Lymphoid phosphatase (Lyp), also called LyPTP, Protein Tyrosine Phosphatase, Nonreceptor-type 22 (PTPN22), and PEST-domain Phosphatase (PEP), dephosphorylates tyrosine residues in proteins. Found primarily in bone marrow and lymphoid cell lines, an R620W gain-of-function mutation in Lyp has been associated with susceptibility to autoimmune diseases such as type I diabetes, rheumatoid arthritis, and lupus erythematosus. Mature PEP knockout mice have an excess of CD8 positive T cells and an exaggerated antigen-induced proliferative response.
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Key Product Details
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Label
Antibody Source
Product Specifications
Immunogen
Ser306-Ser684
Accession # Q9Y2R2
Specificity
Clonality
Host
Isotype
Scientific Data Images for Human Lyp Antibody (340113)
Detection of Human Lyp by Western Blot.
Western blot shows lysates of Jurkat human acute T cell leukemia cell line, Daudi human Burkitt's lymphoma cell line, and Ramos human Burkitt's lymphoma cell line. PVDF membrane was probed with 1 µg/mL of Mouse Anti-Human Lyp Monoclonal Antibody (Catalog # MAB3428) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for Lyp at approximately 108 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.Lyp in Human Lymph Node.
Lyp was detected in immersion fixed paraffin-embedded sections of human lymph node using 25 µg/mL Mouse Anti-Human Lyp Monoclonal Antibody (Catalog # MAB3428) overnight at 4 °C. Tissue was stained with the Anti-Mouse HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS002) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.Detection of Lyp by Western Blot
Lyp protein expression in Jurkat T cells 72 hours after the beginning of O/N transfection with different doses of siRNA s/a in DMPC/1/siRNA lipoplexes.Representative duplicate experiment among all replicas in S4 Fig. (A) Lyp expression in Jurkat T cells after O/N transfection with DMPC/1 alone (DMPC/1), 20 pmols of siRNA alone (siRNA20) and 20 pmols of siRNA complexed with DMPC/1 (DMPC/1/siRNA20) or cultured in RPMI. 20 pmols of siRNA complexed with DMPC/1 resulted in a 15% reduction of Lyp expression. (B) Same experiment as in A using 60 pmols of siRNA (siRNA60) complexed with DMPC/1 (DMPC/1/siRNA60). 33% reduction of Lyp expression was obtained. (C) Same experiment as in A using 100 pmols of siRNA (siRNA100) complexed with DMPC/1 (DMPC/1/siRNA100). 45% reduction of Lyp expression was obtained. (D) Representative WB image within all experimental groups is shown. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/28437437), licensed under a CC-BY license. Not internally tested by R&D Systems.Detection of Lyp by Western Blot
Lyp protein levels in Jurkat T cells 48 hours after the beginning of O/N transfection with different doses of siRNA s/a in DMPC/1/siRNA lipoplexes.Representative duplicate experiment among all replicas in S4 Fig. (A) Lyp expression in Jurkat T cells cultured in RPMI or after O/N transfection with DMPC/1, 20 pmols of siRNA and 20 pmols of siRNA in DMPC/1/siRNA lipoplexes (DMPC/1/siRNA20). 20 pmols of siRNA complexed with DMPC/1 resulted in a 31% reduction of Lyp expression. (B) Same experiment as in A using 60 pmols of siRNA complexed with DMPC/1 (DMPC/1/siRNA60). 39% reduction of Lyp expression was obtained. (C) Same experiment as in A using 100 pmols of siRNA complexed with DMPC/1 lipoplexes (DMPC/1/siRNA100). 47% reduction of Lyp expression was obtained. (D) Representative WB image within all experimental groups is shown. Under each blot Lyp O.D. values for every treatment are normalized over the corresponding beta -actin values. All percentages were expressed relatively to untransfected cells (RPMI) that is considered the 100% of basal Lyp expression. Graphs A, B, C show the mean values and their standard deviations. In all experimental conditions (vide infra), a decrease in Lyp protein level was not observed in cells treated with the liposome alone or, more importantly, in cells treated with the correspondent dose of the siRNA s/a free molecule. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/28437437), licensed under a CC-BY license. Not internally tested by R&D Systems.Applications for Human Lyp Antibody (340113)
Immunohistochemistry
Sample: Immersion fixed paraffin-embedded sections of human lymph node
Western Blot
Sample: Jurkat human acute T cell leukemia cell line, Daudi human Burkitt's lymphoma cell line, and Ramos human Burkitt's lymphoma cell line
Reviewed Applications
Read 1 review rated 5 using MAB3428 in the following applications:
Formulation, Preparation, and Storage
Purification
Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
Formulation
Shipping
Stability & Storage
- 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: Lyp
Long Name
Alternate Names
Gene Symbol
UniProt
Additional Lyp Products
Product Documents for Human Lyp Antibody (340113)
Certificate of Analysis
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Product Specific Notices for Human Lyp Antibody (340113)
For research use only
Related Research Areas
Citations for Human Lyp Antibody (340113)
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Application: ELISASample Tested: See PMID 23219421Species: HumanVerified Customer | Posted 02/20/2015
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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
- 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