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UDP-glucosamine 4-epimerase

class of enzymes

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 26, 2023
Entity authorityQ7273191 ↗
Source-derived summary

In enzymology, an UDP-glucosamine 4-epimerase (EC 5.1.3.16) is an enzyme that catalyzes the chemical reaction

UDP-glucosamine

⇌

{\displaystyle \rightleftharpoons }

UDP-galactosamine

Hence, this enzyme has one substrate, UDP-glucosamine, and one product, UDP-galactosamine.

This enzyme belongs to the family of isomerases, specifically those racemases and epimerases acting on carbohydrates and derivatives. The systematic name of this enzyme class is UDP-glucosamine 4-epimerase.

References

MALEY F, MALEY GF (1959). "The enzymic conversion of glucosamine to galactosamine". Biochim. Biophys. Acta. 31 (2): 577–8. doi:10.1016/0006-3002(59)90047-2.

Editorial summary

This brief starts where responsible research should: with the source description of “UDP-glucosamine 4-epimerase” as class of enzymes. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1959, 1016—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where UDP-glucosamine, 4-epimerase and class can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as class of enzymes. Its deeper value depends on whether names, dates, institutions and citations support that framing.

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 Aug 26, 2023. The linked authority identifier is Q7273191. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1959 and 1016.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. 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.

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

Three-step research path

  1. Establish the record: confirm the title “UDP-glucosamine 4-epimerase”, its source revision and the description used here.
  2. Expand the search: follow UDP-glucosamine 4-epimerase primary sources, UDP-glucosamine 4-epimerase archive and UDP-glucosamine 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 “UDP-glucosamine 4-epimerase”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
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Source & attribution

This entry incorporates text from “UDP-glucosamine 4-epimerase” 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.