Difference between revisions of "RRNA operon"
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| + | The rRNA operon encodes for the ribosomal RNA, which comprises the ribosomes. Three distinct rRNA sequences exist in the operon, encoding for the two subunits of the ribosome; the 5S and 23S sequences code for the large subunit, while the 16S sequence encodes for the small subunit. | ||
| + | The three sequences are coded in the following order, from 3' to 5': 16S, 23S, 5S. | ||
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| + | The 3' end of the 16S RNA, or small subunit, binds to the 5' end of the messenger RNA during transcription, specifically to the [http://en.wikipedia.org/wiki/Shine-Dalgarno_sequence Shine-Dalgarno sequence]. This aligns the mRNA's start codon for transcription. The 16S rRNA itself contains an anti-Shine-Dalgarno sequence on its 3' end. | ||
Revision as of 04:01, 2 September 2008
The rRNA operon encodes for the ribosomal RNA, which comprises the ribosomes. Three distinct rRNA sequences exist in the operon, encoding for the two subunits of the ribosome; the 5S and 23S sequences code for the large subunit, while the 16S sequence encodes for the small subunit.
The three sequences are coded in the following order, from 3' to 5': 16S, 23S, 5S.
The 3' end of the 16S RNA, or small subunit, binds to the 5' end of the messenger RNA during transcription, specifically to the Shine-Dalgarno sequence. This aligns the mRNA's start codon for transcription. The 16S rRNA itself contains an anti-Shine-Dalgarno sequence on its 3' end.
| Gene Name | Gene Coordinates | Number of Base Pairs (Length) | Closest Match on BLAST (Homolog) | Score of Nearest Match | E-value of Nearest Match | Percent Identity to Nearest Match |
|---|---|---|---|---|---|---|
| 16S rRNA | 2397347..2398825 | 1479 bp | Halobacterium sp. NRC - 1 | 1966 | 0.0e+00 | 92.12% |
| Gap Bases | 2398825..2399190 | 365 | N/A | N/A | N/A | N/A |
| 23S rRNA | 2399190..2402100 | 2911 bp | Natronomonas pharaonis DSM 2160 | 1899 | 0.0e+00 | 90.06% |
| Gap Bases | 2402100..2402216 | 116 | N/A | N/A | N/A | N/A |
| 5S rRNA | 2402216..2402338 | 123bp | Halobacterium sp. NRC - 1 | 143 | 3.0e-36 | 90.00% |
