Human Helios Antibody

Catalog #: MAB73092 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
MAB73092
MAB73092-SP

Detection of Helios in Human PBMCs by Flow Cytometry.

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Human Helios Antibody Summary

Species Reactivity

Human

Specificity

Detects human Helios in direct ELISA.

Source

Monoclonal Mouse IgG₁ Clone # 736440

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

E. coli-derived recombinant human Helios
Met1-Gln97
Accession # Q9UKS7

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.

Applications

Recommended Concentration

Sample

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Intracellular Staining by Flow Cytometry

2.5 µg/10⁶ cells

See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Intracellular Staining by Flow Cytometry

Detection of Helios antibody in Human PBMCs antibody by Flow Cytometry.

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Detection of Helios in Human PBMCs by Flow Cytometry. Human peripheral blood mononuclear cells (PBMCs) were stained with Mouse Anti-Human CD4 APC-conjugated Monoclonal Antibody (Catalog # FAB3791A) and either (A) Mouse Anti-Human Helios Monoclonal Antibody (Catalog # MAB73092) or (B) Mouse IgG₁Isotype Control (Catalog # MAB002) followed by Phycoerythrin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0102B). To facilitate intracellular staining, cells were fixed with paraformaldehyde and permeabilized with saponin.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile 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.

Background: Helios

Helios, also known as IKZF2, is a 70 kDa DNA-binding transcription regulator in the Ikaros family that contains four N-terminal C2H2-type zinc finger domains (aa 112-219) and two C-terminal zinc finger domains (aa 471-523). Helios is expressed in developing hematopoietic and epithelial tissues and in adult T cells and thymic-derived regulatory T cells (Treg). It forms homodimers and also heterodimers with other Ikaros family proteins Ikaros, Pegasus, Eos, and Aiolos. Alternate splicing of human Helios generates a short isoform that lacks three of the the N-terminal zinc finger domains. This isoform is overexpressed in T cell leukemias where it can still dimerize with Ikaros proteins but functions as a dominant negative regulator. Within aa 1-97, human and mouse Helios share 96% aa sequence identity.

Long Name

DNA-binding Protein Helios

Entrez Gene IDs

22807 (Human); 22779 (Mouse)

Alternate Names

Helios; IKAROS family zinc finger 2 (Helios); Ikaros family zinc finger protein 2; IKZF2; MGC34330; subfamily 1A, 2 (Helios); zinc finger DNA binding protein Helios; zinc finger protein Helios; ZNF1A2; ZNFN1A2