Mouse Monoclonal FAK antibody [4A9D6] (STJ98060)


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

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Mouse Monoclonal FAK antibody [4A9D6] (STJ98060)

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:

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Alternative names:

Check alternative names for the antibody


PTK2 antibody, FAK antibody, FAK1 antibody,|FADK 1 antibody|FAK1 antibody|FRNK antibody|p125FAK antibody|pp125FAK antibody|PPP1R71 antibody|Protein phosphatase 1 regulatory subunit 71 antibody|Protein tyrosine kinase 2 antibody|Protein-tyrosine kinase 2 antibody|Ptk2 antibody|PTK2 protein tyrosine kinase 2 antibody|Anti-FAK antibody [EP695Y] (ab40794)
SCBT cat No: sc-557|sc-271195|sc-558|sc-932|sc-271126|sc-1688|sc-240361|sc-515287|sc-515361|sc-136676|sc-377483|sc-390442|sc-376464|sc-374558|sc-393049|sc-390894|sc-82143|sc-242669|



FAK Monoclonal Antibody

Catalogue No.





FAK Monoclonal Antibody detects endogenous levels of FAK protein.


Purified recombinant fragment of FAK expressed in E Coli





Recommended dilution

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






FAK Antibody was tube-contained. Ascitic fluid containing 0.03% sodium azide.


1 mg/ml


FAK Antibody was purified using affinity purification.


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

Alternative antibody names

Focal adhesion kinase 1 antibody, FADK 1 antibody, Focal adhesion kinase-related nonkinase antibody, FRNK antibody, Protein phosphatase 1 regulatory subunit 71 antibody, PPP1R71 antibody, Protein-tyrosine kinase 2 antibody, p125FAK antibody, pp125FAK antibody

Database links

Human UniProt/Swiss-Prot:Q05397;Mouse UniPort/Swiss-Prot: P34152;Rat UniProt/Swiss-Port: O35346;Human Entrez Gene: 5747;Mouse Entrez Gene: 14083;Rat Entrez Gene: Rn.2809

Protein names

Focal adhesion kinase 1 , FADK 1 , Focal adhesion kinase-related nonkinase , FRNK , Protein phosphatase 1 regulatory subunit 71 , PPP1R71 , Protein-tyrosine kinase 2 , p125FAK , pp125FAK

Protein function

Non-receptor protein-tyrosine kinase that plays an essential role in regulating cell migration, adhesion, spreading, reorganization of the actin cytoskeleton, formation and disassembly of focal adhesions and cell protrusions, cell cycle progression, cell proliferation and apoptosis. Required for early embryonic development and placenta development. Required for embryonic angiogenesis, normal cardiomyocyte migration and proliferation, and normal heart development. Regulates axon growth and neuronal cell migration, axon branching and synapse formation; required for normal development of the nervous system. Plays a role in osteogenesis and differentiation of osteoblasts. Functions in integrin signal transduction, but also in signaling downstream of numerous growth factor receptors, G-protein coupled receptors (GPCR), EPHA2, netrin receptors and LDL receptors. Forms multisubunit signaling complexes with SRC and SRC family members upon activation; this leads to the phosphorylation of additional tyrosine residues, creating binding sites for scaffold proteins, effectors and substrates. Regulates numerous signaling pathways. Promotes activation of phosphatidylinositol 3-kinase and the AKT1 signaling cascade. Promotes activation of MAPK1/ERK2, MAPK3/ERK1 and the MAP kinase signaling cascade. Promotes localized and transient activation of guanine nucleotide exchange factors (GEFs) and GTPase-activating proteins (GAPs), and thereby modulates the activity of Rho family GTPases. Signaling via CAS family members mediates activation of RAC1. Recruits the ubiquitin ligase MDM2 to P53/TP53 in the nucleus, and thereby regulates P53/TP53 activity, P53/TP53 ubiquitination and proteasomal degradation. Phosphorylates SRC; this increases SRC kinase activity. Phosphorylates ACTN1, ARHGEF7, GRB7, RET and WASL. Promotes phosphorylation of PXN and STAT1; most likely PXN and STAT1 are phosphorylated by a SRC family kinase that is recruited to autophosphorylated PTK2/FAK1, rather than by PTK2/FAK1 itself. Promotes phosphorylation of BCAR1; GIT2 and SHC1; this requires both SRC and PTK2/FAK1. Promotes phosphorylation of BMX and PIK3R1. Isoform 6 (FRNK) does not contain a kinase domain and inhibits PTK2/FAK1 phosphorylation and signaling. Its enhanced expression can attenuate the nuclear accumulation of LPXN and limit its ability to enhance serum response factor (SRF)-dependent gene transcription. / ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate. / Subject to autoinhibition, mediated by interactions between the FERM domain and the kinase domain. Activated by autophosphorylation at Tyr-397. This promotes interaction with SRC and phosphorylation at Tyr-576 and Tyr-577 in the kinase activation loop. Phosphorylation at Tyr-576 and Tyr-577 is required for maximal kinase activity. Inhibited by TAC544, TAE226, PF-573,228 and PF-562,271.

Protein tissue specificity

Detected in B and T-lymphocytes. Isoform 1 and isoform 6 are detected in lung fibroblasts (at protein level). Ubiquitous.

Involvement in disease

Note: Aberrant PTK2/FAK1 expression may play a role in cancer cell proliferation, migration and invasion, in tumor formation and metastasis. PTK2/FAK1 overexpression is seen in many types of cancer.

Protein sequence and domain

The Pro-rich regions interact with the SH3 domain of CAS family members, such as BCAR1 and NEDD9, and with the GTPase activating protein ARHGAP26. / The carboxy-terminal region is the site of focal adhesion targeting (FAT) sequence which mediates the localization of FAK1 to focal adhesions. / Belongs to the protein kinase superfamily. Tyr protein kinase family. FAK subfamily. / Contains 1 FERM domain. / Contains 1 protein kinase domain.

Protein post-translational modifications

Phosphorylated on tyrosine residues upon activation, e.g. upon integrin signaling. Tyr-397 is the major autophosphorylation site, but other kinases can also phosphorylate this residue. Phosphorylation at Tyr-397 promotes interaction with SRC and SRC family members, leading to phosphorylation at Tyr-576, Tyr-577 and at additional tyrosine residues. FGR promotes phosphorylation at Tyr-397 and Tyr-576. FER promotes phosphorylation at Tyr-577, Tyr-861 and Tyr-925, even when cells are not adherent. Tyr-397, Tyr-576 and Ser-722 are phosphorylated only when cells are adherent. Phosphorylation at Tyr-397 is important for interaction with BMX, PIK3R1 and SHC1. Phosphorylation at Tyr-925 is important for interaction with GRB2. Dephosphorylated by PTPN11; PTPN11 is recruited to PTK2 via EPHA2 (tyrosine phosphorylated). Microtubule-induced dephosphorylation at Tyr-397 is crucial for the induction of focal adhesion disassembly; this dephosphorylation could be catalyzed by PTPN11 and regulated by ZFYVE21. / Sumoylated; this enhances autophosphorylation.

Protein cellular localization

Cell junction > focal adhesion / Cell membrane; Peripheral membrane protein; Cytoplasmic side / Cytoplasm > cell cortex / Cytoplasm > cytoskeleton / Cytoplasm > cytoskeleton > microtubule organizing center > centrosome / Nucleus

Research area

All research areas>Kinases and Phosphatases>FAK
(View all antibody categories related to Kinases and Phosphatases)


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St John’s Laboratory Ltd.

Product type

Primary antibody


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