• 제목/요약/키워드: [Arg8]-vasotocin

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붕장어 (Conger myriaster)의 뇌로부터 Vasopressin-related Peptide, [Arg8]-vasotocin의 정제 (Purification of Vasopressin-related Peptide, [Arg8]-vasotocin, from the Brain of Conger Eel (Conger myriaster))

  • 고혜진;김찬희;김은정;김인혜;박희연;윤호동;홍용기;박남규
    • 한국수산과학회지
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    • 제38권1호
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    • pp.6-11
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    • 2005
  • Vasopressin (VP)-related peptide was purified from the brain extract of conger eel (Conger myriaster) by reverse-phase, ion-exchange high performance liquid chromatography (HPLC). This peptide with a molecular weight of 1,051.2 Da was determined as $H-Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Arg-Gly-NH_2$, whose Cys residues made an intramolecular disulfide bridge by the automated amino acid sequence analysis, MALDI- TOF mass spectrometry. It's sequence was confirmed by identity of the elution position with the synthetic peptide in HPLC system. As a result of homology investigation, the primary structure of this peptide was the same as that of VP-superfamily member, $[Arg^8]-vasotocin$. The synthetic peptide showed a contractile activity at a minimal effective concentration of $10^{-10}\;M$ on the intestinal smooth muscle of goldfish.