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STK11

Chr 19p13.3

serine/threonine kinase 11

Aliases:
PJS, LKB1
MANE:
ENST00000326873.12

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Adult solid tumours cancer susceptibility

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Adult solid tumours for rare disease

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Childhood solid tumours

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Childhood solid tumours cancer susceptibility

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Colorectal cancer pertinent cancer susceptibility

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Familial breast cancer

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • GI tract tumours

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Inherited pancreatic cancer

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown

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Disease associations (Open Targets)

  • Peutz-Jeghers syndrome

    0.85
  • familial pancreatic carcinoma

    0.72
  • lung adenocarcinoma

    0.68
  • melanoma, cutaneous malignant, susceptibility to, 1

    0.65
  • testicular germ cell tumor

    0.64
  • Inherited cancer-predisposing syndrome

    0.58
  • hereditary neoplastic syndrome

    0.58
  • non-small cell lung carcinoma

    0.57
  • familial ovarian cancer

    0.49
  • cervical squamous cell carcinoma

    0.46

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Serine/threonine-protein kinase STK11

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 (PubMed:12805220, PubMed:14517248, PubMed:14976552, PubMed:15016379, PubMed:15733851). 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 (PubMed:12805220, PubMed:14517248, PubMed:14976552, PubMed:15016379, PubMed:15733851). Also phosphorylates non-AMPK family proteins such as STRADA, PTEN and possibly p53/TP53 (PubMed:11430832, PubMed:15987703). 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 (PubMed:14976552). Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton (PubMed:15016379). Required for cortical neuron polarization by mediating phosphorylation and activation of BRSK1 and BRSK2, leading to axon initiation and specification (PubMed:14976552). Involved in DNA damage response: interacts with p53/TP53 and recruited to the CDKN1A/WAF1 promoter to participate in transcription activation (PubMed:11430832, PubMed:17108107, PubMed:21317932). 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 (PubMed:11430832, PubMed:17108107, PubMed:21317932). 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 (PubMed:11430832, PubMed:17108107, PubMed:21317932). Regulates UV radiation-induced DNA damage response mediated by CDKN1A (PubMed:25329316). 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)

Curated MONDO disease pages that list STK11 among their top associated genes.

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.