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PDIA6 biomolecular condensation

Candidate: concept label1 source documents4 linked claims
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Aliases

PDIA6 condensates, PDIA6 condensation, quality control granules

Extracted Explainers

What the tool is doing

The paper describes a Ca2+-triggered condensation of PDIA6 into ER quality control granules that recruit proinsulin. This condensate is linked to faster oxidative folding and reduced aggregation of proinsulin.

Source 1DOIPubMed

Resources required

The mechanism requires PDIA6 and Ca2+ within the endoplasmic reticulum. The abstract also indicates involvement of specific thioredoxin-like domains in PDIA6.

Source 1DOIPubMed

What problem it solves

It addresses how ER quality control can promote productive proinsulin folding while limiting aggregation.

Source 1DOIPubMed

What it does not solve

The abstract does not show that this condensation is a general-purpose engineering platform or that it applies beyond the reported ER proteostasis context.

Source 1DOIPubMed

Alternatives

The abstract contrasts this mechanism with condensation mechanisms observed for proteins containing low-complexity domains.

Source 1DOIPubMed

Evidence Snippets

Ca2+ triggers the condensation of PDIA6, an ER-resident disulfide isomerase and molecular chaperone, into quality control granules.
Evidence 1Source 1DOIPubMedprovenance

Supporting Sources

Linked Claims

Claim 1biological rolesupports2025Source 1DOIPubMed

PDIA6 condensate-mediated control of proinsulin folding and aggregation is essential for insulin secretion.

Quoted textsource-backed
essential for secretion of insulin
Claim 2functional effectsupports2025Source 1DOIPubMed

PDIA6 condensates recruit proinsulin and accelerate oxidative proinsulin folding while suppressing proinsulin aggregation.

Quoted textsource-backed
We further show that the PDIA6 condensates recruit proinsulin, thereby accelerating the oxidative proinsulin folding and suppressing the proinsulin aggregation inside quality control granules
Claim 3mechanismsupports2025Source 1DOIPubMed

Ca2+ triggers condensation of PDIA6 into ER quality control granules.

Quoted textsource-backed
Here we show that Ca2+ triggers the condensation of PDIA6, an ER-resident disulfide isomerase and molecular chaperone, into quality control granules.
Claim 4mechanismsupports2025Source 1DOIPubMed

PDIA6 condensation is mediated by transient but specific electrostatic interactions between the first and third folded thioredoxin-like domains of PDIA6 rather than by a low-complexity-domain condensation mechanism.

Quoted textsource-backed
In contrast to the condensation mechanism observed for proteins containing low-complexity domains, our results indicate that transient but specific electrostatic interactions occur between the first and the third folded thioredoxin-like domains of PDIA6.