ABC950 Sigma-Aldrich

Anti-PSAT1 Antibody

clone, from rabbit, purified by affinity chromatography

Synonym: Phosphoserine aminotransferase, Phosphohydroxythreonine aminotransferase, PSAT

  •  eCl@ss 32160702



Related Categories Alphabetical Index, Antibodies, PS-PS, Primary Antibodies
clone   polyclonal
biological source   rabbit
application(s)   immunocytochemistry: suitable
  western blot: suitable
species reactivity   human, mouse, human, mouse
species reactivity (predicted by homology)   rabbit (based on 100% sequence homology)
Quality Level   100
antibody product type   primary antibodies
purified by   affinity chromatography
NCBI accession no.   NP_478059
UniProt accession no.   Q9Y617


General description

Phosphoserine aminotransferase (EC; UniProt Q9Y617; also known as Phosphohydroxythreonine aminotransferase, PSAT) is encoded by the PSAT1 (also known as NLS2, PSA, PSATD) gene (Gene ID 29968) in human. PSAT1 is a class-V pyridoxal-phosphate-dependent aminotransferase family member that catalyzes the reversible conversion of 3-phosphohydroxypyruvate and to 1-phosphoserine, as well as the conversion of 3-hydroxy-2-oxo-4-phosphonooxybutanoate to 4-phosphonooxy-L-threonine, using, in both cases, L-glutamate as an amine donor, which is converted to 2-oxoglutarate. PSAT1 is involved in serine biosynthesis from glycolytic intermediates and PSAT1 upregulation is reported in non-small cell lung cancer (NSCLC) and colon cancer cells, while PSAT1 knockdoown is shown to suppress the proliferation of MDA-MB-468 and BT-20 breast cancer cells.


The immunogen sequence is 100% conserved in murine PSAT1 (UniProt Q99K85) and present in both spliced isoforms of human PSAT1 (Uniprot Q9Y617).


Epitope: Region between the two pyridoxal phosphate-binding domains.

KLH-conjugated linear peptide corresponding to a sequence within the region between the two pyridoxal phosphate-binding domains of human PSAT1.


Immunocytochemistry Analysis: A 1:250 dilution from a representative lot detected PSAT1 in A431, HeLa, HepG2, and NIH/3T3 cells.

Research Category
Apoptosis & Cancer

Research Sub Category
Enzymes & Biochemistry

This Anti-PSAT1 Antibody is validated for use in Western Blotting, Immunocytochemistry for the detection of PSAT1.

Target description

~40 kDa observed. 40.42 kDa (human isoform 1; Alpha) and 35.19 kDa (human isoform 2; Beta), 40.47 kDa (mouse) calculated.

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 Jurkat cell lysate.

Western Blotting Analysis: 0.2 µg/mL of this antibody detected PSAT1 in 10 µg of Jurkat cell 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


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

Related Content

Antibody Explorer | Buy Primary Antibodies & Secondary Antibodies

Primary, Secondary and Recombinant Monoclonal Antibodies Providing highly cited primary and secondary antibodies, we have you covered for your ELISA, western blot, immunohistochemistry or other assay...
Keywords: Alzheimer Disease, Cancer, Chromatin immunoprecipitation, Diagnostic, Enzyme-linked immunosorbent assay, Flow cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Neuroscience, Western blot

Related Products

Technical Service:

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

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?