peptide t tfa

Peptide T (TFA), an octapeptide derived from the V2 region of HIV-1 gp120, functions as a ligand for the CD4 receptor, thereby effectively inhibiting HIV binding to the CD4 receptor.

Fmoc-Thr(tBu)-OH is a threonine derivative commonly used in Fmoc-based solid-phase peptide synthesis, with the t-butyl side-chain protecting group removable under TFA treatment while remaining stable during cleavage from Wang or Rink amide resins, allowing controlled peptide assembly.

Acyline TFA, a gonadotropin-releasing hormone (GnRH) peptide analogue, functions as a GnRH antagonist, effectively suppressing gonadotropin and testosterone (T) levels [1].

LCMV gp33-41 (TFA), an 11-amino-acid carboxyl-extended peptide, comprises a lymphocytic choriomeningitis virus sequence that is presented by MHC class I H-2Db molecules to cytotoxic T lymphocytes [1].

CD31 TFA, also known as platelet endothelial cell adhesion molecule-1 (PECAM-1), functions as the specific receptor for Clostridium perfringens beta-Toxin (CPB) in endothelial cells. It is recognized as an ER-MP12 antigen and plays a pivotal role in connecting mechanical stress, metabolism, and inflammation. Additionally, the CD31 TFA peptide facilitates the phosphorylation of CD31 ITIM 686 and SHP2, further inhibiting TCR-induced T-cell activation [1]-[5].

Myelin Basic Protein (87-99) TFA, an encephalitogenic peptide, promotes basic protein-specific T cell proliferation and induces Th1 polarization in peripheral blood mononuclear cells, contributing to the pathogenesis of multiple sclerosis (MS) [1] [2].

ELAAWCRWGFLLALLPPGIAG TFA (P5), a 21-amino-acid peptide (aa 5-25) originating from the rat HER2/neu protein, has been shown to elicit cytotoxic T lymphocyte (CTL) responses in mice with HER2-positive tumors [1].

Caerin 1.1 TFA, a host defense peptide derived from the Australian tree frog Litoria's glandular secretions, exhibits anti-proliferative effects on HeLa cells and induces apoptosis. Additionally, it has the potential to augment adaptive T cell immune responses [1].

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.

Tetanus Toxin (830–844) TFA is a bioactive peptide. It acts as a CD4+ T cell epitope derived from tetanus toxin (TT830–844). This hybrid CD4+ T cell epitope binds to various HLA-DRB molecules, potentially activating CD4+ T cell responses in a broad population.

Vm24-toxin (Vaejovis mexicanus peptide 24) TFA is a peptide composed of 36 amino acids, known for effectively and selectively blocking Kv1.3 channels, exhibiting an affinity (Kd) of approximately 3 pM in lymphocytes. It demonstrates over 1500 times greater affinity for Kv1.3 compared to other tested potassium channels. The structure of Vm24-toxin TFA includes a twisted cystine-stabilized α/β motif, comprising a single-turn α-helix and a three-stranded antiparallel β-sheet, stabilized by four disulfide bridges. Additionally, Vm24-toxin TFA can attenuate the response of CD4+ effector memory T cells to T-cell receptor (TCR) stimulation.

PD-L1 inhibitory peptide TFA is an inhibitory peptide targeting programmed cell death ligand 1 (PD-L1). It binds to PD-L1, lifting immune suppression and restoring the antitumor activity of T cells. PD-L1 inhibitory peptide TFA shows potential for use in cancer research.

EBVBZLF1 (190-197) TFA is an immunodominant CEF control peptide derived from the Epstein-Barr virus (EBV). It serves as an optimal epitope for CD8+ T cells, facilitating the release of IFNg. The CD8 positive cytotoxic T lymphocyte (CTL) response elicited by EBVBZLF1 (190-197) TFA is diverse and capable of cross-recognizing similar peptide segments from both host proteins and bacterial proteins. This compound is useful for research in autoimmune diseases.