Cu,Zn superoxide dismutase from Trematomus bernacchii: functional conservation and erratic molecular evolution in Antarctic teleosts.
[No authors listed]
摘要
In the present study, we describe the purification and molecular characterization of Cu,Zn superoxide dismutase (SOD) from Trematomus bernacchii, a teleost widely distributed in many areas of Antarctica, that plays a pivotal role in the Antarctic food chain. The amino acid and cDNA sequences have been obtained using both biochemical and molecular biology approaches and are compared with Cu,Zn SODs from other fishes. Assessment of the primary sequences highlights that the catalytically important residues are fully conserved in Cu,Zn SOD from T. bernacchii. Phylogenetic analyses performed on Cu,Zn SOD amino acid sequences permit speculation regarding the evolution of this protein. In particular, the data confirms the erratic differentiation of these proteins and concurs with the theory of the "unclock-like" behaviour of Cu,Zn SOD evolution.
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基因功能
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原始数据
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文献解读
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