Recombinant Human Store-Operated Calcium Entry-Associated Regulatory Factor (SARAF) Protein (His-SUMO)

Name: Recombinant Human Store-Operated Calcium Entry-Associated Regulatory Factor (SARAF) Protein (His-SUMO)
Brand: Beta LifeScience
SKU: BLC-08748P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: All products, High-quality recombinant proteins, Other recombinant proteins

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Product Overview

Description	Recombinant Human Store-Operated Calcium Entry-Associated Regulatory Factor (SARAF) Protein (His-SUMO) is produced by our E.coli expression system. This is a cytoplasmic protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	Q96BY9
Target Symbol	SARAF
Synonyms	FLJ22274; FOAP 7; HBV X transactivated gene 3 protein; HBV X-transactivated gene 3 protein; HBV XAg-transactivated protein 3; HSPC035; MGC8721; Protein FOAP 7; Protein FOAP-7; TMEM 66; Tmem66; TMM66_HUMAN; Transmembrane protein 66; XTP3
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His-SUMO
Target Protein Sequence	SDGQYSPPPYSEYPPFSHRYQRFTNSAGPPPPGFKSEFTGPQNTGHGATSGFGSAFTGQQGYENSGPGFWTGLGTGGILGYLFGSNRAATPFSDSWYYPSYPPSYPGTWNRAYSPLHGGSGSYSVCSNSDTKTRTASGYGGTRRR
Expression Range	195-339aa
Protein Length	Cytoplasmic Domain
Mol. Weight	31.5kDa
Research Area	Biochemicals
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	Negative regulator of store-operated Ca(2+) entry (SOCE) involved in protecting cells from Ca(2+) overfilling. In response to cytosolic Ca(2+) elevation after endoplasmic reticulum Ca(2+) refilling, promotes a slow inactivation of STIM (STIM1 or STIM2)-dependent SOCE activity: possibly act by facilitating the deoligomerization of STIM to efficiently turn off ORAI when the endoplasmic reticulum lumen is filled with the appropriate Ca(2+) levels, and thus preventing the overload of the cell with excessive Ca(2+) ions.
Subcellular Location	Endoplasmic reticulum membrane; Single-pass type I membrane protein. Note=Translocates to the endoplasmic reticulum-plasma membrane (ER-PM) region in a STIM1-dependent manner following cytosolic Ca(2+) elevation.; [Isoform 2]: Endoplasmic reticulum membrane; Single-pass type I membrane protein.
Protein Families	SARAF family
Database References	HGNC: 28789 OMIM: 614768 KEGG: hsa:51669 STRING: 9606.ENSP00000256255 UniGene: PMID: 29223474 This activation was sensitive to Src kinase inhibition, but not to CAMKII nor PKC inhibition, a result that sets STIM1 and SOCE as downstream targets of the axis Src-Raf-MEK-ERK, rather than upstream regulators. PMID: 28866365 These findings suggest that the surface location of SARAF is dependent on the expression of STIM1 in the plasma membrane. PMID: 27414851 SARAF modulates TRPC1, but not TRPC6, channel function in a STIM1-independent manner PMID: 27506849 SARAF overexpression attenuated store operated Ca2+ entry and the STIM1-Orai1 interaction in cells endogenously expressing STIM1 and Orai1 while RNAi-mediated SARAF silencing induced opposite effects. PMID: 27068144 SARAF is constitutively expressed in the plasma membrane and interacts with Orai1. PMID: 26817842 Deletion of STIM1(448-490) and, in particular, STIM1(447-460) and STIM1(475-490) markedly enhances interaction of SARAF with STIM1. PMID: 23816623 Store-operated Ca2+ entry is remodelled and controls in vitro angiogenesis in endothelial progenitor cells isolated from tumoral patients. PMID: 23049731 Study shows that SARAF is an endoplasmic reticulum resident protein, which responds to cytosolic Ca2+ elevation after ER Ca2+ refilling by promoting a slow inactivation process of STIM2-dependent basal SOCE activity, as well as STIM1-mediated SOCE activity. PMID: 22464749

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.