Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
권호 표지

Purification and Characterization of a Carotenoprotein from Penaeus orientalis

대하(P. orientalis)로부터 분리정제한 Carotenoprotein의 특성에 관한 연구

  • Published : 19940800

Abstract

The isolation, purification and characterization of a carotenoprotein from the carapace of Pnaeus orientalis were investigated. The carotenoprotein was purple with broad λmax between 480, 409, 318 and 280 nm. Apparent structures were estimated by using X-ray diffractometry and scanning electron microscope, respectively. The molecular weight of the carotenoprotein complex had been determined by GPC and PAGE. The heavier complex, designated the $\alpha$-form (M.W = 170 KDa), was dissociated to a major subunit, $\beta$-form (M.W = 42 KDa). SDS-PAGE of $\alpha$-form showed apparently oligomeric pattern, and also $\beta$-form gave two polypeptides corresponding to 22 KDa and 19 KDa, respectively. The amino acid of the two proteins $({\alpha}-and\;{\beta})$-form, lipid and free fatty acid compositions were described. The prosthetic groups of the carotenoprotein were confirmed by TLC, IR, $^1H$-NMR, MS and various organic reactions as astaxanthin, astaxanthin monoester and astaxnathin diester.

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