Rabbit Leptin Receptor Polyclonal Antibody | anti-LEPR antibody

Phospho-Leptin Receptor (Tyr1141) Antibody

Cat. Num. AAA9614225

• Gene Names: LEPR; OBR; OB-R; CD295; LEP-R; LEPRD
• Reactivity: Human, Mouse, Rat; Predicted Reactivity: Pig (92%), Rabbit (92%)
• Applications: Western Blot, Immunohistochemistry, ELISA
• Purity: The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
• Synonyms: Leptin Receptor; Polyclonal Antibody; Phospho-Leptin Receptor (Tyr1141) Antibody; CD 295; CD295; CD295 antigen; Db; Fa; HuB219; LEP R; LEP-R; LEPR; LEPR_HUMAN; LEPRD; Leptin receptor; Leptin receptor fatty; Leptin receptor gene related protein; Leptin receptor precursor; OB R gene related protein; OB receptor; OB-R; OB-RGRP; obl; Obr; anti-LEPR antibody

• Host: Rabbit
• Reactivity: Human, Mouse, Rat; Predicted Reactivity: Pig (92%), Rabbit (92%)
• Clonality: Polyclonal
• Isotype: Rabbit IgG
• Specificity: Phospho-Leptin Receptor (Tyr1141) Antibody detects endogenous levels of Leptin Receptor only when phosphorylated at Tyr1141.; Tissue Specificity: Isoform A is expressed in fetal liver and in hematopoietic tissues and choroid plexus. In adults highest expression in heart, liver, small intestine, prostate and ovary. Low level in lung and kidney. Isoform B is highly expressed in hypothalamus, but also in skeletal muscle. Detected in fundic and antral epithelial cells of the gastric mucosa. Isoform B and isoform A are expressed by NK cells (at protein level).
• Purity/Purification: The antibody is from purified rabbit serum by affinity purification via sequential chromatography on phospho-peptide and non-phospho-peptide affinity columns.
• Form/Format: Liquid. Rabbit IgG in phosphate buffered saline, pH7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1mg/ml (varies by lot)

• Applicable Applications for anti-LEPR antibody: Western Blot (WB), Immunohistochemistry (IHC), Peptide ELISA (EIA)
• Application Notes: WB: 1:1000-3000; IHC: 1:50-1:200; Peptide ELISA: 1:20,000-1:40,000
• Immunogen: A synthesized peptide derived from human Leptin Receptor around the phosphorylation site of Tyr1141.
• Conjugation: Unconjugated
• Fragment: Fab fragment
• Post Translational Modifications: On ligand binding, phosphorylated on two conserved C-terminal tyrosine residues (isoform B only) by JAK2. Tyr-986 is required for complete binding and activation of PTPN11, ERK/FOS activation,for interaction with SOCS3 and SOCS3 mediated inhibition of leptin signaling. Phosphorylation on Tyr-1141 is required for STAT3 binding/activation. Phosphorylation of Tyr-1079 has a more accessory role.
• Subunit Structure: Present as a mixture of monomers and dimers (Probable). The phosphorylated receptor binds a number of SH2 domain-containing proteins such as JAK2, STAT3, PTPN11, and SOCS3 (By similarity). Interaction with SOCS3 inhibits JAK/STAT signaling and MAPK cascade (By similarity).
• Similarity: The cytoplasmic domain may be essential for intracellular signal transduction by activation of JAK tyrosine kinase and STATs.The WSXWS motif appears to be necessary for proper protein folding and thereby efficient intracellular transport and cell-surface receptor binding.The box 1 motif is required for JAK interaction and/or activation.Belongs to the type I cytokine receptor family. Type 2 subfamily.
• Subcellular Location: Cell membrane>Single-pass type I membrane protein. Basolateral cell membrane. Secreted.
• Preparation and Storage: Store at -20 degree C. Stable for 12 months from date of receipt.

Western Blot (WB)

(Western blot analysis of Leptin Receptor (Phospho-Tyr1141) using PMA treated Jurkat whole cell lysates.-/+ means absence or presence of N peptide（non-phospho peptide) and P peptide(phospho peptide).)

Immunohistochemistry (IHC)

(Staining Rat testis tissue by IHC-P. The sample was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The sample was then blocked and incubated with the primary antibody at 4 degree C overnight. An HRP conjugated anti-Rabbit antibody was used as the secondary antibody.)

Immunohistochemistry (IHC)

(At 1/100 staining Human mammary cancer by IHC-P. The sample was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The sample was then blocked and incubated with the primary antibody at 4 degree C overnight. An HRP conjugated anti-Rabbit antibody was used as the secondary antibody.)

Immunohistochemistry (IHC)

(At 1/100 staining Human ovarian cancer by IHC-P. The sample was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The sample was then blocked and incubated with the primary antibody at 4 degree C overnight. An HRP conjugated anti-Rabbit antibody was used as the secondary antibody.)

Immunohistochemistry (IHC)

(At 1/100 staining Human mammary cancer by IHC-P. The sample was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The sample was then blocked and incubated with the primary antibody at 4 degree C overnight. An HRP conjugated anti-Rabbit antibody was used as the secondary antibody.)

Related Product Information for anti-LEPR antibody

Receptor for hormone LEP/leptin (Probable). On ligand binding, mediates LEP central and peripheral effects through the activation of different signaling pathways such as JAK2/STAT3 and MAPK cascade/FOS. In the hypothalamus, LEP acts as an appetite-regulating factor that induces a decrease in food intake and an increase in energy consumption by inducing anorexinogenic factors and suppressing orexigenic neuropeptides, also regulates bone mass and secretion of hypothalamo-pituitary-adrenal hormones (By similarity). In the periphery, increases basal metabolism, influences reproductive function, regulates pancreatic beta-cell function and insulin secretion, is pro-angiogenic and affects innate and adaptive immunity. Control of energy homeostasis and melanocortin production (stimulation of POMC and full repression of AgRP transcription) is mediated by STAT3 signaling, whereas distinct signals regulate NPY and the control of fertility, growth and glucose homeostasis. Involved in the regulation of counter-regulatory response to hypoglycemia by inhibiting neurons of the parabrachial nucleus. Has a specific effect on T lymphocyte responses, differentially regulating the proliferation of naive and memory T -ells. Leptin increases Th1 and suppresses Th2 cytokine production (By similarity).May transport LEP across the blood-brain barrier. Binds LEP and mediates LEP endocytosis. Does not induce phosphorylation of and activate STAT3. Antagonizes Isoform A and isoform B-mediated LEP binding and endocytosis.

NCBI and Uniprot Product Information

• NCBI GI #: 51093379
• NCBI GeneID: 3953
• NCBI Accession #: NP_001003679.1
• NCBI GenBank Nucleotide #: NM_001003679.3
• UniProt Accession #: P48357; Q13592; Q13593; Q13594; Q92919; Q92920; Q92921
• Molecular Weight: 132,494 Da
• NCBI Official Full Name: leptin receptor isoform 3
• NCBI Official Synonym Full Names: leptin receptor
• NCBI Official Symbol: LEPR
• NCBI Official Synonym Symbols: OBR; OB-R; CD295; LEP-R; LEPRD
• NCBI Protein Information: leptin receptor; huB219; OB receptor
• UniProt Protein Name: Leptin receptor
• Protein Family: Leptin receptor
• UniProt Gene Name: LEPR
• UniProt Synonym Gene Names: DB; OBR; LEP-R; OB-R
• UniProt Entry Name: LEPR_HUMAN

NCBI Description

The protein encoded by this gene belongs to the gp130 family of cytokine receptors that are known to stimulate gene transcription via activation of cytosolic STAT proteins. This protein is a receptor for leptin (an adipocyte-specific hormone that regulates body weight), and is involved in the regulation of fat metabolism, as well as in a novel hematopoietic pathway that is required for normal lymphopoiesis. Mutations in this gene have been associated with obesity and pituitary dysfunction. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. It is noteworthy that this gene and LEPROT gene (GeneID:54741) share the same promoter and the first 2 exons, however, encode distinct proteins (PMID:9207021).[provided by RefSeq, Nov 2010]

Uniprot Description

LEPR: the receptor for leptin (obesity factor). A single-transmembrane-domain receptor of the cytokine receptor family. On ligand binding, mediates signaling through JAK2/STAT3. Involved in the regulation of fat metabolism and, in a hematopoietic pathway, required for normal lymphopoiesis. May play a role in reproduction. Five alternatively spliced transcript variants have been reported.

Protein type: Membrane protein, integral; Receptor, cytokine

Chromosomal Location of Human Ortholog: 1p31

Cellular Component: integral to membrane; plasma membrane; extracellular region; receptor complex

Molecular Function: hematopoietin/interferon-class (D200-domain) cytokine receptor activity; identical protein binding; protein binding; transmembrane receptor activity

Biological Process: cholesterol metabolic process; cell surface receptor linked signal transduction; negative regulation of hydrolase activity; multicellular organismal development; negative regulation of gluconeogenesis; cytokine and chemokine mediated signaling pathway; energy reserve metabolic process

Disease: Leptin Receptor Deficiency