selenocysteine-specific elongation factor; elongation factor sec; eukaryotic elongation factor, selenocysteine-tRNA-specific (EEFSEC, SELB)
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Function
- translation factor necessary for incorporation of selenocysteine into proteins
- probably replaces EF-Tu for insertion of selenocysteine directed by the UGA codon
- selB binds GTP & GDP
Structure
- belongs to the GTP-binding elongation factor family selB subfamily