Rabbit Polyclonal Phospho-FGFR-4 (Y642) antibody (STJ90669)


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

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Rabbit Polyclonal Phospho-FGFR-4 (Y642) antibody (STJ90669)

Supplier: St John’s Laboratory Ltd.

Recommended applications: WB, ELISA

Recommended dilution: WB 1:500-1:2000; ELISA 1:10000;

Recommended protocols: check protocols

Image descriptions:

Click or hover above images to see image description for FGFR-4 (phospho Tyr642) Polyclonal Antibody.

Alternative names:

Check alternative names for the antibody


FGFR4 antibody, JTK2 antibody, TKF antibody,|CD 334 antibody|Tyrosylprotein kinase antibody|Anti-FGFR4 antibody [5B5] (ab44971)
SCBT cat No: sc-136988|sc-124|sc-31284|sc-9006|



FGFR-4 (phospho Tyr642) Polyclonal Antibody

Catalogue No.



Human, Mouse, Rat


Phospho-FGFR-4 (Y642) Polyclonal Antibody detects endogenous levels of FGFR-4 protein only when phosphorylated at Y642.


Synthesized phospho-peptide derived from FGFR-4 (phospho Tyr642) at AA range 580-660





Recommended dilution

WB 1:500-1:2000; ELISA 1:10000;







Molecular weight

90 kDa


FGFR-4 (phospho Tyr642) Antibody was tube-contained. Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.


1 mg/ml


FGFR-4 (phospho Tyr642) 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

Fibroblast growth factor receptor 4 antibody, FGFR-4 antibody, CD antigen CD334 antibody

Database links

Human UniProt/Swiss-Prot:P22455;Mouse UniPort/Swiss-Prot: Q03142;Rat UniProt/Swiss-Port: Q498D6;Human Entrez Gene: 2264;Mouse Entrez Gene: 14186;Rat Entrez Gene: Rn.24104

Protein names

Fibroblast growth factor receptor 4 , FGFR-4 , CD antigen CD334

Protein function

Tyrosine-protein kinase that acts as cell-surface receptor for fibroblast growth factors and plays a role in the regulation of cell proliferation, differentiation and migration, and in regulation of lipid metabolism, bile acid biosynthesis, glucose uptake, vitamin D metabolism and phosphate homeostasis. Required for normal down-regulation of the expression of CYP7A1, the rate-limiting enzyme in bile acid synthesis, in response to FGF19. Phosphorylates PLCG1 and FRS2. Ligand binding leads to the activation of several signaling cascades. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. Phosphorylation of FRS2 triggers recruitment of GRB2, GAB1, PIK3R1 and SOS1, and mediates activation of RAS, MAPK1/ERK2, MAPK3/ERK1 and the MAP kinase signaling pathway, as well as of the AKT1 signaling pathway. Promotes SRC-dependent phosphorylation of the matrix protease MMP14 and its lysosomal degradation. FGFR4 signaling is down-regulated by receptor internalization and degradation; MMP14 promotes internalization and degradation of FGFR4. Mutations that lead to constitutive kinase activation or impair normal FGFR4 inactivation lead to aberrant signaling. / ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate. / Present in an inactive conformation in the absence of bound ligand. Ligand binding leads to dimerization and activation by autophosphorylation on tyrosine residues.

Protein tissue specificity

Expressed in gastrointestinal epithelial cells, pancreas, and gastric and pancreatic cancer cell lines.

Involvement in disease

Prostate cancer (PC) [MIM:176807]: A malignancy originating in tissues of the prostate. Most prostate cancers are adenocarcinomas that develop in the acini of the prostatic ducts. Other rare histopathologic types of prostate cancer that occur in approximately 5% of patients include small cell carcinoma, mucinous carcinoma, prostatic ductal carcinoma, transitional cell carcinoma, squamous cell carcinoma, basal cell carcinoma, adenoid cystic carcinoma (basaloid), signet-ring cell carcinoma and neuroendocrine carcinoma. . Note: The gene represented in this entry is involved in disease pathogenesis. FGFR4 variant Arg-388 has been associated with prostate cancer as well as cancers of the breast, colon, head and neck, larynx, lung, skin. Arg-388 predisposes cancer patients for accelerated disease progression and is associated with poor prognosis. .

Protein sequence and domain

Belongs to the protein kinase superfamily. Tyr protein kinase family. Fibroblast growth factor receptor subfamily. / Contains 3 Ig-like C2-type (immunoglobulin-like) domains. / Contains 1 protein kinase domain.

Protein post-translational modifications

N-glycosylated. Full maturation of the glycan chains in the Golgi is essential for high affinity interaction with FGF19. / Ubiquitinated. Subject to proteasomal degradation when not fully glycosylated. / Autophosphorylated. Binding of FGF family members together with heparan sulfate proteoglycan or heparin promotes receptor dimerization and autophosphorylation on tyrosine residues. Autophosphorylation occurs in trans between the two FGFR molecules present in the dimer.

Protein cellular localization

Cell membrane; Single-pass type I membrane protein / Endosome / Endoplasmic reticulum / Secreted / Cytoplasm

Research area

All research areas>Membrane Receptors>FGFR
(View all antibody categories related to Membrane Receptors)


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St John’s Laboratory Ltd.

Product type

Primary antibody


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