You searched for: Proteins and Peptides

Supplier: Adipogen

CD273 (B7-DC; PD-L2) is a type I surface molecule with homology to CD80, CD86, CD274. It is expressed primarily by dendritic cells and provides a stimulatory signal to CD279 (PD-1; programmed death molecule) which has an important immunoregulatory role by downregulating the T cell response. CD273 binds to CD279 (PD-1) with a 2-6 fold higher affinity than CD274.

Supplier: Novus Biologicals

Tumor necrosis factor alpha (TNF-alpha), also known as cachectin and TNFSF2, is the prototypic ligand of the TNF superfamily. It is a pleiotropic molecule that plays a central role in inflammation, immune system development, apoptosis, and lipid metabolism.

Supplier: Anaspec

This is histone H3 (1-21) with deimination of Arg2, Arg8, and Arg17 to Citrulline (Cit). Its C-terminal is biotinylated through a GGK linker and blocked by an amide group. Deimination by peptidyl arginine deiminase 4 (PADI4) prevents methylation at these sites and blocks transcriptional activation. Provided at >95% peptide purity, this peptide was dissolved in distilled water at 1 mg/ml and re-lyophilized to powder form.
Sequence:A-Cit-TKQTA-Cit-KSTGGKAP-Cit-KQLA-GGK(Biotin)-NH2
MW:2725.2 Da
% peak area by HPLC:95
Storage condition:-20° C

Supplier: Anaspec

This peptide is based on amino acids 73 to 83 of histone H3. Lysine 79 of Histone H3 (H3K79) has been identified as a residue for acetylation or methylation.Related Peptides: [Lys(Ac)79]-Histone H3 (73-83), H3K79(Ac), Cat# 65438 [Lys(Me3)79]-Histone H3(73-83), H3K79(Me3), Cat# 65439[Lys(biotin)79]-Histone H3 (73-83), H3K79(biotin), Cat# 65440
Sequence:EIAQDFKTDLR
MW:1336.5 Da
% peak area by HPLC:95
Storage condition:-20° C

Supplier: Adipogen

Fluorogenic tri-peptide substrate for measuring the trypsin-like peptidase activity of the 20S proteasome. Substrate for the Kex2 endopeptidase from S. Cervisiae, which has substrate specificity toward the C-terminal side of LR, PR and RR sequences. Can be cleaved by Kallikrein 5 with a P1 site preference for basic residues (R and K). Excitation: 380nm. Emission: 460nm. This substrate is useful for inhibitor screening and kinetic analysis.

Supplier: Anaspec

This hybrid peptide named colivelin was synthesized to potentiate the neuroprotective effect of humanin (HN). Colivelin is composed of Activity-Dependent Neurotrophic Factor (ADNF) C-terminally fused to AGA-(C8R) HNG17, a potent HN derivative. Colivelin completely suppresses cell death induced by overexpressed Familial Alzheimer's disease (FAD)-causative genes and beta-amyloid (1-43). Intraperitoneally administered colivelin suppresses memory impairment and might serve as a novel drug candidate for treatment of Alzheimer's disease.
Sequence:SALLRSIPAPAGASRLLLLTGEIDLP
MW:2645.1 Da
% peak area by HPLC:95
Storage condition:-20° C

Supplier: Adipogen

Fluorogenic substrate for measuring the chymotrypsin-like peptidase activity of the 20S proteasome, calpains and other chymotrypsin-like proteases. Extinction: 380nm. Emission: 460 nm. This substrate is useful for inhibitor screening and kinetic analysis.

Supplier: Anaspec

This peptide is histone H3 (44-63) with acetylation at Lys56. Lys56 acetylation occurs during premeiotic and mitotic S phases and persists through DNA damage repair and is catalyzed by the Rtt109-Vps75 histone acetyltransferase (HAT) complex. A deficiency of acetylated Lys56 in histone H3 is implicated in spontaneous chromosome breaks during mitosis, suggesting that this modification is important for replisome integrity and DNA replication.
Sequence:GTVALREIRRYQ-K(Ac)-STELLIR
MW:2444.9 Da
% peak area by HPLC:95
Storage condition:-20° C

Supplier: BioVendor

Serglycin was found to be among the most abundantly expressed proteins in adipocytes of epicardial adipose tissue in patients with coronary artery disease (CAD). It was demonstrated that TNFα induces expression and secretion of serglycin in adipocytes. Circulating serglycin might also participate in the mechanism of systemic vascular insult and atheromatous change. Serglycin is a dominant intracellular proteoglycan expressed by immune cells, where it interacts with numerous inflammatory mediators, such as proteases, chemokines, cytokines, and growth factors. Serglycin is implicated in their storage into the granules and their protection since they are secreted as complexes and delivered to their targets after secretion.

Supplier: Anaspec

Aggrecanases belong to the ADAMTS (A disintegrin and metalloprotease with thrombospondin motif) family of proteases. Aggrecanases cleave aggrecan, the major structural component of cartilage. Aggrecanase-1 (ADAMTS-4) is a major aggrecanase in human osteoarthritic cartilage.
This FRET peptide was used in an ADAMTS-4 (Aggrecanase-1) assay. Ex/Em = 340/420 nm.
Sequence:Abz-TEGEARGSVI-Dap(Dnp)-KK-NH2
MW:1644.8 Da
% peak area by HPLC:95
Storage condition:-20° C

Supplier: Adipogen

Irisin is a recently described exercise and PGC1-alpha-induced myokine secreted by skeletal muscle in mice and humans. Irisin has been shown to induce browning of white adipose tissue, but this role has been questioned and a new function in the control of mass and strength of cortical bone has been reported. The membrane fibronectin type III domain containing protein 5 (FNDC5) can be cleaved by an unknown protease to release the Irisin protein (aa 32-143 for human) and potentially also the FNDC5 (extracellular domain, aa 32-153 for human).

Supplier: BioVendor

Total 840 AA, UniProt P22413 (Lys98-Asp925). MW: 96.5 kDa (calculated), migrates at ~110 kDa on SDS PAGE; N-terminal linker (2 extra AA), C-terminal linker (4 extra AA) and C-terminal His-tag (6 extra AA). Protein identity confirmed by LC-MS/MS.

Supplier: Advanced Biomatrix

PhotoCol®-RUT is a methacrylated Type I collagen kit. These 3D collagen gels can be prepared at various concentrations and photocrosslinked (400-450nm) to provide various gel stiffness. Each kit contains 100mg of methacrylated collagen, ruthenium photoinitiator, acetic acid and a neutralization solution.

Supplier: Adipogen

Dectin-1 and dectin-2 are type II transmembrane proteins of the C-type lectin family. They contain single carbohydrate recognition domains (CRDs) in their extracellular region. Dectin-1 and dectin-2 are expressed in macrophages and dendritic cells. Dectin-1 recognizes beta-glucans with its CRD and signals through its immunoreceptor tyrosine-based activation motif (ITAM)-like motif in the cytoplasmic domain, whereas dectin-2 recognizes alpha-mannans and transduces its signal through association with the ITAM-containing Fc receptor gamma-chain.

Supplier: Anaspec

Hoe 140 is a stable B2 bradykinin antagonist. Based on its high potency and good tolerability, Hoe 140 is used to evaluate the role of bradykinin in human diseases.
Sequence:rRP-(Hyp)-G-(Thi)-S-(D-Tic)-(Oic)-R
MW:1304.5 Da
%Peak area by HPLC:≥95%
Storage condition: -20°C

Supplier: Anaspec

All the HCl salt forms of Aß (1-40), Aß (25-35) and D-Ser26 Aß (25-35), take the ß-structure within a few hours in PBS. They form fibrils, exert toxic effects on hippocampal cultured neurons and suppress MTT reduction activity of non-neuronal (HeLa) cells without cytotoxicity.
Sequence: GSNKGAIIGLM - HCl
Molecular Weight: 1060.3+36.5 Da
% Peak Area by HPLC: ≥95
Peptide Content: ≥ 60%
Storage condition: -20°C

Supplier: Advanced Biomatrix

PhotoGel®-LAP is a methacrylated gelatin kit. These 3D gelatin hydrogels can be prepared at various concentrations and photocrosslinked (405nm) to provide various gel stiffness. Each kit contains 1 gram (2 x 500 mg) of methacrylated gelatin and LAP photoinitiator.

Supplier: Anaspec

Oxytocin (OT) is a 9-amino acid peptide that is synthesized primarily in the hypothalamic neurons, specifically the magnocellular oxytocin neurons in the supraoptic and paraventricular nuclei and is secreted by the posterior pituitary gland. It is also secreted from other tissues, such as the ovaries and testes. Circulating OT is important during parturition and lactation. In the pregnant uterus, oxytocin and the oxytocin receptor play a major part for uterine contractility and the induction of labor. OT is also involved in complex social behaviors such as affiliation, sexual behavior, social recognition, stress buffering, aggression, and trust.
Sequence: CYIQNCPLG-NH2 (Disulfide bridge: 1-6)
MW: 1007.2 Da
% Peak area by HPLC: 95
Storage condition: -20° C

Supplier: Anaspec

The octapeptide angiotensin II (Ang II) exerts a wide range of effects on the cardiovascular system. It is also implicated in the regulation of cell proliferation, fibrosis and apoptosis. Ang II is formed through cleavage of Ang I by the angiotensin-conve
Sequence: DRVY-I*-HPF [I*= I(U13C6,15N)]
MW: 1053.2 Da
% Peak area by HPLC: 95
Storage condition: -20°C

Supplier: Anaspec

This is a dimethylated lysine at position 4 of the 1-21 amino acid histone H3 peptide. This form of histone methylation is characterized as being enriched around transcription start sites (TSS). It has been observed that a subgroup of genes linked to T cell functions showed high levels of H3K4me2 within their gene body. While enrichment for H3K4me2 within the gene body is a characteristic trait of expressed genes in yeast, in contrast, H3K4me2 has been shown to be predominantly enriched around the TSS in mammals.
Sequence:ART-K(Me2)-QTARKSTGGKAPRKQLA
MW:2282.6 Da
% peak area by HPLC:95
Storage condition:-20° C

Supplier: BioVendor

Placental protein 13 (PP13, Galectin 13) is the member of the beta-galactoside binding S-type galectin superfamily, whose members are important in placenta implantation and remodelling of maternal arteries. PP13 binds to beta-galactoside residues of several proteins on the cell surface, cytoskeleton and extracellular matrix, thereby generating various responses such as immune responses and influencing other functions like apoptosis and molecular recognition. PP13, which is predominantly produced by placental tissue, possesses a conserved carbohydrate binding domain, to which two proteins Annexin-II and Actin-beta bind. These proteins are considered to play a key role in placentation and maternal artery remodelling respectively.

Supplier: Adipogen

The adipocytokine resistin which belongs to a family of cysteine-rich C-terminal proteins known as resistin-like molecules (RELM; RELM-alpha/FIZZ 1 and RELM-beta/FIZZ 2) of FIZZ (found in inflammatory zone) are thought to be involved in inflammatory processes. Previous studies in mice showed that resistin impairs glucose tolerance and insulin action. In addition, resistin also inhibits adipogenesis in murine 3T3-L1 cells. Therefore resistin has also been proposed as an adipocyte-secreted factor thought to link obesity and T2DM.

Supplier: Anaspec

This amino acids 11 to 22 fragment of b-amyloid is capable of forming well-organized amyloid fibrils in vitro, similar to the pathogenic ones found in amyloidosis. Analysis of the structural properties of one monomer of b-amyloid (11-22) as well as of the aggregation mechanisms for four chains of b-amyloid (11-22) showed that the system assembles rapidly into a random globular state that evolves into three- and four-stranded antiparallel beta-sheets. The aggregation process is considerably accelerated by the presence of preformed dimers.
Sequence: EVHHQKLVFFAEDVG
Molecular Weight: 1755 Da
% Peak Area by HPLC: ≥95
Peptide Content: ≥ 60%
Storage condition: -20°C

Supplier: Anaspec

Myelin Oligodendrocyte Glycoprotein (MOG) is a member of the immunoglobulin superfamily and is expressed exclusively in the central nervous system (CNS). Although MOG protein constitutes only 0.01-0.05% of the CNS myelin proteins, it was demonstrated that MOG protein is a crucial autoantigen for multiple sclerosis in humans and experimental autoimmune encephalomyelitis (EAE) in rodents and monkeys

The sequence (Accession # NP_034944) corresponding to the extracellular domain of mouse MOG along with a 6x His tag was expressed in E. coli. The recombinant mouse MOG (M-rMOG) was purified from urea denatured bacterial lysate using immobilized metal affinity chromatography (IMAC). The molecular mass of the recombinant mouse MOG is 14.2 kDa

Supplier: Adipogen

Collagen triple helix repeat containing-1 (CTHRC1) is a 30kDa glycosylated secretory protein containing a short collagen-like motif contributing to vascular remodeling by limiting collagen matrix deposition and promoting cell migration. CTHRC1 is expressed in calcified atherosclerotic plaque and chondrocyte-like cells, in the hypothalamus, pituitary gland and remodeling tissues. Aberrant expression of CTHRC1 is present in human solid cancers and likely to be associated with cancer invasion and metastasis. With adiponectin and other members of the C1q/TNF-related protein (CTRP) family, CTHRC1 shares the presence of a short N-terminal collagen domain but it lacks the characteristic C1q domain that defines the CTRP family of proteins. A recent study identifies CTHRC1 as a novel circulating hormone with metabolic effects.

Supplier: BioVendor

Trefoil factor 1 (TFF1, pS2) is a small secreted protein with molecular weight of 6.5 kDa (monomers, 14 kDa – dimers). It belongs to the TFF protein family that is characterized by a clover leaf–like disulphide structure named the TFF domain, which is created by 6 cysteines forming three intramolecular bonds. TFF1 contains one trefoil domain, but has a seventh cysteine in position 57 that is essential for formation of dimers. TFF1 exist as both monomers and dimers (homo- and heterodimers – with gastrokine 2). The most abundant expression of TFF1 is found in the GI tract (especially in stomach, colon and pancreas) where it is co-localised with mucins, usually with MUC5AC.

Supplier: Anaspec

Parathyroid hormone (PTH) regulates the metabolism of calcium and phosphate. PTH and PTH-related polypeptide (PTHrP) play important roles in calcium homeostasis of bone, kidney, breast, and placenta; they signal via the PTH/PTHrP and PTH2 receptors. PTH(1–34) administration suppresses cardiovascular calcification and down-regulates aortic osteogenic programs driven by diabetes and dyslipidemia.
Sequence: Biotin-SVSEIQLMHNLGKHLNSMERVEWLRKKLQDVHNF
MW: 4344.1 Da
% Peak area by HPLC: 95
Storage condition: -20° C

Supplier: Adipogen

BAFF is a master regulator of peripheral B cell survival, and together with IL-6, promotes Ig class-switching and plasma cell differentiation. BAFF co-stimulates activated T cells. Increased levels of soluble BAFF have been detected in the serum of patients with various autoimmune diseases, such as Sjögren’s syndrome, rheumatoid arthritis, multiple sclerosis and systemic lupus erythematosus (SLE). Furthermore, BAFF is found in inflammatory sites in which there is lymphoid neogenesis. BAFF levels are elevated in patients with multiple myeloma and B cell chronic lymphoid leukemia (B-CCL).

Supplier: Adipogen

CD279 (Programmed Cell Death Protein 1; PD-1) is a type I transmembrane protein belonging to the CD28/CTLA-4 family of immunoreceptors that mediate signals for regulating immune responses. Members of the CD28/CTLA-4 family have been shown to either promote T cell activation (CD28 and ICOS) or downregulate T cell activation (CTLA-4 and PD-1). CD279 is expressed on activated T cells, B cells, myeloid cells and on a subset of thymocytes. In vitro, ligation of CD279 inhibits TCR-mediated T cell proliferation and production of IL-1, IL-4, IL-10 and IFN-gamma. In addition, CD279 ligation also inhibits BCR mediated signaling. CD279 deficient mice have a defect in peripheral tolerance and spontaneously develop autoimmune diseases.

Supplier: Stemcell Technologies

Tumor necrosis factor-beta (TNF-β), also known as lymphotoxin-alpha, is a member of the TNF family. It is a pro-inflammatory cytokine that activates NF-kB, MAPK, and PI3K/AKT pathways upon binding to TNF receptors 1 and 2. It is produced mainly by T cells, though other cells can express TNF-β at lower levels (Chu). TNF-β is involved in autoimmune disorders, lymph node development, and mediating the inflammatory demyelination process (Seleznik et al.; McCarthy et al.).