You searched for: Proteins and Peptides

Supplier: Biorbyt

Human A1M (from Urine (patients with chronic renal tubular proteinuria))

Supplier: ACROBIOSYSTEMS

Human recombinant Coagulation factor XI (from HEK293 cells)

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Human recombinant integrin alpha 11 beta 1 (from HEK293)

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Human recombinant CD8 alpha & beta (from HEK293 cells)

Supplier: STEMCELL Technologies

A cellular protein for detection of apoptotic cells, FITC-conjugated.

Supplier: ACROBIOSYSTEMS

Human recombinant IL-13 R alpha 2 (from HEK293 cells)

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Human recombinant IL-12 R beta 1 (from HEK293 cells)

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Human recombinant CD8 alpha (from HEK293 cells), Biotin

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Mouse recombinant IL-3 R alpha (from HEK293 cells)

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Cynomolgus monkey recombinant IL-33 (from HEK293 cells)

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Human PLAU / uPA Protein, His Tag (activated by trypsin) (active enzyme).

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Human TrkA / NTRK1 (33-417) Protein, Mouse IgG2a Fc Tag.

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Human TrkA / NTRK1 (192-402) Protein, Mouse IgG2a Fc Tag.

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Human recombinant Fc gamma RIIIB / CD16b (NA1) (from HEK293)

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Human recombinant Fc gamma RIIIB/ CD16b (NA1) (from HEK293 cells)

Supplier: STEMCELL Technologies

Fluorescent dye conjugates for staining cell membranes of gram-positive bacteria, mammalian cells, and yeast bud scars - 1000 µg.

Supplier: STEMCELL Technologies

Stimulating T cells with EBV (HLA Class I Control) peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. EBV (HLA Class I Control) Peptide Pool is a lyophilised mixture of 26 peptides from Epstein-Barr virus (EBV), and consists of defined HLA class I-restricted T cell epitopes. Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development. For consistency and reproducibility across your applications, CMV peptide pool from STEMCELL has a purity ≥95%.

Supplier: STEMCELL Technologies

Stimulating T cells with HHV1 (gD) Peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. HHV1 (gD) Peptide pool is a lyophilised mixture of 96 peptides from envelope glycoprotein D of human herpesvirus 1 (HHV1; strain Patton), and consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 394 on gD. gD is required at the first stage of virus-induced membrane fusion (Subramanian and Geraghty), which likely occurs via binding to receptors such as nectin-1 (Giovine et al.) and HVEM (Connolly et al.) on cell surfaces. Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.

Supplier: STEMCELL Technologies

Stimulating T cells with EBV (EBNA-3B) peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. EBV (EBNA-3B) Peptide Pool is a lyophilised mixture of 234 peptides from Epstein-Barr nuclear antigen 3B (EBNA-3B) of Epstein-Barr virus (EBV; strain AG876) and consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 946 on EBNA-3B. EBNA-3B is considered non-essential for B cell growth transformation (Chen et al., 2005; Tomkinson and Kieff), but has been shown to regulate the expression of cellular genes in EBV-infected cells (Chen at al., 2006). Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.

Supplier: STEMCELL Technologies

The B18R protein, which is encoded by the B18R open reading frame in the Western Reserve (WR) strain of vaccinia virus, is a type I interferon (IFN)-binding protein that is known to inhibit IFN antiviral response (Colamonici et al.). B18R protein has been shown to exhibit neutralizing activity to type I interferon family members (Meyers et al.) and to protect cells from the antiviral effects of interferon (Vancová et al.). It was recently shown that HIV-1–dependent induction of type I IFN activity and BAFF protein levels was abrogated by the soluble B18R protein, with no effect observed on the cell viability (Gomez et al.). B18R protein has been reported to aid in cellular reprogramming using RNA-mediated gene delivery (Warren et al.; Yoshioka N et al.).

Supplier: STEMCELL Technologies

A member of the pentraxin family of proteins, C-reactive protein (CRP) plays important roles in host defenses, including regulating complement activation in vivo (Sjoberg et al.), decreasing nitric oxide production, and inhibiting angiogenesis in vitro (Verma et al., 2002). At specific concentrations, CRP directly inhibits endothelial progenitor cell (EPC) differentiation, survival, and function, and is thus implicated in the development of cardiovascular diseases (Verma et al., 2004). CRP is primarily synthesized by liver hepatocytes, but also by other immune cells, such as macrophages and lymphocytes (Sproston and Ashworth). The expression of this acute-phase protein is induced by IL-6 and IL-1 secretion of macrophages and T-cells during inflammation. For consistency and reproducibility across your applications, C-reactive protein from STEMCELL comes lyophilised with ≥87% purity, and endotoxin levels are verified to be ≤1,0 EU/μg protein.

Supplier: STEMCELL Technologies

Noggin binds to and antagonizes bone morphogenetic protein (BMP) ligands of the transforming growth factor beta (TGF-β) family. Noggin supports maintenance of undifferentiated human embryonic stem cells cultured in mouse embryonic fibroblast (MEF)-conditioned medium (Chaturvedi et al.), and promotes dopaminergic differentiation of embryonic stem cells and subsequent survival of dopamine neurons (Chiba et al.). Noggin is essential for development of ectodermal structures including neural tube, tooth, hair follicle, and eye, as well as patterning of mesodermal somites and skeletal structures. It also influences chondrogenesis, osteogenesis, and joint formation (Krause et al.).

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Transforming growth factor-alpha (TGF-α) a member of the epidermal growth factor (EGF) family that is expressed in normal epithelial cells, monocytes, macrophages, brain cells, keratinocytes, and cancer cells. TGF-α binds EGF receptor (EGFR) and activates tyrosine kinase signaling. In epidermal and epithelial cells, this results in proliferation and differentiation. TGF-α is not structurally or genetically related to TGF-β, and the two ligands act through different signaling pathways. In vitro, TGF-α was shown to stimulate anchorage-independent growth (Singh and Coffey).

Supplier: STEMCELL Technologies

Interleukin 1 beta (IL-1β) is synthesized as an inactive precursor protein or pro-IL-1β. This precursor is cleaved intracellularly by caspase 1 (IL-1β convertase) to form the active form of the protein that is later secreted (Allan et al.). IL-1β binds to IL-1 receptor and activates intracellular signaling via the MAPK or NF-κB pathway. IL-1β is released by monocytes, tissue macrophages, and dendritic cells in response to infection or injury and induces expression of acute-phase proteins. It also promotes the infiltration of inflammatory and immunocompetent cells from the circulation into the extravascular space and affected tissues, by stimulating the expression of adhesion molecules on endothelial cells. IL-1β also affects other immune cells; for example, it co-stimulates T cell functions together with an antigen or mitogen. It also stimulates Th17 differentiation and B cell proliferation in an IL-6-dependent manner.

Supplier: STEMCELL Technologies

Bone morphogenetic protein 2 (BMP-2) is a member of the transforming growth factor beta (TGF-β) superfamily. BMP-2 is a disulfide-linked homodimer, acts as a ligand for complexes of type I and II BMP receptors, and primarily activates SMAD1/5/8 signaling (Nohe et al.). BMP-2 is a potent differentiation factor and directs human pluripotent stem cells (hPSCs) towards various cell types including extra-embryonic endoderm, mesenchymal cells, and chondrocytes (Pera et al.). Although BMP-2 expression is low in healthy cartilage, its expression is upregulated at the site of cartilage damage (Blaney Davidson et al.). BMP-2 induces bone and cartilage formation in vitro and is able to induce chondrogenesis in human mesenchymal stem cells (Schmitt et al.). This product is animal component-free.

Supplier: STEMCELL Technologies

Interleukin 7 (IL-7) is a member of the type I cytokine family that is critical for T and B cell development and survival. It is produced by non-hematopoietic cells in the thymus, lymphoid organs, and by bone marrow stromal cells (Lundström et al.). IL-7 binds to a receptor composed of common gamma chain and IL-7Ra (CD127) and signals through the JAK/STAT and PI3K pathways. IL-7 regulates the survival of naïve and memory CD4+ and CD8+ T cells, γδ T cells, NK T cells, innate lymphoid cells, and T regulatory cells (Carrette and Surh), and provides signals to promote survival, proliferation, and differentiation during B cell development (Clark et al.; Corfe and Paige).

Supplier: STEMCELL Technologies

Bone morphogenetic protein 2 (BMP-2) is a member of the transforming growth factor beta (TGF-β) superfamily. BMP-2 is a disulfide-linked homodimer, acts as a ligand for complexes of type I and II BMP receptors, and primarily activates SMAD1/5/8 signaling (Nohe et al.). BMP-2 is a potent differentiation factor and directs human pluripotent stem cells (hPSCs) towards various cell types including extra-embryonic endoderm, mesenchymal cells, and chondrocytes (Pera et al.). Although BMP-2 expression is low in healthy cartilage, its expression is upregulated at the site of cartilage damage (Blaney Davidson et al.). BMP-2 induces bone and cartilage formation in vitro and is able to induce chondrogenesis in human mesenchymal stem cells (Schmitt et al.).

Supplier: STEMCELL Technologies

Transforming growth factor (TGF) beta 3 is a member of the TGF-β superfamily and regulates diverse cellular phenotypes. TGF-beta 3 binds to serine-threonine kinase type I and II receptors and activates signal transduction through SMAD2/3 proteins, thus regulating a variety of functions, including cell proliferation, differentiation, wound healing, apoptosis, and metabolism (Massagué; McDowell et al.). TGF-beta 3 enhances glycosaminoglycan production by mesenchymal stromal cells, stimulates scar-free healing, and improves glucose tolerance and phenotypic changes in adipocyte morphology (Hall et al.; Holton et al.). TGF-beta 3 induces proliferation of posterofrontal suture-derived mesenchymal stromal cells, and stimulates expression of fibroblast growth factors 2 and 18 (James et al.). This product is animal component-free.

Supplier: STEMCELL Technologies

R-Spondin-3 is a member of thrombospondin type 1 repeat (TSR-1) superfamily that is involved in the canonical Wnt/β-catenin signaling pathway (de Lau et al.). R-spondin proteins are characterized by two furin-like repeats at the amino terminus and thrombospondin domain located near the carboxyl terminus (de Lau et al.). R-spondin-3 expression is associated with ovarian cancer (Gu et al.), prostate cancer (Mesci et al.), and differentiation of intestinal epithelial cells in diabetes mellitus (Shan et al.). In a transgenic mice model, the expression of R-Spondin-3 induces the expansion of Lgr5+ stem cells, Paneth cells, and Lgr4+ cells, promoting the intestinal stem cell compartment (Hilkens et al.). This protein contains a His-residue tag at the carboxyl end of the polypeptide chain.

Supplier: STEMCELL Technologies

Fibroblast growth factor 8A (FGF-8A) is a member of the fibroblast growth factor (FGF) family and is an isoform of FGF-8. FGF-8A binds the FGF receptor (FGFR) and activates Ras/MAPK signaling (Hulstrand and Houston). The FGF family possesses broad mitogenic and cell survival activities (Folkman and Klagsbrun; Kimelman and Kirschner) and is involved in a variety of biological processes, including cell proliferation, differentiation, survival, and apoptosis (Folkman and Klagsbrun; Klagsbrun; Rifkin and Moscatelli). FGF-8 RNA is spliced to produce 4 protein isoforms in humans: FGF-8A, FGF-8B, FGF-8E, and FGF-8F. The functional differences are not fully understood; however, studies in zebrafish and Xenopus show that FGF-8A is required for endoderm morphogenesis and neurogenesis (Choe and Crump; Hulstrand and Houston).