PEX26

Chr 22AR

peroxisomal biogenesis factor 26

Also known as: PBD7A, PBD7B, PEX26M1T, Pex26pM1T

The protein anchors PEX1 and PEX6 to peroxisome membranes to form AAA ATPase complexes required for importing proteins into peroxisomes. Mutations cause autosomal recessive peroxisome biogenesis disorders including Zellweger syndrome, neonatal adrenoleukodystrophy, infantile Refsum disease, and classical rhizomelic chondrodysplasia punctata due to failure of peroxisomal protein import. Loss-of-function mutations disrupt peroxisome assembly and function by preventing proper formation of the protein import machinery.

GeneReviewsOMIMResearchSummary from RefSeq, OMIM, UniProt
LOFmechanismARLOEUF 0.372 OMIM phenotypes
Clinical SummaryPEX26
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Gene-Disease Validity (ClinGen)
peroxisome biogenesis disorder · ARDefinitive

Definitive — sufficient evidence for diagnostic panels

Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 0.93). One damaged copy is likely sufficient to cause disease.
📖
GeneReview available — PEX26
Authoritative clinical overview · Recommended first read
Open GeneReview ↗

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint
0.37LOEUF
pLI 0.932
Z-score 3.08
OE 0.08 (0.030.37)
Highly constrained

More LoF-intolerant than ~75% of genes

Missense Constraint
-0.37Z-score
OE missense 1.08 (0.961.22)
178 obs / 164.7 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.08 (0.030.37)
00.351.4
Missense OE1.08 (0.961.22)
00.61.4
Synonymous OE1.00
01.21.6
LoF obs/exp: 1 / 13.0Missense obs/exp: 178 / 164.7Syn Z: -0.03

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

PEX26 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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Clinical Literature
Open Research Assistant →
Key Publications
Landmark & review papers · by relevance
PubMed
Top 5 results · since 2015Search PubMed ↗