Recombinant Human O-phosphoseryl-tRNA (SEPSECS) Protein (His)

Name: Recombinant Human O-phosphoseryl-tRNA (SEPSECS) Protein (His)
Brand: Beta LifeScience
SKU: BLC-03553P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

Product Overview

Description	Recombinant Human O-phosphoseryl-tRNA (SEPSECS) Protein (His) is produced by our E.coli expression system. This is a protein fragment.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	Q9HD40
Target Symbol	SEPSECS
Synonyms	DKFZp434B1417; Liver pancreas antigen; Liver-pancreas antigen; LP; MGC161491; O phosphoseryl tRNA(Sec) selenium transferase; O-phosphoseryl-tRNA(Sec) selenium transferase; Sec synthase; Selenocysteine synthase; Selenocysteinyl tRNA(Sec) synthase; Selenocysteinyl-tRNA(Sec) synthase; Sep (O phosphoserine) tRNA:Sec (selenocysteine) tRNA synthase; Sep tRNA:Sec tRNA synthase; Sep-tRNA:Sec-tRNA synthase; SepSecS; SLA; SLA p35; SLA-p35; SLA/LP; SLA/LP autoantigen; Soluble liver antigen; Soluble liver antigen/liver pancreas antigen; Soluble Liver/Pancreas Antigen; SPCS_HUMAN; tRNA(Ser/Sec) associated antigenic protein; tRNA(Ser/Sec)-associated antigenic protein; TRNP48; UGA suppressor tRNA associated protein; UGA suppressor tRNA-associated protein
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	SFAAGERLVSPAYVRQGCEARRSHEHLIRLLLEKGKCPENGWDESTLELFLHELAIMDSNNFLGNCGVGEREGRVASALVARRHYRFIHGIGRSGDISAVQPKAAGSSLLNKITNSLVLDIIKLAGVHTVANCFVVPMATGMSLTLCFLTLRHKRPKAKYIIWPRIDQKSCFKSMITAGFEPVVIENVLEGDELRTDLKAVEAKVQELGPDCILCIHSTTSCFAPRVPDRLEELAVICANYDIPHIVNNAYGVQSSKCMHLIQQGARVGRIDAFVQSLDKNFMVPVGGAIIAGFNDSFIQEISKMYPGRASASPSLDVLITLLSLGSNGYKKLLKERKEMFSYLSNQIKKLSEAYNERLLHTPHNPISLAMTLKTLDEHRDKAVTQLGSMLFTRQVSGARVVPLGSMQTVSGYTFRGFMSHTNNYPCAYLNAASAIGMKMQDVDLFI
Expression Range	5-451aa
Protein Length	Partial
Mol. Weight	53.4kDa
Research Area	Metabolism
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	Converts O-phosphoseryl-tRNA(Sec) to selenocysteinyl-tRNA(Sec) required for selenoprotein biosynthesis.
Subcellular Location	Cytoplasm.
Protein Families	SepSecS family
Database References	HGNC: 30605 OMIM: 613009 KEGG: hsa:51091 STRING: 9606.ENSP00000371535 UniGene: Hs.253305
Associated Diseases	Pontocerebellar hypoplasia 2D (PCH2D)
Tissue Specificity	Primarily expressed in liver, pancreas, kidney and lung. Overexpressed in PHA-stimulated T-cells.

Gene Functions References

Structural basis for early-onset neurological disorders caused by mutations in human selenocysteine synthase has been described. PMID: 27576344
Epileptic encephalopathy with burst suppression without brain malformations is associated with pathogenic variation in SEPSECS. PMID: 28133863
The progression of clinical symptoms in these families is evidently slower than in previously reported cases, and the cerebellar atrophy milder by brain MRI, indicating that SEPSECS mutations are also involved in milder late-onset cerebellar atrophy. PMID: 26888482
results suggest SEPSECS as a candidate gene for progressive encephalopathies with lactate elevation. PMID: 26115735
structural analysis of the terminal catalytic complex in selenocysteine synthesis PMID: 25190812
Data suggest SEPSECS silencing in placental trophoblasts inhibits proliferation, induces apoptosis, and reduces production of progesterone/chorionic gonadotropin (P/hCG); SEPSECS over-expression promotes cell proliferation and secretion of P/hCG. PMID: 23966103
The human SepSecS protein is also known as soluble liver antigen/liver pancreas (SLA/LP), which represents one of the antigens of autoimmune hepatitis. PMID: 20623998
SepSecS mutations cause autosomal-recessive progressive cerebellocerebral atrophy in Jews of Iraqi and Moroccan ancestry. PMID: 20920667
detectable in liver extracts of autoimmune hepatitis patients' cells as the major autoantigenic component PMID: 19683415
crystal structure of tRNA(Sec) in complex with SepSecS, phosphoserine, and thiophosphate, together with in vivo and in vitro enzyme assays, supports a pyridoxal phosphate-dependent mechanism of Sec-tRNA(Sec) formation PMID: 19608919

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.