Recombinant Human Signal-Regulatory Protein Gamma (SIRPG) Protein (His)

Name: Recombinant Human Signal-Regulatory Protein Gamma (SIRPG) Protein (His)
Brand: Beta LifeScience
SKU: BLC-09339P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: Cluster of differentiation (cd) proteins, Co-inhibitory receptors, Featured cd protein molecules, Featured immune checkpoint protein molecules, Immune checkpoint proteins, Recombinant proteins

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Product Overview

Description	Recombinant Human Signal-Regulatory Protein Gamma (SIRPG) Protein (His) is produced by our E.coli expression system. This is a extracellular protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	Q9P1W8
Target Symbol	SIRPG
Synonyms	D172 antigen like family member B; bA77C3.1; CD172 antigen-like family member B; CD172g; CD172g antigen; FLJ42230; RP11-77C3.2; Signal regulatory protein beta 2; Signal regulatory protein gamma; Signal-regulatory protein beta-2; Signal-regulatory protein gamma; SIRP B2; SIRP beta 2; SIRP gamma; SIRP-b2; SIRP-beta-2; SIRP-gamma; SIRPB2; SIRPG; SIRPG_HUMAN; SIRPgamma
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	EEELQMIQPEKLLLVTVGKTATLHCTVTSLLPVGPVLWFRGVGPGRELIYNQKEGHFPRVTTVSDLTKRNNMDFSIRISSITPADVGTYYCVKFRKGSPENVEFKSGPGTEMALGAKPSAPVVLGPAARTTPEHTVSFTCESHGFSPRDITLKWFKNGNELSDFQTNVDPTGQSVAYSIRSTARVVLDPWDVRSQVICEVAHVTLQGDPLRGTANLSEAIRVPPTLEVTQQPMRVGNQVNVTCQVRKFYPQSLQLTWSENGNVCQRETASTLTENKDGTYNWTSWFLVNISDQRDDVVLTCQVKHDGQLAVSKRLALEVTVHQKDQSSDATP
Expression Range	29-360aa
Protein Length	Extracellular Domain
Mol. Weight	40.8kDa
Research Area	Immunology
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	Probable immunoglobulin-like cell surface receptor. On binding with CD47, mediates cell-cell adhesion. Engagement on T-cells by CD47 on antigen-presenting cells results in enhanced antigen-specific T-cell proliferation and costimulates T-cell activation.
Subcellular Location	Membrane; Single-pass type I membrane protein.
Database References	HGNC: 15757 OMIM: 605466 KEGG: hsa:55423 STRING: 9606.ENSP00000305529 UniGene: Hs.590883
Tissue Specificity	Detected in liver, and at very low levels in brain, heart, lung, pancreas, kidney, placenta and skeletal muscle. Expressed on CD4+ T-cells, CD8+ T-cells, CD56-bright natural killer (NK) cells, CD20+ cells, and all activated NK cells. Mainly present in the

Gene Functions References

SIRPgamma in complex with FabOX117 forms a dimer in the crystal. Binding to the Fab fixes the position of domain 1 relative to domains 2/3 exposing a surface which favours formation of a homotypic dimer. PMID: 23826770
The independent non-obstructive azoospermia risk alleles are driven by variants in the protein-coding sequence of the two genes, SIRPA and SIRPG. PMID: 24162948
a novel member of the signal regulatory protein (SIRP) family- with unique characteristics from both alpha and beta genes- termed SIRPgamma PMID: 15294972
CD47 is enriched at endothelial junctions, and its interaction with SIRPgamma is required for human T-cell transendothelial migration PMID: 18524990
tumor necrosis factor receptor superfamily, member 14 (TNFRSF14) and signal regulatory protein, gamma (SIRPG) appear to contribute to gender difference in incidence of systemic lupus erythematosus. PMID: 19473566

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.