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Protéines et Peptides
Numéro de catalogue:
(STMC100-1396)
Fournisseur:
STEMCELL Technologies
Description:
Stimulating T cells with the HPV18 (L1) Peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. A lyophilised mixture of 140 peptides from major capsid protein L1 of human papillomavirus type 18 (HPV18), HPV18 (L1) Peptide pool consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 568 on L1. L1 enters the nuclei of host cells and can assemble into virus-like particles (Stauffer <i>et al.</i>). Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.
UOM:
1 * 1 PE
New Product
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Numéro de catalogue:
(STMC100-1295)
Fournisseur:
STEMCELL Technologies
Description:
Lipocalin-2 (LCN2) is a member of the lipocalin superfamily, which share a highly conserved fold containing an eight-stranded antiparallel beta barrel (Flower), and transport small hydrophobic molecules. Playing a role in innate immunity, Lipocalin-2 acts as a potent bacteriostatic reagent by sequestering iron-containing siderophores (Flo <i>et al.</i>). It is mainly expressed in activated neutrophils, but is also secreted by other immune cells in response to infection. Lipocalin-2 has been implicated in multiple cellular processes, such as differentiation (Yang <i>et al.</i>), migration (Du <i>et al.</i>), and apoptosis (Devireddy <i>et al.</i>). <i>In vitro</i> studies suggest that lipocalin-2 is a potential therapeutic target for certain cancers, including colorectal cancer (CRC; Zhang <i>et al.</i>) and chronic lymphocytic leukemia (Bauvois <i>et al.</i>). This protein product contains a His-residue tag at the carboxyl end of the polypeptide chain. For consistency and reproducibility across your applications, lipocalin-2 from STEMCELL comes lyophilised with ≥94% purity, and endotoxin levels are verified to be ≤1.0 EU/μg protein.
UOM:
1 * 1 EA
New Product
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Numéro de catalogue:
(STMC100-1393)
Fournisseur:
STEMCELL Technologies
Description:
Stimulating T cells with HPV16 (L2) peptide pool releases downstream cytokines and upregulates activation markers, enabling antigen-specific T cells to be detected or isolated for analysis. A lyophilised mixture of 116 peptides from minor capsid protein L2 of human papillomavirus type 16 (HPV16), HPV16 (L2) Peptide Pool consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 473 on L2. L2 is equipped with multiple nuclear retention signals (Darshan <i>et al.</i>; Mamoor <i>et al.</i>), and enters the nuclei of host cells via several import pathways mediated by Kapα2β1 heterodimers, Kapβ2, and Kapβ3 (Darshan <i>et al.</i>). Viral peptide pools are useful for a broad range of applications, including vaccine development, immunological research, and diagnostic assay development.
UOM:
1 * 1 PE
New Product
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Numéro de catalogue:
(STMC100-1297)
Fournisseur:
STEMCELL Technologies
Description:
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 <i>et al.</i>), decreasing nitric oxide production, and inhibiting angiogenesis in vitro (Verma <i>et al.</i>, 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 <i>et al.</i>, 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.
UOM:
1 * 1 EA
New Product
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Fournisseur:
STEMCELL Technologies
Description:
Granulocyte colony-stimulating factor (G-CSF) is a member of the CSF family of glycoproteins that regulate hematopoietic cell proliferation, differentiation, and function. It is a key cytokine involved in the production of neutrophils and the stimulation of granulocyte colony formation from hematopoietic progenitor cells (Metcalf andamp; Nicola). G-CSF causes a range of effects including a transient reduction of SDF-1 expression (Petit <i>et al.</i>), the activation of metalloproteases that cleave VCAM-1 (Levesque <i>et al.</i>), and the release of norepinephrine from the sympathetic nervous system (Katayama <i>et al.</i>), leading to the release or mobilisation of hematopoietic stem cells from the bone marrow into the periphery. The G-CSF receptor is expressed on a variety of hematopoietic cells, including myeloid-committed progenitor cells, neutrophils, granulocytes, and monocytes. In addition to hematopoietic cells, G-CSF is also expressed in cardiomyocytes, neuronal cells, mesothelial cells, and endothelial cells. Binding of G-CSF to its receptor leads to activation of the JAK/STAT, MAPK, PI3K, and AKT signal transduction pathways.
Numéro de catalogue:
(ACRBBAF-M521Y-50UG)
Fournisseur:
ACROBIOSYSTEMS
Description:
Mouse recombinant BAFF (from HEK293)
UOM:
1 * 50 µG
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Fournisseur:
ACROBIOSYSTEMS
Description:
Mouse recombinant BAFFR (from HEK293)
Numéro de catalogue:
(STMC100-0670)
Fournisseur:
STEMCELL Technologies
Description:
The EBV (BZLF1) peptide pool is a lyophilised mixture of 59 peptides from trans-activator protein BZLF1 of Epstein-Barr virus (EBV; strain B95-8). BZLF1 is a DNA-binding protein that acts as a switch from latent infection to lytic infection. The pool consists of 15-mer peptides with 11-amino-acid overlaps that cover amino acids 1 to 245 on BZLF1.
UOM:
1 * 1 Kit
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Fournisseur:
STEMCELL Technologies
Description:
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 <i>et al.</i>), and promotes dopaminergic differentiation of embryonic stem cells and subsequent survival of dopamine neurons (Chiba <i>et al.</i>). 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 <i>et al.</i>).
Fournisseur:
STEMCELL Technologies
Description:
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 <i>et al.</i>). 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 <i>et al.</i>; Corfe and Paige).
Fournisseur:
STEMCELL Technologies
Description:
Interleukin 12 (IL-12p70) is a heterodimeric cytokine composed of p35 and p40 subunits. IL-12 is produced by monocytes, macrophages, dendritic cells, neutrophils and B cells in response to bacterial products and cytokines such as IFN-γ. The IL-12 receptor is expressed on T, NK, and dendritic cells. Upon binding, IL-12 initiates signaling via the JAK/STAT signaling pathway and stimulates NK, B, and T cells to produce IFN-γ (Watford <i>et al.</i>). It also regulates cytokine synthesis, proliferation of T and NK cells, and stimulates differentiation of CD4+ and CD8+ T cells (Germann and Rüde). Mice that are deficient in IL-12 are susceptible to many intracellular pathogens and have impaired IFN-γ secretion, Th1 differentiation and NK cytolytic activity; however, Th2 development and IL-4 production are enhanced (Watford <i>et al.</i>).
Fournisseur:
STEMCELL Technologies
Description:
Human Interleukin 4 (IL-4) is important for immune responses to helminth infection as well as in allergic responses (Olpihant <i>et al.</i>). The IL-4 receptor consists of a heterodimer of IL-4Ra and common gamma chain. IL-4 receptor engagement leads to the activation of JAK1/3 and the recruitment of STAT6 and IRS1/2 (Nelms <i>et al.</i>). IL-4 drives immunoglobulin class switching in B cells (to IgE, IgG4), mast cell hyperplasia, mucus production, and the differentiation of naïve T cells into Th2 cells, which produce IL-4, IL-5, IL-10, and IL-13 (Bao <i>et al.</i>; Nelms <i>et al.</i>; Olpihant <i>et al.</i>). In addition to Th2 cells, IL-4 is produced by CD4+ NK T cells, γ/δ T cells, activated basophils, eosinophils, and mast cells. Human IL-4 does not cross-react with mouse cells (Park <i>et al.</i>).
Fournisseur:
STEMCELL Technologies
Description:
Vascular endothelial growth factor (VEGF) is a heparin-binding homodimeric glycoprotein involved in vasculogenesis and angiogenesis. VEGF binds to FLT1 (VEGFR-1) and KDR (VEGFR-2), and activates Raf/MEK/ERK and PI3K/AKT pathways (Ferrara <i>et al.</i>). VEGF exists in multiple isoforms that result from alternative splicing of VEGF mRNA in the terminal exon. Proximal splice-site selection in exon 8 results in pro-angiogenic VEGFxxx isoforms (xxx is the number of amino acids), whereas distal splice-site selection results in anti-angiogenic VEGFxxxb isoforms (Nowak <i>et al.</i>). VEGF plays an important role in neurogenesis both in vitro and in vivo (Storkebaum <i>et al.</i>). It has neurotrophic effects on neurons of the central nervous system, and it promotes growth and survival of dopaminergic neurons and astrocytes. VEGF also promotes growth and survival of vascular endothelial cells, monocyte chemotaxis, and colony formation by granulocyte-macrophage progenitor cells (Ferrara <i>et al.</i>). Various splice variants of VEGF exist, with different functions. For example, it has been shown that VEGF isoform VEGF-164(165) and not VEGF-120(121) induces inflammation, stimulates intracellular adhesion molecule (ICAM)-1 expression on endothelial cells, and induces chemotaxis of monocytes (Usui <i>et al.</i>).
Fournisseur:
ACROBIOSYSTEMS
Description:
Rabbit Serum Albumin protein, His Tag.
Fournisseur:
Serva
Description:
Bovine serum albumin (BSA), Fraction V
Fournisseur:
Roth Carl
Description:
Soy bean trypsin inhibitor
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