The crystal structure of Thermus thermophilus elongation factor G without guanine nucleotide was determined to 2.85 A. This GTPase has five domains with overall dimensions of 50 x 60 x 118 A. The GTP binding domain has a core common to other GTPases with a unique subdomain which probably functions as an intrinsic nucleotide exchange factor ...
The crystal structure of Thermus thermophilus elongation factor G without guanine nucleotide was determined to 2.85 A. This GTPase has five domains with overall dimensions of 50 x 60 x 118 A. The GTP binding domain has a core common to other GTPases with a unique subdomain which probably functions as an intrinsic nucleotide exchange factor. Domains I and II are homologous to elongation factor Tu and their arrangement, both with and without GDP, is more similar to elongation factor Tu in complex with a GTP analogue than with GDP. Domains III and V show structural similarities to ribosomal proteins. Domain IV protrudes from the main body of the protein and has an extraordinary topology with a left-handed cross-over connection between two parallel beta-strands.
Related Citations:
The Structure of Elongation Factor G in Complex with Gdp: Conformational Flexibility and Nucleotide Exchange Al-Karadaghi, S., Aevarsson, A., Zheltonosova, J., Garber, M., Liljas, A. () To be published --: --
Structure-Based Sequence Alignment of Elongation Factors TU and G with Related Gtpases Involved in Translation Aevarsson, A. (1995) J Mol Evol 41: 1096
Ribosomal Proteins and Elongation Factors Liljas, A., Garber, M. (1995) Curr Opin Struct Biol 5: 721
The Crystal Structure of Elongation Factor G Complexed with Gdp, at 2.7 A Resolution Czworkowski, J., Wang, J., Steitz, T.A., Moore, P.B. (1994) EMBO J 13: 3661
Organizational Affiliation:
Department of Molecular Biophysics, University of Lund, Sweden.
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