gly-phe-arg

Gly-Phe-Arg is a highly potent synthetic tripeptide that mimics the pumping pheromone of the mud-crab.

Gly-Phe-Arg acetate is a superpotent synthetic tripeptide mimics of the mud-crab pumping pheromone.

Arg-Gly-Asp-D-Phe-Val (TFA) has anti-tumor activity and is an inhibitor of integrin αvβ3.

Cyclo(Arg-Gly-Asp-D-Phe-Val) is an integrin αvβ3 inhibitor with antitumor properties, used in acute myeloid leukemia research [1].

Cys-Arg-Gly-Asp-Phe-Pro-Ala-Ser-Ser-Cys (Disulfide bridge: Cys1-Cys10), a decapeptide with a cyclic RGD active sequence, functions as an Integrin αIIbβ3 antagonist, effectively inhibiting platelet adhesion and proMMP-13 adhesion [1].

Cyclo(Phe-Ala-Gly-Arg-Arg-Arg-Gly-AEEAc) is a potential nonhormonal male contraceptive that functions through the inhibition of GRTH DDX25 phosphorylation.

P-113 is a peptide with antimicrobial activity.

Pro-Adrenomedullin(153-185),human, (C143H224N42O43), a peptide with the sequence H2N-SLPEAGPGRTLVSSKPQAHGAPAPPSGSAPHFL-OH, MW= 3219.6. Adrenomedullin (AM) is a ubiquitously expressed peptide initially isolated from phaechromyctoma in 19931. AM was initially identified as a vasodilator, some have cited this as the most potent endogenous vasodilatory peptide found in the body2. Differences in opinion regarding the ability of AM to relax vascular tone arises from the differences in the model system used3. Other effects of AM include increasing the tolerance of cells to oxidative stress and hypoxic injury and angiogenesis. AM is seen as a positive influence in diseases such as hypertension, myocardial infarction, chronic obstructive pulmonary disease and other cardiovascular diseases, whereas it can be seen as a negative factor in potentiating the potential of cancerous cells to extend their blood supply and cause cell proliferation.

Cyclo(RGDfC) TFA (Cyclo(Arg-Gly-Asp-D-Phe-Cys) TFA) is a cyclic pentapeptide, a cyclic RGD polypeptide with high affinity for αvβ3, which is capable of disrupting cellular integrin interactions. Cyclo(RGDfC) TFA inhibits pluripotent gene expression in embryonic stem cells (ESCs) and inhibits tumorigenic potential of mESCs in vivo. Cyclo(RGDfC) TFA inhibits the tumorigenic potential of mESC. Cyclo(RGDfC) TFA can be used for tumor-related studies.

Substance P (alligator), a neuropeptide derived from alligator, possesses a primary structure delineated as Arg-Pro-Arg-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2 [1].

Kisspeptin-10, a neuropeptide present in the brains, ovaries, and testes of zebrafish, plays a critical role in gonadal development and steroid expression. At a concentration of 10 ng/ml, it enhances the mRNA levels for the luteinizing hormone (Lh) receptor and both progestin receptor a (Pra) and Prb in zebrafish ovarian follicles. In female goldfish, doses of 0.1 and 1 µg/g of Kisspeptin-10 elevate serum levels of luteinizing hormone, with no similar effect observed in male goldfish.

R 715, a bradykinin B1 receptor antagonist, inhibits contractions in isolated human umbilical cords that express bradykinin B1 receptors (pA2 = 8.49). When administered at doses of 200, 400, and 600 µg/kg, R 715 enhances latency to tail withdrawal in the tail-flick test for diabetic neuropathy mouse models induced by streptozotocin (STZ), signaling potential analgesic properties. Furthermore, at a 1 mg/kg per day dosage, it mitigates symptoms in a mouse model of experimental autoimmune encephalomyelitis (EAE) induced by MOG35-55 antigen peptide, such as reducing hind limb weakness and paralysis, improving gait symmetry, and decreasing spinal inflammation, neuron demyelination, and lesion monocyte invasion. Additionally, R 715 at 0.01 nmol/animal, administered intracerebroventricularly (i.c.v.), lowers mean arterial blood pressure and increases heart rate in spontaneously hypertensive rats, indicating cardiovascular effects.

[Leu144,Arg147]-PLP (139-151) is a mutated fragment of the myelin proteolipid protein (PLP), featuring substitutions of tryptophan to leucine and histidine to arginine at positions 144 and 147, respectively. Immunizing mice with this peptide (50 µg) mixed in complete Freund's adjuvant (CFA) elevates IL-4 levels in the spleen. While it suppresses Th1 cell activation in vitro, it does not do so in vivo; instead, it promotes the development of regulatory T cells. Preimmunization with [Leu144, Arg147]-PLP (139-151) postpones the onset of experimental autoimmune encephalomyelitis (EAE) triggered by encephalitogenic peptides from PLP (178-191), myelin oligodendrocyte glycoprotein (MOG) (92-106), or myelin basic protein (MBP) in mice.

LIH383 is a peptide agonist specifically designed to activate the chemokine (C-X-C motif) receptor 7 (CXCR7), which functions both as a chemokine and an opioid peptide scavenger receptor. Demonstrating a high selectivity, LIH383 activates CXCR7 with an effective concentration (EC50) of 0.61 nM, showing significantly lower affinity towards μ-, δ-, and κ-opioid receptors, as well as the nociceptin opioid peptide (NOP) receptor, even at concentrations of 3 µM in β-arrestin recruitment assays. Furthermore, at a concentration of 3 µM, LIH383 effectively inhibits the uptake of opioid peptides by CXCR7, a process normally induced by dynorphin A, a non-selective opioid receptor agonist, in U87-ACKR3 cells.

Ribosomal protein L3 peptide (202-222) is a peptide with the sequenceH2N-Met-Ser-His-Arg-Lys-Tyr-Glu-Ala-Pro-Arg-His-Gly-His-Leu-Gly-Phe-Leu-Pro-Arg-Lys-Arg-amide, MW=2573.

Adrenomedullin (AM) (1-12), human, is a peptide with the sequence Tyr-Arg-Gln-Ser-Met-Asn-Asn-Phe-Gln-Gly-Leu-Arg. Adrenomedullin (AM) (1-12), human, was initially identified as a vasodilator, and as such, it has the ability to relax vascular tone. Other

Atrial Natriuretic Peptide (ANP) has the sequence of H-Ser-Leu-Arg-Arg-Ser-Ser-Cys-Phe-Gly-Gly-Arg-OH, is a 28 amino acid peptide. ANP is a powerful vasodilator, and a protein (polypeptide) hormone secreted by heart muscle cells. It is involved in the hom

Locustamyotropin is a novel peptide isolated from Leucophae maderae; stimulates the spontaneous contractions of the hindgut of Leucophaea maderae.