negative regulation of metabolic process / negative regulation of locomotor rhythm / negative regulation of eating behavior / Synthesis, secretion, and deacylation of Ghrelin / regulation of lipoprotein lipid oxidation / cellular response to L-ascorbic acid / positive regulation of fat cell apoptotic process / negative regulation of glutamine transport / leptin receptor activity / negative regulation of appetite by leptin-mediated signaling pathway ...negative regulation of metabolic process / negative regulation of locomotor rhythm / negative regulation of eating behavior / Synthesis, secretion, and deacylation of Ghrelin / regulation of lipoprotein lipid oxidation / cellular response to L-ascorbic acid / positive regulation of fat cell apoptotic process / negative regulation of glutamine transport / leptin receptor activity / negative regulation of appetite by leptin-mediated signaling pathway / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / negative regulation of glucagon secretion / regulation of endothelial cell proliferation / regulation of natural killer cell proliferation / leptin receptor binding / regulation of natural killer cell mediated cytotoxicity / protein-hormone receptor activity / bone growth / positive regulation of luteinizing hormone secretion / regulation of natural killer cell activation / glycerol biosynthetic process / positive regulation of monoatomic ion transport / elastin metabolic process / leptin-mediated signaling pathway / positive regulation of follicle-stimulating hormone secretion / regulation of steroid biosynthetic process / regulation of intestinal cholesterol absorption / regulation of bone remodeling / regulation of brown fat cell differentiation / positive regulation of peroxisome proliferator activated receptor signaling pathway / positive regulation of hepatic stellate cell activation / adult feeding behavior / regulation of nitric-oxide synthase activity / response to leptin / regulation of lipid biosynthetic process / bone mineralization involved in bone maturation / regulation of feeding behavior / sexual reproduction / activation of protein kinase C activity / fatty acid catabolic process / negative regulation of cartilage development / ovulation from ovarian follicle / negative regulation of appetite / positive regulation of developmental growth / leukocyte tethering or rolling / cellular response to leptin stimulus / energy reserve metabolic process / bile acid metabolic process / negative regulation of D-glucose import / tyrosine phosphorylation of STAT protein / prostaglandin secretion / regulation of protein localization to nucleus / cardiac muscle hypertrophy / regulation of metabolic process / hormone metabolic process / aorta development / intestinal absorption / cytokine receptor activity / insulin secretion / regulation of fat cell differentiation / positive regulation of p38MAPK cascade / negative regulation of vasoconstriction / eating behavior / peptide hormone receptor binding / regulation of gluconeogenesis / glycogen metabolic process / fatty acid beta-oxidation / regulation of cytokine production involved in inflammatory response / cytokine binding / central nervous system neuron development / positive regulation of insulin secretion involved in cellular response to glucose stimulus / peptide hormone binding / response to dietary excess / negative regulation of lipid storage / T cell differentiation / positive regulation of TOR signaling / response to vitamin E / glial cell proliferation / negative regulation of gluconeogenesis / regulation of angiogenesis / adipose tissue development / phagocytosis / positive regulation of insulin receptor signaling pathway / positive regulation of T cell proliferation / cellular response to retinoic acid / positive regulation of tyrosine phosphorylation of STAT protein / energy homeostasis / positive regulation of interleukin-12 production / cholesterol metabolic process / regulation of insulin secretion / negative regulation of autophagy / determination of adult lifespan / gluconeogenesis / response to activity / positive regulation of interleukin-8 production / female pregnancy / positive regulation of receptor signaling pathway via JAK-STAT / response to insulin / regulation of protein phosphorylation / placenta development 類似検索 - 分子機能
Leptin / Leptin / Leptin receptor, immunoglobulin-like domain / Obesity receptor immunoglobulin like domain / Short hematopoietin receptor, family 1, conserved site / Immunoglobulin C2-set-like, ligand-binding / Ig-like C2-type domain / Long hematopoietin receptor, Gp130 family 2, conserved site / Long hematopoietin receptor, gp130 family signature. / : ...Leptin / Leptin / Leptin receptor, immunoglobulin-like domain / Obesity receptor immunoglobulin like domain / Short hematopoietin receptor, family 1, conserved site / Immunoglobulin C2-set-like, ligand-binding / Ig-like C2-type domain / Long hematopoietin receptor, Gp130 family 2, conserved site / Long hematopoietin receptor, gp130 family signature. / : / Four-helical cytokine-like, core / Fibronectin type III domain / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like fold 類似検索 - ドメイン・相同性
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
米国
引用
ジャーナル: Nat Commun / 年: 2023 タイトル: Structural insights into the mechanism of leptin receptor activation. 著者: Robert A Saxton / Nathanael A Caveney / Maria Dolores Moya-Garzon / Karsten D Householder / Grayson E Rodriguez / Kylie A Burdsall / Jonathan Z Long / K Christopher Garcia / 要旨: Leptin is an adipocyte-derived protein hormone that promotes satiety and energy homeostasis by activating the leptin receptor (LepR)-STAT3 signaling axis in a subset of hypothalamic neurons. Leptin ...Leptin is an adipocyte-derived protein hormone that promotes satiety and energy homeostasis by activating the leptin receptor (LepR)-STAT3 signaling axis in a subset of hypothalamic neurons. Leptin signaling is dysregulated in obesity, however, where appetite remains elevated despite high levels of circulating leptin. To gain insight into the mechanism of leptin receptor activation, here we determine the structure of a stabilized leptin-bound LepR signaling complex using single particle cryo-EM. The structure reveals an asymmetric architecture in which a single leptin induces LepR dimerization via two distinct receptor-binding sites. Analysis of the leptin-LepR binding interfaces reveals the molecular basis for human obesity-associated mutations. Structure-based design of leptin variants that destabilize the asymmetric LepR dimer yield both partial and biased agonists that partially suppress STAT3 activation in the presence of wild-type leptin and decouple activation of STAT3 from LepR negative regulators. Together, these results reveal the structural basis for LepR activation and provide insights into the differential plasticity of signaling pathways downstream of LepR.