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MST1 Monoclonal antibody

MST1 Monoclonal Antibody for WB, IF, IHC, ELISA

Host / Isotype

Mouse / IgG2a


Human, Mouse , Rat and More (2)







Cat no : 66663-1-Ig


DKFZp686A2068, KRS2, MST 1, MST1, serine/threonine kinase 4, STE20 like kinase MST1, STK4, YSK3

Tested Applications

Positive WB detected inHeLa cells, HepG2 cells, HEK-293 cells, Jurkat cells, HSC-T6 cells, RAW 264.7 cells
Positive IHC detected inhuman prostate cancer tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inPC-3 cells

Recommended dilution

Western Blot (WB)WB : 1:2000-1:10000
Immunohistochemistry (IHC)IHC : 1:250-1:1000
Immunofluorescence (IF)IF : 1:200-1:800
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

66663-1-Ig targets MST1 in WB, IF, IHC, ELISA applications and shows reactivity with Human, Mouse , Rat samples.

Tested Reactivity Human, Mouse , Rat
Cited Reactivityhuman, mouse
Host / Isotype Mouse / IgG2a
Class Monoclonal
Type Antibody
Immunogen MST1 fusion protein Ag17738
Full Name serine/threonine kinase 4
Calculated Molecular Weight 487 aa, 56 kDa
Observed Molecular Weight 52-56 kDa
GenBank Accession NumberBC093768
Gene Symbol MST1/MST2
Gene ID (NCBI) 6789
Conjugate Unconjugated
Form Liquid
Purification MethodProtein A purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

Mammalian STE20-like serine-threonine kinase MST1, encoded by the STK4 gene, is a multifunctional protein. MST1 and its closest paralogs MST2 (encoded by the STK3 gene), MST3, and MST4 are members of the Class II Germinal Center Family of Protein Kinases . STK3/4 and LATS1/2 (large tumor suppressor 1 and 2) are core kinase components of the Hippo tumor suppressor pathway in mammalians . In the conventional Hippo pathway, the STK3/4 and LATS1/2 signaling cascade phosphorylates and inactivates the transcriptional coactivator YAP1 (yes associated protein 1) and its close paralog WWTR1]. YAP1 and WWTR1 do not have DNA binding domains and they exert their biological outputs, such as cell proliferation and survival, by interacting with the TEAD1-4 transcription factors. Lines of evidence have indicated that dysregulation or loss of STK4/Hippo signaling is linked to developmental disorders and carcinogenesis with poor prognosis. STK4 is a stress-induced kinase and it can be activated in response to cell-death inducers. Autophosphorylation of STK4 at Thr183 (Thr180 in STK3) in the activation loop is a key activation mechanism for STK4/3 because phosphorylation of Thr183/180 causes the cleavage of STK4 by caspases under apoptotic conditions. The caspase-cleavage results in a more active STK4 protein (STK4-N, an amino-terminally truncated STK4), which localizes into the nucleus and induces apoptosis through histone modifications and chromatin condensations.


Product Specific Protocols
WB protocol for MST1 antibody 66663-1-IgDownload protocol
IHC protocol for MST1 antibody 66663-1-IgDownload protocol
IF protocol for MST1 antibody 66663-1-IgDownload protocol
Standard Protocols
Click here to view our Standard Protocols




FERM domain-containing protein 6 exerts a tumor-inhibiting role in thyroid cancer by antagonizing oncogenic YAP1

Authors - Wei Wang

J Biol Chem

Angiomotins stimulate LATS kinase autophosphorylation and act as scaffolds that promote Hippo signaling.

Authors - Sebastian Mana-Capelli

J Endocr Soc

Effect of Inactivation of Mst1 and Mst2 in the Mouse Adrenal Cortex

Authors - Nour Abou Nader