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MST-1/Krs-2 Blocking Peptide
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- BACKGROUND
| Primary Accession | Q13043 |
|---|---|
| Other Accession | AAB17262 |
| Gene ID | 6789 |
| Calculated MW | 55630 Da |
| Gene ID | 6789 |
|---|---|
| Application & Usage | The peptide is used for blocking the antibody activity of active MST-1/Krs-2. It usually blocks the antibody activity completely in Western blot analysis by incubating the peptide with equal volume of antibody for 30 minutes at 37°C |
| Other Names | Serine/threonine-protein kinase 4, 2.7.11.1, Mammalian STE20-like protein kinase 1, MST-1, STE20-like kinase MST1, Serine/threonine-protein kinase Krs-2, Serine/threonine-protein kinase 4 37kDa subunit, MST1/N, Serine/threonine-protein kinase 4 18kDa subunit, MST1/C, STK4, KRS2, MST1 |
| Target/Specificity | MST-1/Krs-2 |
| Formulation | 50 µg (0.2 mg/ml) in phosphate buffered saline (PBS), pH 7.2, containing 0.1% BSA and 0.02% thimerosal. |
| Reconstitution & Storage | -20 °C |
| Background Descriptions | |
| Precautions | MST-1/Krs-2 Blocking Peptide is for research use only and not for use in diagnostic or therapeutic procedures. |
| Name | STK4 |
|---|---|
| Synonyms | KRS2, MST1 |
| Function | Stress-activated, pro-apoptotic kinase which, following caspase-cleavage, enters the nucleus and induces chromatin condensation followed by internucleosomal DNA fragmentation. Key component of the Hippo signaling pathway which plays a pivotal role in organ size control and tumor suppression by restricting proliferation and promoting apoptosis. The core of this pathway is composed of a kinase cascade wherein STK3/MST2 and STK4/MST1, in complex with its regulatory protein SAV1, phosphorylates and activates LATS1/2 in complex with its regulatory protein MOB1, which in turn phosphorylates and inactivates YAP1 oncoprotein and WWTR1/TAZ. Phosphorylation of YAP1 by LATS2 inhibits its translocation into the nucleus to regulate cellular genes important for cell proliferation, cell death, and cell migration. STK3/MST2 and STK4/MST1 are required to repress proliferation of mature hepatocytes, to prevent activation of facultative adult liver stem cells (oval cells), and to inhibit tumor formation (By similarity). Phosphorylates 'Ser-14' of histone H2B (H2BS14ph) during apoptosis. Phosphorylates FOXO3 upon oxidative stress, which results in its nuclear translocation and cell death initiation. Phosphorylates MOBKL1A, MOBKL1B and RASSF2. Phosphorylates TNNI3 (cardiac Tn-I) and alters its binding affinity to TNNC1 (cardiac Tn-C) and TNNT2 (cardiac Tn-T). Phosphorylates FOXO1 on 'Ser-212' and regulates its activation and stimulates transcription of PMAIP1 in a FOXO1-dependent manner. Phosphorylates SIRT1 and inhibits SIRT1-mediated p53/TP53 deacetylation, thereby promoting p53/TP53 dependent transcription and apoptosis upon DNA damage. Acts as an inhibitor of PKB/AKT1. Phosphorylates AR on 'Ser-650' and suppresses its activity by intersecting with PKB/AKT1 signaling and antagonizing formation of AR- chromatin complexes. |
| Cellular Location | Cytoplasm. Nucleus. Note=The caspase-cleaved form cycles between the nucleus and cytoplasm |
| Tissue Location | Expressed in prostate cancer and levels increase from the normal to the malignant state (at protein level). Ubiquitously expressed. |
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