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- PsaA_RNA_motif abstract "The psaA RNA motif describes a class of RNAs with a common secondary structure. psaA RNAs are exclusively found in locations that presumably correspond to the 5' untranslated regions of operons formed of psaA and psaB genes. For this reason, it was hypothesized that psaA RNAs function as cis-regulatory elements of these genes. The psaAB genes encode proteins that form subunits in the photosystem I structure used for photosynthesis. psaA RNAs have been detected only in cyanobacteria, which is consistent with their association with photosynthesis.psaAB genes are known to be regulated in species of cyanobacteria that do not use psaA RNAs, and this system of regulation involves transcription factor proteins. In this system, the expression of psaAB genes is increased when cells are growing with limited amount of light, presumably to maximize their energy from the limited resource. On the other hand, the genes' expression is reduced when light levels are high, presumable to reduce damage that can be caused by free radicals that are a byproduct of photosynthesis. A region of the psaA RNA motif corresponds to the expected sequence of a binding site of the NtcA protein, which is involved in nitrogen regulation.Structurally, the psaA RNA motif consists of a somewhat complex arrangement of stems resulting from base pairing, and many stem-loops are terminated by the stable UNCG tetraloop. Most of the conserved nucleotides in the motif participate in standard Watson-Crick base pairs. However, since the precise function of psaA RNAs is unknown, it is also unknown what biochemical role these features play.".
- PsaA_RNA_motif thumbnail PsaA-RNA.svg?width=300.
- PsaA_RNA_motif wikiPageID "26764428".
- PsaA_RNA_motif wikiPageLength "3719".
- PsaA_RNA_motif wikiPageOutDegree "16".
- PsaA_RNA_motif wikiPageRevisionID "679022347".
- PsaA_RNA_motif wikiPageWikiLink 5_untranslated_region.
- PsaA_RNA_motif wikiPageWikiLink Biomolecular_structure.
- PsaA_RNA_motif wikiPageWikiLink Category:Cis-regulatory_RNA_elements.
- PsaA_RNA_motif wikiPageWikiLink Cis-Regulatory_element.
- PsaA_RNA_motif wikiPageWikiLink Cis-regulatory_element.
- PsaA_RNA_motif wikiPageWikiLink Cyanobacteria.
- PsaA_RNA_motif wikiPageWikiLink Five_prime_untranslated_region.
- PsaA_RNA_motif wikiPageWikiLink Gene.
- PsaA_RNA_motif wikiPageWikiLink Operon.
- PsaA_RNA_motif wikiPageWikiLink Photosynthesis.
- PsaA_RNA_motif wikiPageWikiLink Photosystem_I.
- PsaA_RNA_motif wikiPageWikiLink Protein.
- PsaA_RNA_motif wikiPageWikiLink RNA.
- PsaA_RNA_motif wikiPageWikiLink Radical_(chemistry).
- PsaA_RNA_motif wikiPageWikiLink Secondary_structure.
- PsaA_RNA_motif wikiPageWikiLink Stem-loop.
- PsaA_RNA_motif wikiPageWikiLink Tetraloop.
- PsaA_RNA_motif wikiPageWikiLink Transcription_factor.
- PsaA_RNA_motif wikiPageWikiLinkText "PsaA RNA motif".
- PsaA_RNA_motif caption "Consensus secondary structure of psaA RNAs".
- PsaA_RNA_motif hasPhotoCollection PsaA_RNA_motif.
- PsaA_RNA_motif id "RF01752".
- PsaA_RNA_motif name "psaA RNA".
- PsaA_RNA_motif rfam "RF01752".
- PsaA_RNA_motif rnaType "Cis-regulatory element".
- PsaA_RNA_motif symbol "psaA RNA".
- PsaA_RNA_motif taxDomain Cyanobacteria.
- PsaA_RNA_motif wikiPageUsesTemplate Template:Infobox_rfam.
- PsaA_RNA_motif wikiPageUsesTemplate Template:Rfam.
- PsaA_RNA_motif subject Category:Cis-regulatory_RNA_elements.
- PsaA_RNA_motif type Element.
- PsaA_RNA_motif comment "The psaA RNA motif describes a class of RNAs with a common secondary structure. psaA RNAs are exclusively found in locations that presumably correspond to the 5' untranslated regions of operons formed of psaA and psaB genes. For this reason, it was hypothesized that psaA RNAs function as cis-regulatory elements of these genes. The psaAB genes encode proteins that form subunits in the photosystem I structure used for photosynthesis.".
- PsaA_RNA_motif label "PsaA RNA motif".
- PsaA_RNA_motif sameAs m.0bmfll3.
- PsaA_RNA_motif sameAs Q7253888.
- PsaA_RNA_motif sameAs Q7253888.
- PsaA_RNA_motif wasDerivedFrom PsaA_RNA_motif?oldid=679022347.
- PsaA_RNA_motif depiction PsaA-RNA.svg.
- PsaA_RNA_motif isPrimaryTopicOf PsaA_RNA_motif.