tag (PrEST)


All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org)and as a result, are supported by the most extensive characterization in the industry.

The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.

Biochem/physiol Actions

Aldehyde dehydrogenase 18 family member A1 (ALDH18A1) catalyzes the reduction of glutamate to Δ1-pyrroline-5-carboxylate which is a critical step in the de-novo biosynthesis of proline, arginine and ornithine. It is a bifunctional enzyme having both γ-glutamyl kinase (γ-GK) and γ-glutamyl phosphate reductase (γ-GPR) activities. The enzyme undergoes alternative splicing to give rise to two isoforms which differ by a two-amino acid insert at the N-terminus of the γ-glutamyl kinase active site. The short isoform is highly active in the gut and it takes part in arginine biosynthesis. The long isoform is involved in the synthesis of proline from glutamate and is expressed in many tissues.

Features and Benefits

Prestige Antibodies® are highly characterized and extensively validated antibodies with the added benefit of all available characterization data for each target being accessible via the Human Protein Atlas portal linked just below the product name at the top of this page. The uniqueness and low cross-reactivity of the Prestige Antibodies® to other proteins are due to a thorough selection of antigen regions, affinity purification, and stringent selection. Prestige antigen controls are available for every corresponding Prestige Antibody and can be found in the linkage section.

Every Prestige Antibody is tested in the following ways:
  • IHC tissue array of 44 normal human tissues and 20 of the most common cancer type tissues.
  • Protein array of 364 human recombinant protein fragments.


Corresponding Antigen APREST71373.

Physical form

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide

Legal Information

Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC


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.

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dust mask type N95 (US),Eyeshields,Gloves


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Madeleine L Craze et al.
British journal of cancer, 118(2), 258-265 (2017-11-24)
Altered cellular metabolism is a hallmark of cancer and some are reliant on glutamine for sustained proliferation and survival. We hypothesise that the glutamine-proline regulatory axis has a key role in breast cancer (BC) in the highly proliferative classes. Glutaminase...
Paola Marcato et al.
Stem cells (Dayton, Ohio), 29(1), 32-45 (2011-02-01)
Cancer stem cells (CSCs) are proposed to initiate cancer and propagate metastasis. Breast CSCs identified by aldehyde dehydrogenase (ALDH) activity are highly tumorigenic in xenograft models. However, in patient breast tumor immunohistological studies, where CSCs are identified by expression of...
M R Baumgartner et al.
Human molecular genetics, 9(19), 2853-2858 (2000-11-25)
delta(1)-pyrroline-5-carboxylate synthase (P5CS), a bifunctional ATP- and NADPH-dependent mitochondrial enzyme, catalyzes the reduction of glutamate to delta(1)-pyrroline-5-carboxylate, a critical step in the biosynthesis of proline, ornithine and arginine. Recently, we reported the cloning and expression of human and murine P5CS...
C A Hu et al.
The Journal of biological chemistry, 274(10), 6754-6762 (1999-02-26)
Delta1-Pyrroline-5-carboxylate synthase (P5CS; EC not assigned), a mitochondrial inner membrane, ATP- and NADPH-dependent, bifunctional enzyme, catalyzes the reduction of glutamate to Delta1-pyrroline-5-carboxylate, a critical step in the de novo biosynthesis of proline and ornithine. We utilized published plant P5CS sequence...

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