Cytosolic Sulfotransferase 1A1 (SULT1A1; also phenol sulfotransferase 1 and thermostable phenol sulfotransferase) is a 35 kDa enzyme belonging to the sulfotransferase 1 family of proteins. Human SULT1A1 is 295 amino acids (aa) in length. Human SULT1A1 shares 78% and 73% aa identity with rat and mouse SULT1A1, respectively. SULT1A1 exists as a homodimer and is expressed in liver, lung, adrenal gland, brain, platelets, and skin. Functionally, it catalyzes the sulfate conjugation of catecholamines, phenolic drugs and neurotransmitter. It also mediates the metabolic activation of carcinogenic N-hydroxyarylamines to DNA binding products and could participate as a modulating factor of cancer risk.
Human Cytosolic Sulfotransferase 1A1/SULT1A1 Antibody
R&D Systems | Catalog # MAB5546
Key Product Details
Species Reactivity
Human
Applications
Immunohistochemistry, Western Blot, Immunoprecipitation
Label
Unconjugated
Antibody Source
Monoclonal Mouse IgG1 Clone # 638708
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Product Specifications
Immunogen
E. coli-derived recombinant human Cytosolic Sulfotransferase 1A1/SULT1A1
Glu2-Leu295
Accession # P50225
Glu2-Leu295
Accession # P50225
Specificity
Detects human Cytosolic Sulfotransferase 1A1/SULT1A1 in direct ELISAs and Western blots. In direct ELISAs, 100% cross-reactivity with recombinant human (rh) SULT1A3 and rhSULT1C4 and approximately 10% cross-reactivity with rhSULT1B1 is observed. No cross-reactivity with rhSULT1E1, 2A1, 2B1, or 4A1 is observed.
Clonality
Monoclonal
Host
Mouse
Isotype
IgG1
Scientific Data Images for Human Cytosolic Sulfotransferase 1A1/SULT1A1 Antibody
Detection of Human Cytosolic Sulfotransferase 1A1/SULT1A1 by Western Blot.
Western blot shows lysates of human liver tissue. PVDF Membrane was probed with 0.5 µg/mL of Human Cytosolic Sulfotransferase 1A1/SULT1A1 Monoclonal Antibody (Catalog # MAB5546) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for Cytosolic Sulfotransferase 1A1/SULT1A1 at approximately 35 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.Cytosolic Sulfotransferase 1A1/SULT1A1 in Human Brain.
Cytosolic Sulfotransferase 1A1/SULT1A1 was detected in immersion fixed paraffin-embedded sections of human brain using Human Cytosolic Sulfotransferase 1A1/SULT1A1 Monoclonal Antibody (Catalog # MAB5546) at 15 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Mouse HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS002) and counterstained with hematoxylin (blue). Specific staining was localized to neurons and glial cells (punctate). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.Detection of Cytosolic Sulfotransferase 1A1/SULT1A1 by Western Blot
SULT1A1 is highly expressed in primary human monocyte-derived macrophages (MDMs). a The cellular sulfonation pathway. The first step of the cellular sulfonation pathway involves import through a sulfate transporter of a sulfate ion that is then used as a substrate by either 3′-phosphoadenosine-5′phosphosulfate (PAPS) synthetase enzymes PAPSS1 or PAPSS2. These proteins catalyze two enzymatic steps to generate PAPS, the high-energy universal sulfonate-donor from sulfate and two molecules of ATP. PAPS can be transported across the Golgi membrane and used by the Golgi sulfotransferases to generate sulfonated proteins, glycoproteins, glycoproteins, glycolipids, and proteoglycans. Alternatively, PAPS can be used by cytosolic sulfotransferases (SULTS) to sulfonate small molecules such as hormones, neurotransmitters, and xenobiotics. b Human CD4+ T cells and CD14+ monocytes were isolated from donor PBMCs by magnetic bead isolation. Resting CD4+ T cells were lysed directly after separation, and the remaining CD4+ T cells were activated using CD3/CD28 beads for three days. Monocytes were cultured for 7 days in the presence of 20 ng/ml M-CSF, were lysed, subjected to gel electrophoresis, and immunoblotting was performed to detect SULT1A1 or the loading control Ku86 protein Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/26906565), licensed under a CC-BY license. Not internally tested by R&D Systems.Applications for Human Cytosolic Sulfotransferase 1A1/SULT1A1 Antibody
Application
Recommended Usage
Immunohistochemistry
8-25 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human brain
Sample: Immersion fixed paraffin-embedded sections of human brain
Immunoprecipitation
25 µg/mL
Sample: Cell lysates spiked with Recombinant Human SULT1A1 (Catalog # 5546-ST), see our available Western blot detection antibodies
Sample: Cell lysates spiked with Recombinant Human SULT1A1 (Catalog # 5546-ST), see our available Western blot detection antibodies
Western Blot
0.5 µg/mL
Sample: Human liver tissue
Sample: Human liver tissue
Formulation, Preparation, and Storage
Purification
Protein A or G purified from hybridoma culture supernatant
Reconstitution
Sterile PBS to a final concentration of 0.5 mg/mL. For liquid material, refer to CoA for concentration.
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Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Calculators
Background: Cytosolic Sulfotransferase 1A1/SULT1A1
Alternate Names
P-PST, PST, ST1A3, STP1, SULT1A1, TSPST1
Gene Symbol
SULT1A1
UniProt
Additional Cytosolic Sulfotransferase 1A1/SULT1A1 Products
Product Documents for Human Cytosolic Sulfotransferase 1A1/SULT1A1 Antibody
Certificate of Analysis
To download a Certificate of Analysis, please enter a lot or batch number in the search box below.
Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human Cytosolic Sulfotransferase 1A1/SULT1A1 Antibody
For research use only
Related Research Areas
Citations for Human Cytosolic Sulfotransferase 1A1/SULT1A1 Antibody
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Antigen Retrieval Protocol (PIER)
- Antigen Retrieval for Frozen Sections Protocol
- Appropriate Fixation of IHC/ICC Samples
- Cellular Response to Hypoxia Protocols
- Chromogenic IHC Staining of Formalin-Fixed Paraffin-Embedded (FFPE) Tissue Protocol
- Chromogenic Immunohistochemistry Staining of Frozen Tissue
- ClariTSA™ Fluorophore Kits
- Detection & Visualization of Antibody Binding
- Fluorescent IHC Staining of Frozen Tissue Protocol
- Graphic Protocol for Heat-induced Epitope Retrieval
- Graphic Protocol for the Preparation and Fluorescent IHC Staining of Frozen Tissue Sections
- Graphic Protocol for the Preparation and Fluorescent IHC Staining of Paraffin-embedded Tissue Sections
- Graphic Protocol for the Preparation of Gelatin-coated Slides for Histological Tissue Sections
- IHC Sample Preparation (Frozen sections vs Paraffin)
- Immunofluorescent IHC Staining of Formalin-Fixed Paraffin-Embedded (FFPE) Tissue Protocol
- Immunohistochemistry (IHC) and Immunocytochemistry (ICC) Protocols
- Immunohistochemistry Frozen Troubleshooting
- Immunohistochemistry Paraffin Troubleshooting
- Immunoprecipitation Protocol
- Preparing Samples for IHC/ICC Experiments
- Preventing Non-Specific Staining (Non-Specific Binding)
- Primary Antibody Selection & Optimization
- Protocol for Heat-Induced Epitope Retrieval (HIER)
- Protocol for Making a 4% Formaldehyde Solution in PBS
- Protocol for VisUCyte™ HRP Polymer Detection Reagent
- Protocol for the Preparation & Fixation of Cells on Coverslips
- Protocol for the Preparation and Chromogenic IHC Staining of Frozen Tissue Sections
- Protocol for the Preparation and Chromogenic IHC Staining of Frozen Tissue Sections - Graphic
- Protocol for the Preparation and Chromogenic IHC Staining of Paraffin-embedded Tissue Sections
- Protocol for the Preparation and Chromogenic IHC Staining of Paraffin-embedded Tissue Sections - Graphic
- Protocol for the Preparation and Fluorescent IHC Staining of Frozen Tissue Sections
- Protocol for the Preparation and Fluorescent IHC Staining of Paraffin-embedded Tissue Sections
- Protocol for the Preparation of Gelatin-coated Slides for Histological Tissue Sections
- R&D Systems Quality Control Western Blot Protocol
- TUNEL and Active Caspase-3 Detection by IHC/ICC Protocol
- The Importance of IHC/ICC Controls
- Troubleshooting Guide: Immunohistochemistry
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
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