CACrown ArchivesThe cinema collection
EN/FR
Search
Menu
Research dossier · General Reference

23S rRNA (guanine2445-N2)-methyltransferase

class of enzymes

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionFeb 25, 2026
Entity authorityQ4631541 ↗
Source-derived summary

23S rRNA (guanine2445-N2)-methyltransferase (EC 2.1.1.173, ycbY (gene), rlmL (gene)) is an enzyme with systematic name S-adenosyl-L-methionine:23S rRNA (guanine2445-N2)-methyltransferase. This enzyme catalyses the following chemical reaction

S-adenosyl-L-methionine + guanine2445 in 23S rRNA

⇌

{\displaystyle \rightleftharpoons }

S-adenosyl-L-homocysteine + N2-methylguanine2445 in 23S rRNA

The enzyme methylates 23S rRNA in vitro.

Editorial summary

Begin with the source’s own compact description: “23S rRNA (guanine2445-N2)-methyltransferase” is class of enzymes. The dossier treats that line as a proposition to test through rRNA, guanine2445-N2 and -methyltransferase, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current 48-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, rRNA, guanine2445-N2 and -methyltransferase is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “class of enzymes” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Feb 25, 2026. The linked authority identifier is Q4631541. None of the 0 selected statements returned an explicit reference.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “23S rRNA (guanine2445-N2)-methyltransferase”, its source revision and the description used here.
  2. Expand the search: follow 23S rRNA (guanine2445-N2)-methyltransferase primary sources, 23S rRNA (guanine2445-N2)-methyltransferase archive and rRNA research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “23S rRNA (guanine2445-N2)-methyltransferase”?
  2. Which cited source is closest to the event, object or claim?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “23S rRNA (guanine2445-N2)-methyltransferase” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.