helix

Thioether-cyclized helix B peptide (CHBP) enhances metabolic stability and exerts renoprotective effects by promoting autophagy through the inhibition of mTOR C1 and activation of mTOR C2 [1].

PTBP1α3-helix derived peptide P1 is a polypeptide that inhibits RNA binding [1].

Phe-Met-Arg-Phe-like peptide, derived from the visceral and somatic muscles of the snail Helix aspersa, is a neuropeptide known as FMRF (Phe-Met-Arg-Phe). This peptide comprises four amino acid residues[1].

Thioether-cyclized helix B peptide, CHBP (TFA), is the trifluoroacetic (TFA) salt of CHBP, enhancing metabolic stability and exhibiting renoprotective effects by promoting autophagy through inhibition of mTOR C1 and activation of mTOR C2 [1].

C-MYC PEPTIDE EPITOPE TFA, the product of the c-myc proto-oncogene, is a helix-loop-helix leucine zipper phosphoprotein that regulates gene transcription in cell proliferation, cell differentiation and apoptosis. This peptide is a human c-myc epitope.

Phe-Met-Arg-Phe Like Peptide acetate (Pqdpflrfamide acetate) is a FMRF-like peptide from visceral and somatic muscles of the snail Helix aspersa. FMRF (Phe-Met-Arg-Phe) is a neuropeptide peptide consisting of 4 amino acid residues.

The a-helix of the amphipathic peptide antibiotic LAH4 (KKALLALALHHLAHLALHLALALKKA-NH2) strongly interacts with phospholipid membranes, demonstrating in vitro transfection efficiencies comparable to those of commercially available reagents.

Type II collagen is composed of a triple helix of three identical α chains. These molecules associate to form a fibril that is stabilized by intermolecular crosslinks1. Damage to the fibrillar meshwork, made up of primarily type II collagen (z 90–95%), ma

S1H, a synthetic peptide mimetic of human growth hormone amino acids 36-51, acts as an antagonist to the growth hormone receptor. It forms an α-helical structure in solution and inhibits STAT5 phosphorylation triggered by human growth hormone in SK-MEL-28 and MALME-3M melanoma cell lines, as well as prolactin in IM-9 B cell lymphocytes, at concentrations of 100 and 200 nM.

β-CGRP, human ,a 37-amino acid peptide,is the beta form of Calcitonin-gene-related peptide (β-CGRP), involved extensively in regulation of the cardiovascular and nervous systems. β-CGRP contains a disulphide bridge at the N-terminus, a C-terminal phenylal

LAH4 TFA, an alpha-helix of the designed amphipathic peptide antibiotic, exhibits potent antimicrobial, nucleic acid transfection, and cell penetration capabilities, along with high plasmid DNA delivery capacities, and shows a strong affinity for anionic lipids in bacterial outer membranes [1] [2] [3].

QEQLERALNSS TFA, a helix B surface peptide (HBSP) derived from erythropoietin, exhibits tissue protective activities. It notably safeguards cardiomyocytes against apoptosis [1].

Peptide 399 is an antimicrobial peptide with an idealized amphiphilic alpha helix.

BLP-3, an endogenous peptide derived from X. laevis skin, exhibits antibacterial efficacy against N. meningitidis, N. gonorrhoeae, N. lactamica, and N. cinerea at a concentration of 20 µg/ml. Characterized by its ability to fold into an alpha-helix, BLP-3 penetrates and disrupts bacteriomimetic membranes, underlying its mechanism of action.

st-Ht31, a cell-permeable stearated peptide derived from the amphipathic helix domain of A-kinase anchoring proteins (AKAPs), effectively binds protein kinase A (PKA), impacting PKA's cellular interactions without altering its activity. Specifically, at a 50 µM concentration, it reduces PKA's membrane anchoring in BHK-21 fibroblast reporter assays. Moreover, st-Ht31 at concentrations of 1 and 3 µM decreases both capacitance and hyperactivation in mouse sperm, thereby inhibiting in vitro fertilization. Additionally, at 50 µM, this compound facilitates cholesterol export in BHK-21 cells and RAW 264.7 macrophages expressing ATP-binding cassette transporter 1 (ABCA1), showcasing its multifaceted cellular impacts.

NTR 368 TFA, a peptide derived from the p75 neurotrophin receptor (p75NTR) and corresponding to residues 368-381 of the human receptor, exhibits a helix-forming propensity in the presence of micellar lipid. It is a potent inducer of neural apoptosis [1].

N36Mut(e,g) is an HIV fusion peptide inhibitor targeting gp41. It functions by disrupting the formation of the homotrimeric coiled coil of the N-terminal helix in the pre-hairpin intermediate, leading to the creation of a heterotrimer.

This amino acids187 to 203 fragment is derived from the C-terminal helix of synaptosomal-associated protein of 25 kDa (SNAP-25). This peptide is able to rescue exocytosis from botulinum neurotoxin E (BoNT/E)-treated cells, albeit at higher concentrations

GVLSNVIGYLKKLGTGALNAVLKQ (PGQ) is a 24-amino acid antimicrobial peptide capable of forming an α-helix structure. It exhibits activity against both Gram-negative and Gram-positive bacteria, as well as the yeast Candida albicans [1].

PTBP1-RNA-binding inhibitor P6 TFA (PTBP1 α3-helix derived peptide P6 TFA) is a specific stapled peptide inhibitor of the splicing factor PTBP1, which is used to inhibit RNA alternative splicing events regulated by PTBP1. PTBP1-RNA-binding inhibitor P6 TFA exerts its effects by binding to the RNA recognition motif of PTBP1.

C34 peptide, also referred to as HR2, is a biologically active peptide integral to the helical region of HIV's gp41 and is specifically the C-terminal heptad repeat 2 (HR2), denoted as the C helix or C peptide. It functions as a potent inhibitor of HIV-1 fusion, thereby impeding the virus's entry into cells via membrane fusion.