Dynorphin B
Encyclopedia
Dynorphin B is a form of dynorphin
Dynorphin
Dynorphins are a class of opioid peptides that arise from the precursor protein prodynorphin. When prodynorphin is cleaved during processing by proprotein convertase 2 , multiple active peptides are released: dynorphin A, dynorphin B, and α/β-neo-endorphin...

, it is an endogenous opioid peptide
Opioid peptide
Opioid peptides are short sequences of amino acids that bind to opioid receptors in the brain; opiates and opioids mimic the effect of these peptides. Opioid peptides may be produced by the body itself, for example endorphins. The effects of these peptides vary, but they all resemble opiates...

whose sequence is: Tyr - Gly - Gly - Phe - Leu - Arg - Arg - Gln - Phe - Lys - Leu - Leu - Thr.
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