5.4.99.24: 23S rRNA pseudouridine955/2504/2580 synthase
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For detailed information about 23S rRNA pseudouridine955/2504/2580 synthase, go to the full flat file.
Reaction
Synonyms
pseudouridine synthases RluC, ribosomal large subunit pseudouridine synthase C, RLuc, YceC
ECTree
5.4.99.24 23S rRNA pseudouridine955/2504/2580 synthaseAdvanced search results
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Engineering on EC 5.4.99.24 - 23S rRNA pseudouridine955/2504/2580 synthase
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PROTEIN VARIANTS 
ORGANISM
UNIPROT
COMMENTARY 
LITERATURE
D139N
site-directed mutagenesis of the chimeric enzyme mutant RluCD, the mutant is catalytically inactive
additional information
additional information
a proteolytically derived fragment of the enzyme consisting of residues 89-319 retains catalytic activity
additional information
construction of a chimeric pseudouridine synthase (RluCD) containing the N-terminal S4 domain of enzyme RluC (EC 5.4.99.24) and the C-terminal catalytic domain of enzyme RluD (EC 5.4.99.23). The chimeric mutant is able to introduce excessive pseudouridines into rRNA at non-native positions. The chimeric enzyme RluCD is used as a tool to study an effect of over-modification of rRNA on the ribosome biogenesis. Excessive pseudouridylation of 23S rRNA reduces progression of ribosome assembly during early or middle stages. A modification interference approach identifies the sites in 23S rRNA whose modification prevents ribosome assembly. It is plausible that pseudouridines can cause RNA misfolding when present at non-native positions. RluCD isomerizes many uridines of rRNA in a non-specific manner. Induction of the RluCD at the exponential growth phase leads to severe inhibition of translation while transcription is only slightly affected
