Possible regulation of DNA methyltransferase expression by RNA processing in Streptococcus pneumoniae.
Atypical ribosome-binding sites lacking Shine-Dalgarno sequences appear to be used for translation of the DpnM and DpnA DNA methyltransferases of the DpnII restriction system. Preliminary results indicate that the 5'-endpoints of DpnII system mRNAs result from degradation of the original transcript. These tentative findings serve as the basis for a possible regulatory model that would accommodate the DpnII cassette either as a single copy in the chromosome or on a multicopy plasmid.
Lacks
S A
SA
Brookhaven National Laboratory, Upton, NY 11973, USA.
Greenberg
B
B
Sabelnikov
A G
AG
D001483:Base Sequence; D001665:Binding Sites; D004269:DNA, Bacterial / Q000737:chemistry / Q000378:metabolism; D015252:Deoxyribonucleases, Type II Site-Specific / Q000378:metabolism; D015964:Gene Expression Regulation, Bacterial; D015971:Gene Expression Regulation, Enzymologic; D008969:Molecular Sequence Data; D012323:RNA Processing, Post-Transcriptional; D012329:RNA, Bacterial / Q000096:biosynthesis; D012333:RNA, Messenger / Q000378:metabolism*; D012270:Ribosomes / Q000378:metabolism; D015265:Site-Specific DNA-Methyltransferase (Adenine-Specific) / Q000096:biosynthesis* / Q000235:genetics; D013296:Streptococcus pneumoniae / Q000201:enzymology* / Q000235:genetics*
D004269:DNA, Bacterial; D012329:RNA, Bacterial; D012333:RNA, Messenger; C062017:DNA modification methylase DpnA; C060695:DNA modification methylase DpnM; D015265:Site-Specific DNA-Methyltransferase (Adenine-Specific); D015252:Deoxyribonucleases, Type II Site-Specific; C024405:GATC-specific type II deoxyribonucleases