protein p

Bovine Peripheral Myelin Protein P2 (53-78) is a derivative composed of amino acid residues 53 to 78 from the peripheral myelin P2 protein of bovine origin. It acts as a T cell epitope and is used to induce experimental autoimmune neuritis (EAN) in Lewis rats.

HIV-1 gag Protein p24 (194-210) is a polypeptide molecule with the sequence ANPDCKTILKALGPAAT.

Peripheral Myelin P0 Protein (180-199) [mouse] is a purified component of myelin found in peripheral nerves, serving as a neuritogenic peptide that initiates neuronal process growth.

Tumor protein p53 binding protein (53BP1) has been identified in a yeast two-hybrid screen as a protein that interacts with the central DNA–binding domain of p532. Similar to breast cancer susceptibility gene 13, 4 (BRCA1; 53BP1 enhances p53-dependent tra

Beta-Amyloid Protein Precursor 770 (135-155)Aβ Protein Precursor 770 (135-155)

Vitamin D-binding protein is a multifunctional, highly expressed, polymorphic serum protein. These range from the transport of vitamin D metabolites to possible roles in the immune system and host defense. The molecular weight range, the time course of ap

Human vitamin D-binding protein (hDBP) is an abundant, multifunctional, and highly polymorphic serum glycoprotein synthesized by the liver1.

β-Amyloid/A4 Protein Precursor (319-335) (APP (319-335)) is a polypeptide fragment derived from the β-Amyloid/A4 Protein Precursor (APP). It is capable of identifying an APP-related, heparinase-resistant site that promotes neurocellular activity.

MOG (35-55) mouse, rat is a minor component of the central nervous system myelin with high brain specificity and strong immunogenicity. It can induce T and B cell responses, trigger relapsing-remitting neurological disorders with plaque-like demyelination, and is commonly used for inducing experimental autoimmune encephalomyelitis (EAE) models.

MOG peptide (35-55), mouse, rat acetate, is a minor component of central nervous system myelin with encephalitogenic activity. It can induce CD4⁺ T cell proliferation and Th1-type immune responses, leading to relapsing-remitting demyelinating disease. It is commonly used to establish experimental autoimmune encephalomyelitis (EAE) models.

Myelin oligodendrocyte glycoprotein (MOG) peptide, a truncated form of MOG located on the extracellular myelin sheath surface, interacts with antigen serotype HLA-DR2 to mitigate effects of ischemic stroke induced by middle cerebral artery occlusion (MCAO) in mice. In female mice, it notably reduces cortical and striatal infarct volumes, lessens sensorimotor deficits as observed in tube- and corner turn tests, enhances engagement with novel odors, and prolongs the duration of cage mate-directed vocalizations, without exhibiting similar outcomes in male mice.

MOG (35-55) TFA is a minor component of central nervous system myelin with encephalitogenic activity. It can induce T cell proliferation, activate Th1 cytokine responses, and elicit high levels of IgG antibodies, leading to relapsing-remitting central nervous system disease characterized by extensive plaque-like demyelination. It is commonly used to induce experimental autoimmune encephalomyelitis (EAE) models.

P-113 acetate is an antimicrobial peptide (AMP) derived from the human salivary protein histatin 5, shows good safety and efficacy profiles in gingivitis and human immunodeficiency virus (HIV) patients with oral candidiasis.

Defensin HNP-3 is a peptide secreted by human polymorphonuclear leukocytes (PMNs) that has antimicrobial properties. It induces lysis of mammalian cells when used at a concentration of 25 μg/mL. It also inhibits growth of E. faecalis (ED50 = 100 nM) and clinical isolates of P. aeruginosa (MIC90 = 4 μM). HNP-3 binds to recombinant HIV-1 envelope glycoprotein (gp120) and human CD4 (Kds = 52.8 and 34.9 nM, respectively). It also binds to recombinant, immobilized human surfactant protein D (SP-D; Kd = 55.7 nM) and inhibits focus formation in Madin-Darby canine kidney (MDCK) cells infected with influenza A virus (IAV).

The leguminous shrub,Leucaena leucocephala(Leucaena) is wide‐spread in tropical and subtropical agricultural systems and provides a ready source of protein for livestock. However, the presence of mimosine, a non‐protein, amino acid comprising about 12% of the dry matter in growing tips ofLeucaena, is toxic to animals. Mimosine is degraded rapidly in the rumen to produce 3,4‐dihydroxypyridine (3,4‐DHP) and 2,3‐dihydroxypyridine (2,3‐DHP), both of which remain toxic to animals[1]. 3,4-DHP, as a derivative of the plant amino acid mimosine, is goitrogenic in cattle, sheep, and mice. In contrast to established antithyroid compounds, such as methimazole (MMI) and propylthiouracil (PTU), 3,4-DHP has no SH-group. 3,4-DHP with various concentrations inhibited incorporation of125I into protein in human thyroid slices. It also suppressed the activation of lymphocytes by PHA (phytohaemagglutinin) and PWM (pokeweed mitogen). Suppression with 3,4-DHP was seen at 100 and 1000 μmol/L (P< 0.001 vs both PHA and PWM). Those, together with a very low murine bone marrow toxicity, probably related to the absence of an SH-group, make 3,4-DHP a potential antithyroid drug[2].

Murepavadin TFA is a highly potent 14–amino acid cyclic peptide antibiotic that exhibits strong and specific antibacterial activity against Pseudomonas aeruginosa, with MIC50 and MIC90 values both measured at 0.12 mg/L, functioning through targeted interaction with the lipopolysaccharide transport protein D, and serving as a valuable research compound for studying bacterial resistance mechanisms, antimicrobial specificity, and novel antibiotic development strategies.

[D-Pro4,D-Trp7,9,Nle11] Substance P (4-11) is a potent neurokinin NK1 antagonist that effectively inhibits the actions of gold-protein-substance P (GPSP) and substance P (SP), demonstrating its efficacy in neutralizing their effects [1].

Azurin (50-77) is a peptide fragment derived from the copper-containing bacterial protein azurin, present in P. aeruginosa. It exhibits properties that regulate the cell cycle, inhibit cancer proliferation, and manage angiogenesis, proving its potential as an anticancer agent. Specifically, this compound acts as a VEGFR2 inhibitor with an IC20 of approximately 10.7 µM. At a concentration of 20 µM, it effectively induces cell cycle arrest at the G2/M phase in MCF-7 breast cancer cells, while a higher concentration of 50 µM significantly reduces the proliferation of both MCF-7 and ZR-75-1 breast cancer cell lines. Furthermore, Azurin (50-77) impedes VEGF-A-induced capillary tube formation with an IC50 of 12 µM, and alters the cellular and extracellular levels of critical signaling and structural proteins such as F-actin, focal adhesion kinase (FAK), paxillin, and platelet endothelial cell adhesion molecule-1 (PECAM-1) in human umbilical vein endothelial cells (HUVECs) at a concentration of 25 µM. Demonstrating its efficacy in vivo, Azurin (50-77) administered at 10 mg/kg per day notably reduces tumor volume in an MCF-7 mouse xenograft model, highlighting its therapeutic potential.

BING, a antimicrobial peptide discovered in Japanese medaka fish (O. laptipes), originates from vacuolar protein sorting-associated protein 13D-like (Vps13D). It exhibits efficacy against a range of Gram-negative and Gram-positive bacteria, notably including methicillin-resistant S. aureus (MRSA; MICs = 4-64 µg/ml). Furthermore, BING enhances the effectiveness of antibiotics such as ampicillin, amoxicillin, and novobiocin against P. aeruginosa, and it prevents resistance development to kanamycin and ampicillin in E. coli. Notably, its administration in vivo significantly improves survival rates in O. laptipes challenged with E. tarda.

Surfactant protein A (SP-A) (196-215) is a synthetic peptide derived from the C-terminal carbohydrate recognition domain of human SP-A, specifically amino acids 196-215. This peptide suppresses LPS-induced TNF-α release in JAWSII mouse dendritic cells at 1 and 10 µM concentrations and promotes phagocytosis of P. aeruginosa at a 75 µM concentration. Furthermore, intratracheal administration of SP-A (196-215) at a dose of 50 µg per animal reduces disease severity and lung colony-forming units in mice infected with P. aeruginosa.

Protein Kinase C (19-31) TFA, a peptide inhibitor of protein kinase C (PKC), derived from the pseudo-substrate regulatory domain of PKCa (residues 19-31) with a serine at position 25 replacing the wild-type alanine, is used as protein kinase C substrate p

ATI-2341 is an effective functionally selective allosteric agonist for the c-x-c chemokine receptor type 4 (CXCR4), which ACTS as a biased ligand in favor of G G G G G 1 activation instead of G G G G G 13.ATI-2341 activates the inhibitory heterotrimer G p

G-Protein antagonist peptide acetate is a truncated substance P-related peptide, competes with receptor for G protein binding. G-Protein antagonist peptide acetate inhibits the activation of Gi or Go by M2 muscarinic cholinergic receptor (M2 mAChR) or of Gs by beta-adrenergic receptor in the reconstituted phospholipid vesicles, assayed by receptor-promoted GTP hydrolysis

QWF acetate is a Substance P antagonist that specifically inhibits the binding of Substance P to its receptor (NK1) with an IC50 of 0.09 Μm; it can also inhibit the activation of Mas-related G-protein-coupled receptor X2 (MRGPRX2), which inhibits degranulation of mast cells.QWF acetate is used as a polypeptide in pain, inflammation and allergic reactions, QWF acetate has important applications as a peptide in the study of pain, inflammation and allergic reactions.