Brazilian Journal of Medical and Biological Research | |
Characterization of a methionine-rich protein from the seeds of Cereus jamacaru Mill. (Cactaceae) | |
T.c.f.r. Aragão2  P.a.s. Souza1  A.f. Uchôa1  I.r. Costa1  C. Bloch Jr.1  F.a.p. Campos2  | |
[1] ,Universidade Estadual do CearáFortaleza CE ,Brasil | |
关键词: Cactaceae; mandacaru; Cereus jamacaru; cactin; 2S albumins; methionine-rich protein; | |
DOI : 10.1590/S0100-879X2000000800005 | |
来源: SciELO | |
【 摘 要 】
We describe here the isolation and characterization of a major albumin from the seeds of Cereus jamacaru (Cactaceae), to which we gave the trivial name of cactin. This protein has a molecular mass of 11.3 kDa and is formed by a light chain (3.67 kDa) and a heavy chain (7.63 kDa). This protein was isolated using a combination of gel filtration chromatography and reverse-phase HPLC. The amino acid composition of cactin was determined and found to resemble that of the 2S seed reserve protein from the Brazil nut, a protein remarkable for its high methionine content. The usefulness of cactin as a molecular marker in the taxonomy of the Cactaceae is discussed.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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