Download MendeleyMultiple-site trimethylation of ribosomal protein L11 by the PrmA methyltransferase.
Demirci, H., Gregory, S.T., Dahlberg, A.E., Jogl, G.(2008) Structure 16: 1059-1066
- PubMed: 18611379 Search on PubMedSearch on PubMed Central
- DOI: https://doi.org/10.1016/j.str.2008.03.016
- Primary Citation Related Structures:
3CJQ, 3CJR, 3CJS, 3CJT, 3EGV - PubMed Abstract:
Ribosomal protein L11 is a universally conserved component of the large subunit, and plays a significant role during initiation, elongation, and termination of protein synthesis. In Escherichia coli, the lysine methyltransferase PrmA trimethylates the N-terminal alpha-amino group and the epsilon-amino groups of Lys3 and Lys39. Here, we report four PrmA-L11 complex structures in different orientations with respect to the PrmA active site. Two structures capture the L11 N-terminal alpha-amino group in the active site in a trimethylated post-catalytic state and in a dimethylated state with bound S-adenosyl-L-homocysteine. Two other structures show L11 in a catalytic orientation to modify Lys39 and in a noncatalytic orientation. The comparison of complex structures in different orientations with a minimal substrate recognition complex shows that the binding mode remains conserved in all L11 orientations, and that substrate orientation is brought about by the unusual interdomain flexibility of PrmA.
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI 02912, USA.
Organizational Affiliation:
