Rabbit Polyclonal Phospho-Fusin (S339) antibody (STJ91077)


Reactivity: Human, Mouse, Rat, Monkey
Applications: WB, IHC, IF, ELISA
Conjugation: Unconjugated
Supplier: St John’s Laboratory Ltd.

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Rabbit Polyclonal Phospho-Fusin (S339) antibody (STJ91077)

Supplier: St John’s Laboratory Ltd.

Recommended applications: WB, IHC, IF, ELISA

Recommended dilution: WB 1:500-1:2000; IHC 1:100-1:300; IF 1:200-1:1000; ELISA 1:20000;

Recommended protocols: check protocols

Image descriptions:

Click or hover above images to see image description for Fusin (phospho Ser339) Polyclonal Antibody.

Alternative names:

Check alternative names for the antibody


CXCR4 antibody,|C-X-C chemokine receptor type 4 antibody|CD184 antibody|CD184 antigen antibody|Chemokine (C X C motif) receptor 4 antibody|Chemokine CXC Motif Receptor 4 antibody|CXC-R4 antibody|CXCR-4 antibody|CXCR4 antibody|CXCR4_HUMAN antibody|D2S201E antibody|FB22 antibody|Fusin antibody|HM89 antibody|HSY3RR antibody|LAP 3 antibody|LAP3 antibody|LCR1 antibody|LESTR antibody|Leukocyte derived seven transmembrane domain receptor antibody|Leukocyte-derived seven transmembrane domain receptor antibody|Lipopolysaccharide associated protein 3 antibody|Neuropeptide Y receptor Y3 antibody|NPY3R antibody|NPYR antibody|NPYRL antibody|NPYY3 antibody|NPYY3R antibody|Probable G protein coupled receptor lcr1 homolog antibody|SDF 1 receptor antibody|SDF-1 receptor antibody|SEVEN-TRANSMEMBRANE-SEGMENT RECEPTOR antibody|Stromal cell derived factor 1 receptor antibody|Stromal cell-derived factor 1 receptor antibody|WHIM antibody|WHIMS antibody|Anti-CXCR4 antibody [UMB2] (ab124824)
SCBT cat No: sc-12764|sc-53534|sc-6191|sc-6190|sc-6279|sc-9046|



Fusin (phospho Ser339) Polyclonal Antibody

Catalogue No.



Human, Mouse, Rat, Monkey


Phospho-Fusin (S339) Polyclonal Antibody detects endogenous levels of Fusin protein only when phosphorylated at S339.


Synthesized phospho-peptide derived from Fusin (phospho Ser339) at AA range 280-360





Recommended dilution

WB 1:500-1:2000; IHC 1:100-1:300; IF 1:200-1:1000; ELISA 1:20000;







Molecular weight

39 kDa


Fusin (phospho Ser339) Antibody was tube-contained. Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.


1 mg/ml


Fusin (phospho Ser339) Antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.


-20 Celsius degree. Avoid repeated freeze/thaw cycles.

Alternative antibody names

C-X-C chemokine receptor type 4 antibody, CXC-R4 antibody, CXCR-4 antibody, FB22 antibody, Fusin antibody, HM89 antibody, LCR1 antibody, Leukocyte-derived seven transmembrane domain receptor antibody, LESTR antibody, Lipopolysaccharide-associated protein 3 antibody, LAP-3 antibody, LPS-associated protein 3 antibody, NPYRL antibody, Stromal cell-derived factor 1 receptor antibody, SDF-1 receptor antibody, CD antigen CD184 antibody

Database links

Human UniProt/Swiss-Prot:P61073;Mouse UniPort/Swiss-Prot: P70658;Rat UniProt/Swiss-Port: Q8VD47;Human Entrez Gene: 7852;Mouse Entrez Gene: 12767;Rat Entrez Gene: Rn.44431

Protein names

C-X-C chemokine receptor type 4 , CXC-R4 , CXCR-4 , FB22 , Fusin , HM89 , LCR1 , Leukocyte-derived seven transmembrane domain receptor , LESTR , Lipopolysaccharide-associated protein 3 , LAP-3 , LPS-associated protein 3 , NPYRL , Stromal cell-derived factor 1 receptor , SDF-1 receptor , CD antigen CD184

Protein function

Receptor for the C-X-C chemokine CXCL12/SDF-1 that transduces a signal by increasing intracellular calcium ion levels and enhancing MAPK1/MAPK3 activation. Acts as a receptor for extracellular ubiquitin; leading to enhanced intracellular calcium ions and reduced cellular cAMP levels. Involved in hematopoiesis and in cardiac ventricular septum formation. Also plays an essential role in vascularization of the gastrointestinal tract, probably by regulating vascular branching and/or remodeling processes in endothelial cells. Involved in cerebellar development. In the CNS, could mediate hippocampal-neuron survival. / (Microbial infection) Acts as a coreceptor (CD4 being the primary receptor) for human immunodeficiency virus-1/HIV-1 X4 isolates and as a primary receptor for some HIV-2 isolates. Promotes Env-mediated fusion of the virus . Binds bacterial lipopolysaccharide (LPS) et mediates LPS-induced inflammatory response, including TNF secretion by monocytes .

Protein tissue specificity

Expressed in numerous tissues, such as peripheral blood leukocytes, spleen, thymus, spinal cord, heart, placenta, lung, liver, skeletal muscle, kidney, pancreas, cerebellum, cerebral cortex and medulla (in microglia as well as in astrocytes), brain microvascular, coronary artery and umbilical cord endothelial cells. Isoform 1 is predominant in all tissues tested.

Involvement in disease

WHIM syndrome (WHIMS) [MIM:193670]: Immunodeficiency disease characterized by neutropenia, hypogammaglobulinemia and extensive human papillomavirus (HPV) infection. Despite the peripheral neutropenia, bone marrow aspirates from affected individuals contain abundant mature myeloid cells, a condition termed myelokathexis. . Note: The disease is caused by mutations affecting the gene represented in this entry.

Protein sequence and domain

The amino-terminus is critical for ligand binding. Residues in all four extracellular regions contribute to HIV-1 coreceptor activity. / Belongs to the G-protein coupled receptor 1 family.

Protein post-translational modifications

Phosphorylated on agonist stimulation. Rapidly phosphorylated on serine and threonine residues in the C-terminal. Phosphorylation at Ser-324 and Ser-325 leads to recruitment of ITCH, ubiquitination and protein degradation. / Ubiquitinated by ITCH at the cell membrane on agonist stimulation. The ubiquitin-dependent mechanism, endosomal sorting complex required for transport (ESCRT), then targets CXCR4 for lysosomal degradation. This process is dependent also on prior Ser-/Thr-phosphorylation in the C-terminal of CXCR4. Also binding of ARRB1 to STAM negatively regulates CXCR4 sorting to lysosomes though modulating ubiquitination of SFR5S. / Sulfation on Tyr-21 is required for efficient binding of CXCL12/SDF-1alpha and promotes its dimerization. Tyr-7 and Tyr-12 are sulfated in a sequential manner after Tyr-21 is almost fully sulfated, with the binding affinity for CXCL12/SDF-1alpha increasing with the number of sulfotyrosines present. Sulfotyrosines Tyr-7 and Tyr-12 occupy clefts on opposing CXCL12 subunits, thus bridging the CXCL12 dimer interface and promoting CXCL12 dimerization. / O- and N-glycosylated. Asn-11 is the principal site of N-glycosylation. There appears to be very little or no glycosylation on Asn-176. N-glycosylation masks coreceptor function in both X4 and R5 laboratory-adapted and primary HIV-1 strains through inhibiting interaction with their Env glycoproteins. The O-glycosylation chondroitin sulfate attachment does not affect interaction with CXCL12/SDF-1alpha nor its coreceptor activity.

Protein cellular localization

Cell membrane; Multi-pass membrane protein / Cell junction / Early endosome / Late endosome / Lysosome


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St John’s Laboratory Ltd.

Product type

Primary antibody


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