Recombinant Human Pregnancy-Specific Beta-1-Glycoprotein 1 (PSG1) Protein (His)

Name: Recombinant Human Pregnancy-Specific Beta-1-Glycoprotein 1 (PSG1) Protein (His)
Brand: Beta LifeScience
SKU: BLC-00678P
Availability: InStock

Greater than 85% as determined by SDS-PAGE.

Collections: High-quality recombinant proteins, Other recombinant proteins

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Product Overview

Description	Recombinant Human Pregnancy-Specific Beta-1-Glycoprotein 1 (PSG1) Protein (His) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	P11464
Target Symbol	PSG1
Synonyms	(PS-beta-G-1)(PSBG-1)(Pregnancy-specific glycoprotein 1)(CD66 antigen-like family member F)(Fetal liver non-specific cross-reactive antigen 1/2)(FL-NCA-1/2)(PSG95)(Pregnancy-specific beta-1 glycoprotein C/D)(PS-beta-C/D)(CD antigen CD66f)
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	QVTIEAEPTKVSEGKDVLLLVHNLPQNLTGYIWYKGQMRDLYHYITSYVVDGEIIIYGPAYSGRETAYSNASLLIQNVTREDAGSYTLHIIKGDDGTRGVTGRFTFTLHLETPKPSISSSNLNPRETMEAVSLTCDPETPDASYLWWMNGQSLPMTHSLKLSETNRTLFLLGVTKYTAGPYECEIRNPVSASRSDPVTLNLLPKLPKPYITINNLNPRENKDVLNFTCEPKSENYTYIWWLNGQSLPVSPRVKRPIENRILILPSVTRNETGPYQCEIRDRYGGIRSDPVTLNVLYGPDLPRIYPSFTYYRSGEVLYLSCSADSNPPAQYSWTINEKFQLPGQKLFIRHITTKHSGLYVCSVRNSATGKESSKSMTVEVSDWTVP
Expression Range	35-419aa
Protein Length	Full Length of Mature Protein
Mol. Weight	49.5 kDa
Research Area	Tags & Cell Markers
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

Subcellular Location	Secreted.
Protein Families	Immunoglobulin superfamily, CEA family
Database References	HGNC: 9514 OMIM: 176390 KEGG: hsa:5669 STRING: 9606.ENSP00000244296 UniGene: Hs.709192

Gene Functions References

Inhibiting PSG1 can effectively reduce chemoresistance via a transforming growth factor-beta (TGF-beta)-related pathway in ER-negative breast cancer cells. PMID: 27653744
PSG stimulated IDO activity under the conditions of induction of the monocytes by interferon-gamma. PMID: 27595833
Under conditions of directed induction of phenotypic changes in CD4(+) lymphocytes to regulatory T cells (Treg), pregnancy-specific at high concentrations (10 and 100 mug/mL) increased FOXP3 expression. The evaluation of the spontaneous expression level of FOXP3 mRNA showed that pregnancy-specific beta1-glycoprotein (1 and 100 mug/mL) stimulated the expression of this factor in mononuclear cells and isolated CD4(+) lym... PMID: 27817017
results identify a non-placental site of PSG expression in the gut and associated tumors, with implications for determining whether PSGs have a role in tumor progression, and utility as tumor biomarkers. PMID: 26926266
the presence of GAGs on the surface of endothelial cells was required for the ability of PSG1 to induce tube formation PMID: 21193412
The aspartic acid at position 95 is not required for PSG1 activity but the amino acids implicated in the formation of a salt bridge within the N-domain are essential. PMID: 20335639
first trimester maternal serum marker of small-for-gestational age and preterm delivery PMID: 19911417
Human PSG1a induces alternative activation in human & mouse monocytes & suppresses the accessory-cell-dependent T-cell proliferation. PSG1a contributes to immunomodulation during pregnancy, with opposite effects on maternal innate & adaptative systems. PMID: 12223519
The differential expression of HLA-E and PSG1 in the sperm of fertile and infertile men is discussed. PMID: 18987160

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.