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You are here:Home » Antibodies » Antibodies-Obesity Proteins » Anti -Leptin Receptor (OBR, LEPR, B219, Obese Receptor)

Anti -Leptin Receptor (OBR, LEPR, B219, Obese Receptor)


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Clone Host Grade Applications
Polyclonal Rabbit Serum E
Obesity, a common nutritional disorder, is associated with diabetes, hypertension, hyperlipidemia, cancer and many other health related problems. At least five genes, Obese (ob), diabetes (db), fat (fat), agouti yellow (Ay), and tubby (tub) have been linked to obesity. Obese gene encodes an adipocyte-tissue derived secreted protein Ob protein/Leptin (146 amino acid, ~16kD) that controls body weight homeostasis. Leptin mediates its effects via the Leptin receptor or Obese receptors (OBR or LEPR) that is expressed in several tissues including hypothalamus. The Ob-R has at least 6 alternatively spliced forms (OBRa-f or LRa-f) that contain a common extracellular domain. The OBRa represents the initially identified mouse Ob-R (short form, 894aa). OBRa, -c, -d, and -f differ in sequence after Lys889 and have short (30-40 aa) cytoplasmic extension Mouse Ob-Rb (long form) displays ~78% homology to the human Ob-R (long form, 1165aa). OBRb has ~300 aa intracellular tail. Expression of Ob-Rb and other forms have been detected in hypothalamus and other tissues. OBRe lacks the transmembrane domain. The soluble Ob-Re is found in adipose tissues, hypothalamus, heart, and testes. Ob-R is abnormally spliced in db/db mice (truncation of cytoplasmic domain) that are important for leptin signaling. Leptin is structurally related to cytokine family and it activates cytokine-like signal transduction by stimulating the JAK-STAT pathway via the OBRb. The absence of functional leptin in ob/ob and the long form OBRb in db/db mice due to abnormal splicing produces severe obesity. The nature of leptin resistance in other obesity models is not clear.
Catalog #L1671-09A
ApplicationsSuitable for use in ELISA. Other applications not tested.
Recommended DilutionELISA: 1:10,000-50,000 10-100ng of control peptide/well.
Optimal dilutions to be determined by the researcher.
Control Peptide L1671-09B
Storage and StabilityMay be stored at 4°C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and add glycerol (40-50%). Freeze at -20°C. Aliquots are stable for at least 12 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Clone TypePolyclonal
ConcentrationAs reported
FormSupplied as a liquid, neat serum, 40% glycerol.
ImmunogenA 15 amino acid sequence near the N-terminus (extracellular domain) of mouse OBR (1). The peptide was coupled to KLH
SpecificityMouse sequence is common in all six alternatively spliced mouse/rat obese receptors (a-e forms). It is 86% conserved in human, porcine, monkey and African elephant OBR isoforms. Has no significant homology to gp130.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.

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