A novel ferritin gene, SferH‐5, reveals heterogeneity of the 26.5‐kDa subunit of soybean (Glycine max) seed ferritin
FEBS Letters2007Vol. 581(30), pp. 5796–5802
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Xiangbai Dong, Qiming Sun, Dongping Wei, Jiahuang Li, Jie Li, Bo Tang, Qi Jia, Wenjun Hu, Yongjuan Zhao, Zichun Hua
Abstract
A novel ferritin cDNA, SferH-5, has been cloned from 7-day-old soybean seedlings. Putative SferH-5 has 96% identity with SferH-1 reported previously. All the five amino acid variants distributed in the mature region are not involved in highly conserved residues associated with ferroxidase activity center. We speculate that SferH-5 encodes a novel 26.5-kDa subunit of soybean seed ferritin, which is designated H-5 in this study. Recombinant H-5 was able to assemble, together with co-expressed H-2, as a functional soybean seed ferritin-like complex, H-5/H-2. Our data reveal the potential heterogeneity of the 26.5-kDa subunit of soybean seed ferritin.
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