Recombinant Human Homer Protein Homolog 1 (HOMER1) Protein (His)

Name: Recombinant Human Homer Protein Homolog 1 (HOMER1) Protein (His)
Brand: Beta LifeScience
SKU: BLC-08473P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: High-quality recombinant proteins, Other recombinant proteins

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Product Overview

Description	Recombinant Human Homer Protein Homolog 1 (HOMER1) Protein (His) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	Q86YM7
Target Symbol	HOMER1
Synonyms	HOME1_HUMAN; Homer ; HOMER 1A; HOMER 1B ; HOMER 1C; Homer homolog 1 (Drosophila); homer homolog 1; Homer protein homolog 1; homer scaffolding protein 1; Homer; Drosophila; homolog of; 1; Homer; neuronal immediate early gene; 1 ; Homer-1; Homer1; HOMER1A; HOMER1B; HOMER1C; SYN47 ; Ves 1
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	MGEQPIFSTRAHVFQIDPNTKKNWVPTSKHAVTVSYFYDSTRNVYRIISLDGSKAIINSTITPNMTFTKTSQKFGQWADSRANTVYGLGFSSEHHLSKFAEKFQEFKEAARLAKEKSQEKMELTSTPSQESAGGDLQSPLTPESINGTDDERTPDVTQNSEPRAEPTQNALPFSHSSAISKHWEAELATLKGNNAKLTAALLESTANVKQWKQQLAAYQEEAERLHKRVTELECVSSQANAVHTHKTELNQTIQELEETLKLKEEEIERLKQEIDNARELQEQRDSLTQKLQEVEIRNKDLEGQLSDLEQRLEKSQNEQEAFRNNLKTLLEILDGKIFELTELRDNLAKLLECS
Expression Range	1-354aa
Protein Length	Full Length
Mol. Weight	44.3kDa
Research Area	Neuroscience
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Postsynaptic density scaffolding protein. Binds and cross-links cytoplasmic regions of GRM1, GRM5, ITPR1, DNM3, RYR1, RYR2, SHANK1 and SHANK3. By physically linking GRM1 and GRM5 with ER-associated ITPR1 receptors, it aids the coupling of surface receptors to intracellular calcium release. May also couple GRM1 to PI3 kinase through its interaction with AGAP2. Isoform 1 regulates the trafficking and surface expression of GRM5. Isoform 3 acts as a natural dominant negative, in dynamic competition with constitutively expressed isoform 1 to regulate synaptic metabotropic glutamate function. Isoform 3, may be involved in the structural changes that occur at synapses during long-lasting neuronal plasticity and development. Forms a high-order complex with SHANK1, which in turn is necessary for the structural and functional integrity of dendritic spines. Negatively regulates T cell activation by inhibiting the calcineurin-NFAT pathway. Acts by competing with calcineurin/PPP3CA for NFAT protein binding, hence preventing NFAT activation by PPP3CA.
Subcellular Location	Cytoplasm. Cell junction, synapse, postsynaptic density. Cell junction, synapse. Cell projection, dendritic spine.
Protein Families	Homer family
Database References	HGNC: 17512 OMIM: 604798 KEGG: hsa:9456 STRING: 9606.ENSP00000334382 UniGene: Hs.591761

Gene Functions References

Monomeric Homer 1a proteins increase activity of Imin channels, but did not modulate their electrophysiological properties. Recombinant Homer 1c protein did not block the induced calcium currents. PMID: 29923011
Study found the common variant rs7713917 in the HOMER1 gene to be significantly associated with suicide attempt in Chinese patient. PMID: 30219717
Homer 1 rs7713917 gene variant associated with brain structure and function, severity of depression, and antidepressant response in patients affected by a major depressive episode in course of bipolar disorder. PMID: 29079138
This study demonstrate that altered Homer1a levels in specific brain regions and cell types of patients suffering from schizophrenia, bipolar disorder and major depression. PMID: 28815330
Study shows that Homer1b/c is constitutively expressed in astrocytes, where it clusters with mGlu5 and endoplasmic reticulum tubules to form sub-plasmalemmal microdomains; propose that Homer1a may represent one of the cellular mechanisms by which inflammatory astrocytic reactions are beneficial for limiting brain injury PMID: 27075036
Resequencing three candidate genes (HOMER1, SLC6A4, and TEF) discovers seven potentially deleterious variants susceptibility to major depressive disorder and suicide attempts in Chinese. PMID: 27964944
The present study was undertaken to determine the expression and functional significance of Homer1b/c in multiple myeloma PMID: 26718835
The main focus of the present review is to offer an overview of the current knowledge about the potential role of Homer1a in depression and the signaling pathways responsible for Homer1a regulation. [review] PMID: 26641965
The mRNA levels of Homer1, IL-1beta, and TNF-alpha in coronary artery disease patients were significantly higher than those in the control group, but not Homer2 and Homer3. PMID: 25551602
these findings provide evidence for a new role of Homer1 supporting the regulation of Cav1.2 channels by STIM1. PMID: 25712868
Homer1 promotes lymphatic invasion and associates with lymph node metastasis and poor prognosis of intrahepatic cholangiocarcinoma. PMID: 24815486
data suggest that HOMER1 rs4704559 G allele has a protective role for the development of levodopa adverse effects PMID: 24126708
Polymorphisms of DRD1, DLG4 and HOMER1 are associated with opiate abuse. PMID: 23044706
Overexpression of HOMER1A reduces neuropathic pain hypersensitivity. PMID: 23685007
The uncoupling of synaptic protein homer 1c from target proteins activates store-operated calcium entry in a neurotransmitter-like manner in human neuroblastoma cells. PMID: 23821062
This review discusses the association of Homer 1 variants with the etiology of many neurological diseases, such as pain, mental retardation syndromes, Alzheimer's disease, schizophrenia, addiction and traumatic brain injury. PMID: 22749857
HOMER1 encodes a postsynaptic density-localized scaffolding protein that interacts with Shank3 to regulate mGluR activity, and is a novel autism-risk gene. PMID: 22558107
This study reported significant associations between different polymorphisms of the HOMER 1 gene and psychopathology of schizophrenic patients at baseline and between HOMER 1 polymorphisms and therapy response after treatment with atypical antipsychotics. PMID: 20598711
Homer dissociation from its targets evoked by the PPKKFR peptide led to Imin calcium channel activation but not to Imax calcium channel activation in A431 cells. PMID: 20926133
HOMER1 plays a role in the etiology of major depression and genetic variation affects depression via the dysregulation of cognitive and motivational processes. PMID: 20673876
Homer1a transgene expression is transiently upregulated during increases in network activity and evokes agonist-independent signaling of group I metabotropic glutamate receptors that scales down expression of synaptic AMPA receptors. PMID: 21172614
HOMER1 was screened for an association with schizophrenia. PMID: 12815733
Polymorphism in the Homer1 gene is a potential risk factor for the development of cocaine dependence in an African American population. PMID: 16314758
Data indicate that Homer1 plays a critical role in determining the apoptotic susceptibility to TRAIL. PMID: 19376111
study implicates the effects of allele A of the rs4704559 marker in susceptibility to psychotic symptoms in Parkinson disease PMID: 19648775

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.