Recombinant Human Semaphorin-4D (SEMA4D) Protein (hFc), Active

Name: Recombinant Human Semaphorin-4D (SEMA4D) Protein (hFc), Active
Brand: Beta LifeScience
SKU: BLC-05810P
Availability: InStock

Greater than 95% as determined by SDS-PAGE.

Activity Measured by its binding ability in a functional ELISA. Immobilized human SEMA4D at 2 μg/ml can bind biotinylated Pepinemab, the EC 50 is 1.005-1.776 ng/mL. Biological Activity Assay

Activity Measured by its binding ability in a functional ELISA. Immobilized human SEMA4D at 5 μg/ml can bind human PLXNB1 , the EC 50 is 0.8179-1.357 μg/mL.

Collections: All products, Cluster of differentiation (cd) proteins, Featured cd protein molecules, High-quality recombinant proteins

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Product Overview

Description	Recombinant Human Semaphorin-4D (SEMA4D) Protein (hFc), Active is produced by our Mammalian cell expression system. This is a protein fragment.
Purity	Greater than 95% as determined by SDS-PAGE.
Endotoxin	Less than 1.0 EU/ug as determined by LAL method.
Activity	1. Measured by its binding ability in a functional ELISA. Immobilized human SEMA4D at 2 μg/mL can bind biotinylated Pepinemab, the EC 50 is 1.005-1.776 ng/mL. 2. Measured by its binding ability in a functional ELISA. Immobilized human SEMA4D at 5 μg/mL can bind human PLXNB1 , the EC 50 is 0.8179-1.357 μg/mL.
Uniprotkb	Q92854
Target Symbol	SEMA4D
Synonyms	(A8)(BB18)(GR3)(CD100)
Species	Homo sapiens (Human)
Expression System	Mammalian cell
Tag	C-hFc
Target Protein Sequence	MAFAPIPRITWEHREVHLVQFHEPDIYNYSALLLSEDKDTLYIGAREAVFAVNALNISEKQHEVYWKVSEDKKAKCAEKGKSKQTECLNYIRVLQPLSATSLYVCGTNAFQPACDHLNLTSFKFLGKNEDGKGRCPFDPAHSYTSVMVDGELYSGTSYNFLGSEPIISRNSSHSPLRTEYAIPWLNEPSFVFADVIRKSPDSPDGEDDRVYFFFTEVSVEYEFVFRVLIPRIARVCKGDQGGLRTLQKKWTSFLKARLICSRPDSGLVFNVLRDVFVLRSPGLKVPVFYALFTPQLNNVGLSAVCAYNLSTAEEVFSHGKYMQSTTVEQSHTKWVRYNGPVPKPRPGACIDSEARAANYTSSLNLPDKTLQFVKDHPLMDDSVTPIDNRPRLIKKDVNYTQIVVDRTQALDGTVYDVMFVSTDRGALHKAISLEHAVHIIEETQLFQDFEPVQTLLLSSKKGNRFVYAGSNSGVVQAPLAFCGKHGTCEDCVLARDPYCAWSPPTATCVALHQTESPSRGLIQEMSGDASVCPDKSKGSYRQHFFKHGGTAELKCSQKSNLARVFWKFQNGVLKAESPKYGLMGRKNLLIFNLSEGDSGVYQCLSEERVKNKTVFQVVAKHVLEVKVVPKPVVAPTLSVVQTEGSRIATKVLVASTQGSSPPTPAVQATSSGAITLPPKPAPTGTSCEPKIVINTVPQLHSEKTMYLKSSDNR
Expression Range	22-734aa
Protein Length	Partial
Mol. Weight	108.1 kDa
Research Area	Immunology
Form	Lyophilized powder
Buffer	Lyophilized from a 0.2 μm filtered PBS, 6% Trehalose, pH 7.4
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	Cell surface receptor for PLXNB1 and PLXNB2 that plays an important role in cell-cell signaling. Regulates GABAergic synapse development. Promotes the development of inhibitory synapses in a PLXNB1-dependent manner. Modulates the complexity and arborization of developing neurites in hippocampal neurons by activating PLXNB1 and interaction with PLXNB1 mediates activation of RHOA. Promotes the migration of cerebellar granule cells. Plays a role in the immune system; induces B-cells to aggregate and improves their viability (in vitro). Induces endothelial cell migration through the activation of PTK2B/PYK2, SRC, and the phosphatidylinositol 3-kinase-AKT pathway.
Subcellular Location	Cell membrane; Single-pass type I membrane protein.
Protein Families	Semaphorin family
Database References	HGNC: 10732 OMIM: 601866 KEGG: hsa:10507 STRING: 9606.ENSP00000348822 UniGene: PMID: 29434448 SEMA4D coordinates with VEGF during angiogenesis via plexin-B1 in epithelial ovarian cancer. PMID: 29308068 knockdown of Sema4D in Head and neck squamous cell carcinomas (HNSCCs)cells inhibited tumor growth and decreased the number of osteoclasts in a mouse xenograft model. Taken together, IGF-I-driven production of Sema4D in HNSCCs promotes osteoclastogenesis and bone invasion. PMID: 28656278 The results obtained make significant adjustments in understanding of Seam4D effects in lymphoid cells. PMID: 28508207 describe the transfection, purification, and visualization of Fc-tagged SEMA4D (semaphorin 4D) recombinant protein PMID: 27787840 describe the application of in vitro migration and tubulogenesis assays and the directed in vivo angiogenesis assay (DIVAA) in the measurement of the angiogenic potential of cell-derived and soluble SEMA4D PMID: 27787869 The positive expression of both Sema4D and PlexinB1 was found to be an independent risk factor for a worse survival in colorectal cancer. PMID: 27456345 Serum levels of soluble SEMA4D were elevated in patients with ANCA-associated vasculitis. Cell-surface expression of SEMA4D was downregulated, a consequence of proteolytic cleavage of membrane SEMA4D. Soluble SEMA4D exerted pro-inflammatory effects on endothelial cells. Membranous SEMA4D on neutrophils bound to plexin B2 on endothelial cells, and this interaction decreased NET formation. PMID: 28416516 We identified a novel genome-wide significant African-specific locus for BMI (SEMA4D, rs80068415). A novel variant in SEMA4D was significantly associated with body mass index. Carriers of the C allele were 4.6 BMI units heavier than carriers of the T allele. PMID: 28296344 A critical pathogenic engagement of Semaphorin 4D produced by gamma delta T cells in the development of medication-related osteonecrosis of the jaw PMID: 27720716 Our results identified FGL2, GAL, SEMA4D, SEMA7A, and IDO1 as new candidate genes that could be involved in MSCs-mediated immunomodulation. FGL2, GAL, SEMA4D, SEMA7A, and IDO1 genes appeared to be differentially transcribed in the different MSC populations. Moreover, these genes were not similarly modulated following MSCs-exposure to inflammatory signals PMID: 28336906 Interferon-alpha-induced CD100 expression on naive CD8(+) T cells enhances antiviral responses to hepatitis C infection through CD72 signal transduction. PMID: 28222623 In this review, we summarized the current findings on neuroimmune Sema4A and Sema4D molecules in chronic inflammation underlying many diseases and discussed their positive or negative impacts on the implicated molecular and cellular processes PMID: 27554682 we have identified a novel reverse signaling pathway acting through Tiam1 and Rac that promotes aggressive behavior in OSCC expressing S4D and PB1. PMID: 28038319 sema 4D was the direct target of miR-214 and was negatively regulated by miR-214 in ovarian cancer cells PMID: 26718213 Tax and semaphorin 4D released from lymphocytes infected with human lymphotropic virus type 1 and inhibit neurite growth in a neuron cell line. PMID: 26389656 This assay specifically and reproducibly measured cSEMA4D saturation and expression levels. Evaluation of the SEMA4D-specific PD markers were critical in determining the clinical saturation threshold of cSEMA4D by VX15/2503 PMID: 26566052 Serum sSema4D levels are increased in patients with atrial fibrillation and are independently associated with atrial remodeling PMID: 26417899 Semaphorin 4D Promotes Skeletal Metastasis in Breast Cancer. PMID: 26910109 this study describes a novel immunosuppressive role for Sema4D in head and neck squamous cell carcinoma through induction of myeloid derived suppressor cells PMID: 26740106 Plexin-B1 induces cutaneous squamous cell carcinoma cell proliferation, migration, and invasion by interacting with Sema4D. Plexin-B1 might serve as a useful biomarker and/or as a novel therapeutic target for cSCC. PMID: 26051877 Results show that decreased expression of Sema4D, plexin-B1 and -B2 was associated with local recurrence and poor prognosis of breast neoplasm. PMID: 26035216 Blocking of CD100, plexin B1 and/or B2 in adhesion experiments have shown that both CD100 and plexins act as adhesion molecules involved in monocyte-endothelial cell binding. PMID: 26275342 Suggest that HIF-1alpha and Sema4D expression correlates with histological tumor type, TNM stage, and lymphatic metastasis in colorectal carcinoma. PMID: 25717256 A positive feedback loop involving sSema4D/IL-6 and TNFalpha/ADAMTS-4 may contribute to the pathogenesis of rheumatoid arthritis. PMID: 25707877 Sema4D contributes to enhanced invasion and tumor progression through increased motility of cervical cancer and VEGF-C/-D-mediated lymphangiogenesis. PMID: 24603190 SEMA4D might possibly serve as a reliable tool for early and accurate prediction of EOC poor prognosis. PMID: 24289594 results suggest that the contribution of Sema4D in platelets applies to ITAM-containing receptors as a class PMID: 24131822 Sema4D could play an important role in promoting tumor proliferation, migration and metastasis in the NSCLC, by influencing the Akt protein phosphorylation. Inhibition of Sema4D may be a useful approach for the treatment of NSCLC. PMID: 25135716 Data suggest that CD100 seems to be involved in hepatitis C virus (HCV) clearance by natural killer (NK) cells. PMID: 25108441 The Semaphorin 4D-Plexin-B1-RhoA signaling axis recruits pericytes and regulates vascular permeability through endothelial production of PDGF-B and ANGPTL4. PMID: 24114199 Elevated plasma soluble Sema4D/CD100 levels are associated with disease severity in patients of hemorrhagic fever with renal syndrome. PMID: 24040126 CD100 may have a role in atherosclerotic plaque development, and may possibly be employed in targeted treatments of these atheromas. PMID: 24098722 There was an increased level of plasma soluble Sema4 in the Sema4D(high) population of T-cells suggesting a potential role of these T-cells in heart failure. PMID: 23741311 The membrane-proximal cytoplasmic domain of Sema4D contains a binding site for calmodulin within the polybasic region Arg762-Lys779, that regulates Sema4D exodomain shedding in platelets. PMID: 23564909 copy number loss of the Sema4D gene region may play a role in the etiology of acetabular dysplasia PMID: 23335257 Lycorine hydrochloride suppressed the expression of several key angiogenic genes, including VE-cadherin and Sema4D, and reduced Akt phosphorylation in Hey1B cells. PMID: 23376478 CD72 mRNA expression level correlates with Sema4D expression in peripheral blood mononuclear cells in immune thrombocytopenia. PMID: 22111667 CD100 protein levels were highly dysregulated around 10 weeks of gestation in first and second miscarriage placentas. The CD100 soluble form was produced and immediately shed from placental tissue in all samples. PMID: 22606231 The expression of semaphorin 4D (SEMA4D), which is under the control of the HIF-family of transcription factors, cooperates with VEGF to promote tumor growth and vascularity in oral squamous cell carcinoma (OSCC). PMID: 22652457 Sema4D, the ligand for Plexin B1, suppresses c-Met activation and migration and promotes melanocyte survival and growth. PMID: 22189792 Sema4D potentiates the invasiveness of pancreatic cancer cells. The binding of Sema4D to plexinB1 induced small GTPase Ras homolog gene family, member A activation and resulted in the phosphorylation of MAPK and Akt. PMID: 21812859 From the data obtained in this study, SEMA4D may have a role in more aggressive and potentially metastatic breast tumours. PMID: 21925246 Rho-mediated activation of PI(4)P5K and lipid second messengers is necessary for promotion of angiogenesis by Semaphorin 4D. PMID: 21538148 dysregulations in CD100 expression and release could play a role in SSc development and/or maintenance. PMID: 21244334 crystal structures of cognate complexes of the semaphorin-binding regions of plexins B1 and A2 with semaphorin ectodomains (human PLXNB1(1-2)-SEMA4D(ecto) and murine PlxnA2(1-4)-Sema6A(ecto)), plus unliganded structures of PlxnA2(1-4) and Sema6A(ecto) PMID: 20877282 CD100-CD72 interaction can be the mechanism by which NK cell communicate with B cells. PMID: 17786190 Leukemic & normal CD5+ B cells express CD100; upon interaction between CD100 & Plexin-B1, both increase their proliferative activity & life span. CD100/Plexin-B1 crosstalk is not malignancy related but reproduces a mechanism used by normal CD5+ B cells. PMID: 12406905 Soluble CD100 induces a progressive decrease in process extension of oligodendrocytes, followed by their death and the death of multipotent neural precursors. PMID: 14707103 up-modulation of the survival receptor CD100 is restricted to proliferating B-cell leukemia cells PMID: 15613544

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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.