Product Details

Uniprot No.

P02724

Target Names

GYPA

Alternative Names

Glycophorin-A (MN sialoglycoprotein) (PAS-2) (Sialoglycoprotein alpha) (CD antigen CD235a), GYPA, GPA

Species Reactivity

Human

Immunogen

A synthesized peptide derived from Human GYPA

Immunogen Species

Homo sapiens (Human)

Conjugate

Non-conjugated

Clonality

Monoclonal

Isotype

Rabbit IgG

Clone No.

27A8

Purification Method

Affinity-chromatography

Concentration

It differs from different batches. Please contact us to confirm it.

Buffer

Rabbit IgG in 10mM phosphate buffered saline , pH 7.4, 150mM sodium chloride, 0.05% BSA, 0.02% sodium azide and 50% glycerol.

Form

Liquid

Tested Applications

ELISA, FC

Recommended Dilution

Application	Recommended Dilution
FC	1:50-1:200

Protocols

ELISA Protocol
Flow Cytometry (FC) Protocol

Troubleshooting and FAQs

Antibody FAQs

Storage

Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.

Lead Time

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

Description

Glycophorin A (GYPA), also designated CD235a, serves as the major sialoglycoprotein on the erythrocyte surface, where it plays essential roles in determining MN blood group antigens and maintaining red blood cell membrane integrity. This heavily glycosylated transmembrane protein contributes to the negative surface charge that prevents erythrocyte aggregation, making it a valuable marker for erythroid lineage identification and a subject of interest in hematological and cardiovascular research.

This recombinant monoclonal antibody, clone 27A8, offers the reproducibility and consistency that demanding research protocols require. Because recombinant antibodies are produced from defined genetic sequences rather than hybridoma cultures, you can expect uniform performance across different lots, eliminating the variability that can compromise longitudinal studies or multi-site collaborations. The rabbit host origin combined with monoclonal specificity provides high-affinity binding characteristics while the affinity-chromatography purification ensures minimal background in sensitive detection systems.

Validation studies demonstrate effective performance in flow cytometry applications, with recommended dilutions ranging from 1:50 to 1:200. Testing on K562 cells, an erythroid leukemia line that expresses GYPA, showed clear positive signal separation from isotype control, confirming the antibody's utility for surface marker detection on human erythroid cells. The antibody is also validated for ELISA, providing flexibility across different experimental platforms.

For researchers investigating erythropoiesis, blood group antigen biology, or cardiovascular conditions involving red blood cell dynamics, this antibody delivers the specificity and batch-to-batch reliability needed for confident results. The unconjugated format allows pairing with your preferred secondary detection system for optimized signal in your specific workflow.

Usage

For Research Use Only. Not for use in diagnostic or therapeutic procedures.

Related Products

Target Background

Function

Glycophorin A is the major intrinsic membrane protein of the erythrocyte. The N-terminal glycosylated segment, which lies outside the erythrocyte membrane, has MN blood group receptors. Appears to be important for the function of SLC4A1 and is required for high activity of SLC4A1. May be involved in translocation of SLC4A1 to the plasma membrane. Is a receptor for influenza virus. Is a receptor for Plasmodium falciparum erythrocyte-binding antigen 175 (EBA-175); binding of EBA-175 is dependent on sialic acid residues of the O-linked glycans. Appears to be a receptor for Hepatitis A virus (HAV).

Gene References into Functions

Cell viability and surface expression of transferrin receptor (CD71) and glycophorin A (GPA) were analyzed before and after re-culture by flow cytometry. These studies show differential sensitivities of these surface proteins on K562 cells to proteases, and suggest molecular mechanisms of transmembrane protein transport and cycling. PMID: 28980921
a complex structural rearrangement involving the loss of GYPB and gain of two GYPB-A hybrid genes reduces the risk of severe malaria by 40% and has recently increased in frequency in parts of Kenya PMID: 28522690
The authors show that Plasmodium falciparum EBA-175 mediates substantial changes in the deformability of erythrocytes by binding to glycophorin A and activating a phosphorylation cascade that includes erythrocyte cytoskeletal proteins resulting in changes in the viscoelastic properties of the host cell. PMID: 28226242
While weak interactions between glycophorin and band 3 undoubtedly exist, glycophorin A and band 3 must have separate interactions in the membrane that control their lateral mobility. PMID: 27580023
CD235a could be the most sensitive predictor similar to CD4. PMID: 25716234
Glycophorin-A-rich microparticles are released from evolving growing thrombi into the distal perfusing blood, and can be measured in peripheral blood. CD235a(+) cMPs may constitute a novel systemic biomarker of ongoing thrombosis. PMID: 26239059
The authors demonstrate that the initial vacuolar membrane around internalized Babesia divergens is formed from protein and lipid components of the red blood cells plasma membrane, including band 3, glycophorin A and spectrin. PMID: 25628009
GPA-deficient band 3 null erythrocytes are resistant to malaria infection. PMID: 25778531
MNSs blood group glycophorin variants in Taiwan: a genotype-serotype correlation study of 'Mi(a)' and St(a) with report of two new alleles for St(a). PMID: 24858913
PfEBA-175 engages multiple glycans of GpA encoded by exon 3 and that the presentation of glycans is likely required for high-avidity binding. PMID: 25205096
The expression of glycophorin A and osteoprotegerin is locally increased in carotid atherosclerotic lesions of symptomatic compared to asymptomatic patients. PMID: 23722820
These data demonstrate the importance of PfEBA175 regions other than the DBL domains in the interaction with GYPA and merit their inclusion in an EBA175-based vaccine. PMID: 24043627
GPA-NN mutagens contributed to the pathogenesis of chronic benzene poisoning. PMID: 17456399
Beta-branched residues adjacent to GG4 motifs promote the efficient association of glycophorin A transmembrane helices. PMID: 21072853
Data suggest that glycophorin A (Gpa) increases expression and activity of Cl-/HCO3- exchanger Ae1, that G719D mutation renders Ae1 mutant constructs GPA-unresponsive, and suggests a role for Ae1 amino acids 22-28 in GPA responsiveness. PMID: 21455273
the GG genotype of the rs 1489759 HHIP single-nucleotide polymorphism (SNP) and the CC genotype of the rs 2202507 GYPA SNP confers a ''protective'' effect on COPD (OR 0.59, p50.006 for HHIP and OR50.65, p50.006 for GYPA) and lung cancer. PMID: 21119205
Data indicate that changes of the glycophorin A dimerization propensities in different lipid bilayers suggest that the lipid bilayer thickness severely influences the monomer-dimer equilibrium of the transmembrane domain. PMID: 20603102
ABH blood group antigens in N-glycan of human glycophorin A. PMID: 20434428
The Sta gene found in this family has A246 & C252, C302, and G307. The putative crossing-over point is between nucleotides 252 to 302 in Intron 3. PMID: 20233359
Energy transfer between differently labelled glycophorin A transmembrane helices decreased with increasing Sodium Dodecyl Sulfate mole fractions albeit without modifying the helicity of the peptides. PMID: 20074546
Heterozygous missense mutation E758K in the human AE1/SLC4A1/band 3 gene in two unrelated patients with well-compensated hereditary spherostomatocytic anemia induces glycophorin A-independent, endogenous cation transport. PMID: 19907019
Natural selection of polymorphisms/variants on the erythrocyte surface PMID: 11861881
Somatic cell mutations found at the gene locus in erythrocytes of radiation workers at a nuclear facility PMID: 12492375
Distinct regions of human glycophorin A enhance human red cell anion exchanger transport function and surface trafficking PMID: 12813056
band 3 in the red cell can take up two different structures: one with high anion transport activity when glycophorin A is present and one with lower anion transport activity when glycophorin A is absent PMID: 14604989
Porcine Kupffer cells bind xenogeneic human RBC by recognition of a carbohydrate epitope on glycophorin A. PMID: 16003235
This study demonstrates the systematic classification of ten alleles (five M and five N alleles) of the MN blood group system to major or minor variations of the standard alleles. PMID: 16205834
glycophorin A somatic mutation frequency levels in newborns are not related to maternal lifestyle factors or drug metabolizing enzyme genotypes PMID: 16424825
GYPA & GYPB genotypes carrying MNSs antigens were analyzed in Thai patients with cerebral malaria & mild malaria; no statistical difference was found; it is concluded that MNSs antigens do not reveal the difference in susceptibility to cerebral malaria PMID: 17372674
single mutations in glycophorin A can result in the observed fourth power relationship with age of oncet in polycythemia rubra vera PMID: 17452518
GPA depletion does not alter band 3's native conformation at the DIDS binding site. It modulates a conformational equilibrium between 2 states of the binary complex formed by the competitive inhibitor DIDS, reversibly bound to properly folded band 3. PMID: 19071041
AE1 and GPA form a complex in the endoplasmic reticulum of human K562 cells. PMID: 19438409

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Subcellular Location

Cell membrane; Single-pass type I membrane protein. Note=Appears to be colocalized with SLC4A1.

Protein Families

Glycophorin A family

Database Links

HGNC: 4702

OMIM: 111300

KEGG: hsa:2993

STRING: 9606.ENSP00000354003

UniGene: Hs.434973

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Code	CSB-RA257220A0HU
Size	US$210
	Order now
Image	Overlay Peak curve showing K562 cells surface stained with CSB-RA257220A0HU (red line) at 1:50. Then 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (1µg/110⁶cells) for 45min at 4℃. The secondary antibody used was FITC-conjugated Goat Anti-rabbit IgG(H+L) at 1:200 dilution for 35min at 4℃.Control antibody (green line) was rabbit IgG (1µg/110⁶cells) used under the same conditions. Acquisition of >10,000 events was performed.
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GYPA Recombinant Monoclonal Antibody

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Target Background