Recombinant Human Histamine H3 receptor (HRH3)

Code CSB-CF897568HU
Size Pls inquire
Source in vitro E.coli expression system
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Product Details

Target Names
Uniprot No.
Alternative Names
HRH3; GPCR97; Histamine H3 receptor; H3R; HH3R; G-protein coupled receptor 97
Homo sapiens (Human)
Expression Region
Target Protein Sequence
Protein Length
full length protein
Tag Info
Tag type will be determined during the manufacturing process.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization
Tris/PBS-based buffer, 6% Trehalose, pH 8.0
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Please contact us to get it.

Customer Reviews and Q&A

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Target Background

The H3 subclass of histamine receptors could mediate the histamine signals in CNS and peripheral nervous system. Signals through the inhibition of adenylate cyclase and displays high constitutive activity (spontaneous activity in the absence of agonist). Agonist stimulation of isoform 3 neither modified adenylate cyclase activity nor induced intracellular calcium mobilization.
Gene References into Functions
  1. These results indicate that in SH-SY5Y cells, hH3R445 and hH3R365 isoforms regulate in a differential manner the signaling pathways triggered by receptor activation. PMID: 29557708
  2. results indicate that the single-point Y197C mutation, in the aminus region of TM5 of the hH3R445, does not affect the expression, ligand binding or signaling of the receptor PMID: 28126588
  3. We detected high H3R expression in oligodendroglial cells from demyelination lesions in human samples of patients with MS, and validated a genetic association between an exonic single nucleotide polymorphism in HRH3 and susceptibility to multiple sclerosis. PMID: 29253893
  4. These findings for the first time screen out one SNP (rs3787429) of HRH3 gene that was significantly associated with CHF in Chinese Han population PMID: 26989676
  5. Decrease in histamine H3 receptor function was linked to epileptic activity in the hippocampus and temporal neocortex of patients with pharmacoresistant mesial temporal lobe epilepsy. PMID: 26915454
  6. Molecular modelling studies, including molecular dynamic simulations and calculation of Gibbs energy of solvation of hH3R and hH4R, were studied. PMID: 25098339
  7. The polymorphisms of HNMT and HRH3 were irrelevant with breast cancer in the present study. PMID: 24835231
  8. the anatomical localization of Hreceptors suggests a complex interaction that could both enhance and inhibit dopaminergic neurotransmission; tt is conceivable that Hreceptors can moderate the development and maintenance of drug addiction. PMID: 23647606
  9. The A280V mutation reduces the signalling efficacy of the human H3 receptor; this effect may be relevant to the pathophysiology of disorders associated with the mutation PMID: 23713487
  10. Report synthesis/functional characterization of imbutamine analogs as histamine H3 agonists. PMID: 24493592
  11. In this review, we focus on the role of histamine and its receptors in the treatment of Alzheimer's disease. PMID: 23677734
  12. [review] The H1, H2, and H3 receptors are all involved in recovery of neurological function when extracellular histamine is gradually increasing, after cerebral ischemia. PMID: 22860191
  13. mRNA expression of HRH-3 localized in large pigmented neurons is significantly decreased in the substantia nigra of Parkinson's patients. PMID: 22118942
  14. ZEL-H16 is a novel and potent nonimidazole agonist of H3R, which might serve as a pharmacological tool for future investigations or as possible therapeutic agent of H3R. PMID: 22870296
  15. Significant association of HRH3 with antipsychotic efficacy was detected. PMID: 21652606
  16. study identified novel functional properties in terms of voltage sensitivities and deactivation rates, which differed between the histamine hH3445, hH3365, and H4 receptors PMID: 22885137
  17. Histamine H3 receptor levels are unchanged in subcortical ischemic vascular dementia and mixed dementias in all brain areas studied. PMID: 22129936
  18. The hydrophobic amino acids in putative helix 8 in carboxy-terminus of histamine H(3) receptor are involved in receptor-G-protein coupling. PMID: 21749919
  19. Data suggest that V-allele genotypes in the H3 receptor gene increase inactive receptors, enhancing inhibition of negative feedback mechanism on the H3 receptor and increasing histamine release, correlating with migraine attacks in susceptible patients. PMID: 21376262
  20. This review outlines the relevance of the histaminergic system in controlling feeding behavior and evaluates the potential role of the histamine H3 receptor as a target for regulating obesity. PMID: 20864503
  21. Modulation of PKCalpha by histamine receptors may be important in regulating cholangiocarcinoma growth. PMID: 19825989
  22. Analogous to the effects of alpha(2)-adrenoceptors, which also act prejunctionally to inhibit norepinephrine release, H(3)R-mediated antiexocytotic effects could result from a decreased Ca(2+) influx into nerve endings PMID: 11752397
  23. The structure of HRH3 has been determined and a missense mutation (Ala280Val) identified in a patient with Shy-Drager syndrome. PMID: 11956964
  24. Molecular cloning of functionally distinct isoforms of the human histamine H(3) receptor PMID: 12069903
  25. Densities of histamine H(3) receptor sites were significantly decreased in patient material. PMID: 12971961
  26. absence of H3 receptor in human skin mast cells PMID: 15191551
  27. The human H(3)receptor gene suggested to consist of either 3 exons and 2 introns, or 4 exons and 3 introns, with ...additional exon accounting for...8 additional carboxy(C)-terminal amino some human H(3) receptor sequences PMID: 15665857
  28. we describe the biological and chemical implications for developing H3 receptor antagonists and their therapeutic potential as disclosed through animal models of cognition, sleep, and obesity. PMID: 16565470
  29. The purpose of this study was to identify the structural requirements for H3 antagonistic activity via quantitative structure-activity relationship (QSAR) studies and receptor modeling/docking techniques. PMID: 17561422
  30. Histamine excites human enteric neurones and this effect involves histamine H1-4 receptors. PMID: 17627982
  31. Data show that histamine regulates pancreatic carcinoma cell growth through H3 and H4 receptors. PMID: 18345506
  32. H(3)R is localized mainly around submucosal glands and plays an important role in the secretion of submucosal glands in the nose. PMID: 18564330
  33. role in neurogenic inflammation PMID: 18802338
  34. D1-H3 receptor heteromers constitute unique devices that can direct dopaminergic and histaminergic signalling towards the MAPK pathway in a G(s)-independent and G(i)-dependent manner. PMID: 19413572
  35. Histamine H3 receptors in the prefrontal cortex take part in the modulation of cognition, which is impaired in schizophrenic subjects and bipolar subjects with psychotic symptoms. PMID: 19413576

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Subcellular Location
Cell membrane; Multi-pass membrane protein.
Protein Families
G-protein coupled receptor 1 family
Tissue Specificity
Expressed predominantly in the CNS, with the greatest expression in the thalamus and caudate nucleus. The various isoforms are mainly coexpressed in brain, but their relative expression level varies in a region-specific manner. Isoform 3 and isoform 7 are
Database Links

HGNC: 5184

OMIM: 604525

KEGG: hsa:11255

STRING: 9606.ENSP00000342560

UniGene: Hs.251399

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