1. Recombinant Proteins
  2. Cytokines and Growth Factors
  3. Peptide Hormone & Neuropeptides
  4. Neuropeptides

Neuropeptides are small proteins produced and released by neurons through the regulated secretory route and acting on neural substrates. They exhibit neuromodulatory, neurotransmitter, or hormonal functions. Neuropeptides comprise numerous subfamilies of groups, e.g., hypothalamic and other hormones, tachykinin, opioid peptides, and pancreatic polypeptides. The most familiar peptides that have been found and investigated include the following: neurokinin A (NKA), neurokinin B (NKB), substance P (SP), neuropeptide K (NPK) and neuropeptide gamma (NPG). These five neuropeptides are part of the subfamily of tachykinins. A neuropeptide that is part of the hypothalamic hormones is named “oxytocin”. Neuropeptides are ribosomally synthesized as large precursor molecules in cell soma and dendrites, and the bioactive peptides are excised from prepropeptide precursors by convertase enzymes. Packed in storage vesicles the peptides are axonally transported and released by exocytosis from nerve terminals, and also from dendrites and soma. Most neuropeptides signal via G protein-coupled receptors (GPCRs), with a few exceptions. Neuropeptides play a variety of roles in many physiological processes and serve as potential therapeutic targets for the treatment of some nervous-system disorders.

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