Structural Basis for Dynamic Interdomain Movement and RNA Recognition of the Selenocysteine-Specific Elongation Factor Selb.
Ose, T., Soler, N., Rasubala, L., Kuroki, K., Kohda, D., Fourmy, D., Yoshizawa, S., Maenaka, K.(2007) Structure 15: 577
- PubMed: 17502103 
- DOI: 10.1016/j.str.2007.03.007
- Primary Citation of Related Structures:  
2UWM - PubMed Abstract: 
Selenocysteine (Sec) is the "21st" amino acid and is genetically encoded by an unusual incorporation system. The stop codon UGA becomes a Sec codon when the selenocysteine insertion sequence (SECIS) exists downstream of UGA. Sec incorporation requires a specific elongation factor, SelB, which recognizes tRNA(Sec) via use of an EF-Tu-like domain and the SECIS mRNA hairpin via use of a C-terminal domain (SelB-C) ...