Abstract:
:Affinity labelling of E. coli ribosomes with the 2',3'-O-[4-(N-2-chloroethyl)-N-methylamino]benzylidene derivative of AUGU6 was studied within the initiation complex (complex I) obtained by using fMet-tRNAMetf and initiation factors and within the pretranslocational complex (complex II) obtained by treatment of complex I with the ternary complex Phe-tRNAPhe.GTP.EF-Tu. Both proteins and rRNA of 30 S as well as 50 S subunits were found to be labelled. Sets of proteins labelled within complexes I and II differ considerably. Within complex II, proteins S13 and L10 were labelled preferentially. On the other hand, within complex I, multiple modification is observed (proteins S4, S12, S13, S14, S15, S18, S19, S20/L26 were found to be alkylated) despite the single fixation of a template in the ribosome by interaction of the AUG codon with fMet-tRNAMetf.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Babkina GT,Veniaminova AG,Vladimirov SN,Karpova GG,Yamkovoy VI,Berzin VA,Gren EJ,Cielens IEdoi
10.1016/0014-5793(86)80714-1subject
Has Abstractpub_date
1986-07-07 00:00:00pages
340-4issue
2eissn
0014-5793issn
1873-3468pii
0014-5793(86)80714-1journal_volume
202pub_type
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