Human Xg Antibody

Catalog # Availability Size / Price Qty
Detection of Xg in Human Erythrocytes by Flow Cytometry.
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Product Details
Supplemental Products

Human Xg Antibody Summary

Species Reactivity
Detects human Xg in direct ELISAs and Western blots.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant human Xg
Accession # P55808
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.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human Xg
Flow Cytometry
0.25 µg/106 cells
See below
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

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

Flow Cytometry Detection of Xg antibody in Human Erythrocytes antibody by Flow Cytometry. View Larger

Detection of Xg in Human Erythrocytes by Flow Cytometry. Human blood erythrocytes were stained with Goat Anti-Human Xg Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3699, filled histogram) or isotype control antibody (Catalog # AB-108-C, open histogram), followed by Phycoerythrin-conjugated Anti-Goat IgG Secondary Antibody (Catalog # F0107).

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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: Xg

Xg, also known as PBDX (pseudoautosomal boundary divided on the X chromosome), is a type I transmembrane glycoprotein that belongs to the CD99 family. It is an erythrocyte membrane protein that is used as the basis for the Xg blood group system. Mature Xg is a 26 kDa glycoprotein that consists of a 121 aa extracellular domain, a transmembrane segment, and a 17 aa cytoplasmic tail. Xg isoforms with either a 15 aa insertion or a deletion of nearly the entire ECD have been reported. Within the extracellular domain, human Xg shares 100% aa sequence identity with mouse Xg.

Long Name
Xg Blood Group
Entrez Gene IDs
7499 (Human)
Alternate Names
glycoprotein Xg; MGC118758; MGC118759; MGC118760; MGC118761; PBDX; Protein PBDX; Xg blood group (pseudoautosomal boundary-divided on the X chromosome); Xg blood group; XG glycoprotein; Xg; XGPY

Product Datasheets

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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

Goat IgG (H+L) Antibody


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