STK11 Antibody | anti-STK11 antibody

STK11 Antibody

Cat. Num. AAA8516316

• Gene Names: STK11; PJS; LKB1; hLKB1
• Reactivity: Human, Mouse, Rat
• Applications: Western Blot, Immunohistochemistry
• Purity: Immunogen affinity purified
• Synonyms: STK11; STK11 Antibody; LKB1; PJS; anti-STK11 antibody

• Reactivity: Human, Mouse, Rat
• Specificity: STK11 Antibody detects endogenous levels of total STK11
• Purity/Purification: Immunogen affinity purified
• Form/Format: In phosphate buffered saline, pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Sequence Length: 433

• Applicable Applications for anti-STK11 antibody: Western Blot (WB), Immunohistochemistry (IHC)
• Application Notes: WB: 1:500-1:2000; IHC: 1:50-1:200
• Immunogen: Recombinant protein of human STK11
• Preparation and Storage: Store at-20 degree C for 1 year

Western Blot (WB)

(Western blot analysis of extracts of HEK-293cell lines, using STK11 antibody.)

Related Product Information for anti-STK11 antibody

LKB1 (STK11) is a serine/threonine kinase and tumor suppressor that helps control cell structure, apoptosis and energy homeostasis through regulation of numerous downstream kinases (1, 2). A cytosolic protein complex comprised of LKB1, putative kinase STRAD, and the MO25 scaffold protein, activates both AMP-activated protein kinase (AMPK) and several AMPK-related kinases (3). AMPK plays a predominant role as the master regulator of cellular energy homeostasis, controlling downstream effectors that regulate cell growth and apoptosis in response to cellular ATP concentrations (4). LKB1 appears to be phosphorylated in cells at several sites, ?including human LKB1 at Ser31/325/428 and Thr189/336/363 (5).Mutation in the corresponding LKB1 gene causes Peutz-Jeghers syndrome (PJS), an autosomal dominant disorder characterized by benign GI tract polyps and dark skin lesions of the mouth, hands and feet (6). A variety of other LKB1 gene mutations have been associated with the formation of sporadic cancers in several tissues (7).

NCBI and Uniprot Product Information

• NCBI GI #: 4507271
• NCBI GeneID: 6794
• NCBI Accession #: NP_000446.1
• NCBI GenBank Nucleotide #: NM_000455.4
• UniProt Accession #: Q15831; B2RBX7; E7EW76
• Molecular Weight: 49kDa
• NCBI Official Full Name: serine/threonine-protein kinase STK11
• NCBI Official Synonym Full Names: serine/threonine kinase 11
• NCBI Official Symbol: STK11
• NCBI Official Synonym Symbols: PJS; LKB1; hLKB1
• NCBI Protein Information: serine/threonine-protein kinase STK11
• UniProt Protein Name: Serine/threonine-protein kinase STK11
• Protein Family: Serine/threonine-protein kinase
• UniProt Gene Name: STK11
• UniProt Synonym Gene Names: LKB1; PJS; LKB1; hLKB1

NCBI Description

This gene, which encodes a member of the serine/threonine kinase family, regulates cell polarity and functions as a tumor suppressor. Mutations in this gene have been associated with Peutz-Jeghers syndrome, an autosomal dominant disorder characterized by the growth of polyps in the gastrointestinal tract, pigmented macules on the skin and mouth, and other neoplasms. Alternate transcriptional splice variants of this gene have been observed but have not been thoroughly characterized. [provided by RefSeq, Jul 2008]

Uniprot Description

Tumor suppressor serine/threonine-protein kinase that controls the activity of AMP-activated protein kinase (AMPK) family members, thereby playing a role in various processes such as cell metabolism, cell polarity, apoptosis and DNA damage response. Acts by phosphorylating the T-loop of AMPK family proteins, thus promoting their activity: phosphorylates PRKAA1, PRKAA2, BRSK1, BRSK2, MARK1, MARK2, MARK3, MARK4, NUAK1, NUAK2, SIK1, SIK2, SIK3 and SNRK but not MELK. Also phosphorylates non-AMPK family proteins such as STRADA, PTEN and possibly p53/TP53. Acts as a key upstream regulator of AMPK by mediating phosphorylation and activation of AMPK catalytic subunits PRKAA1 and PRKAA2 and thereby regulates processes including: inhibition of signaling pathways that promote cell growth and proliferation when energy levels are low, glucose homeostasis in liver, activation of autophagy when cells undergo nutrient deprivation, and B-cell differentiation in the germinal center in response to DNA damage. Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton. Required for cortical neuron polarization by mediating phosphorylation and activation of BRSK1 and BRSK2, leading to axon initiation and specification. Involved in DNA damage response: interacts with p53/TP53 and recruited to the CDKN1A/WAF1 promoter to participate in transcription activation. Able to phosphorylate p53/TP53; the relevance of such result in vivo is however unclear and phosphorylation may be indirect and mediated by downstream STK11/LKB1 kinase NUAK1. Also acts as a mediator of p53/TP53-dependent apoptosis via interaction with p53/TP53: translocates to the mitochondrion during apoptosis and regulates p53/TP53-dependent apoptosis pathways. In vein endothelial cells, inhibits PI3K/Akt signaling activity and thus induces apoptosis in response to the oxidant peroxynitrite (in vitro). Regulates UV radiation-induced DNA damage response mediated by CDKN1A. In association with NUAK1, phosphorylates CDKN1A in response to UV radiation and contributes to its degradation which is necessary for optimal DNA repair (PubMed:25329316).