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Collagen, type IV, alpha 5

mammalian protein found in Homo sapiens

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 27, 2026
Entity authorityQ21102495
Source-derived summary

Collagen alpha-5(IV) chain is a protein that in humans is encoded by the COL4A5 gene.

This gene encodes one of the six subunits of type IV collagen, the major structural component of basement membranes. Mutations in this gene are associated with X-linked Alport syndrome, also known as hereditary nephritis. Like the other members of the type IV collagen gene family, this gene is organized in a head-to-head conformation with another type IV collagen gene so that each gene pair shares a common promoter. Three transcript variants have been identified for this gene.

Editorial summary

“Collagen, type IV, alpha 5” enters the record as mammalian protein found in Homo sapiens. Crown Archives preserves that source wording while asking what Collagen, type and alpha can confirm, complicate or overturn.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current 92-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Collagen, type and alpha.
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“Collagen, type IV, alpha 5” is worth following because a concise public description often conceals a longer documentary argument. Here, Collagen, type and alpha provides the most credible route into that argument.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 27, 2026. The linked authority identifier is Q21102495. None of the 0 selected statements returned an explicit reference.

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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.

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Source & attribution

This entry incorporates text from Collagen, type IV, alpha 5” 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.