Valyl polypeptide chain (ウナギのヘモグロビンのN末端アミノ酸配列に関する研究-1,2-〔英文〕)

概要

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N-Terminal amino acid sequences of the valyl polypeptide chains of the four hemoglobin components (F1, F2, S1, and S2) of eel, Anguilla japonica, were analyzed by the PTC-DNP method and the leucine aminopeptidase method. Results obtained are summarized as follows: (1) The N-terminal sequence of the valyl polypeptide chain was Val-Glu-Thr-Asn-… for components S1 and S2. As far as the present results are concerned, therefore, there are no differences between components F1 and F2 nor between S1 and S2. In the four components, Val was the only common residue. (2) It seemed impossible to judge, based on the present results, which chain of the α and β chains of higher vertebrate Hb is comparable to the valyl chain of each Hb component of eel.
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