PUS3

Chr 11AR

pseudouridine synthase 3

Also known as: 2610020J05Rik, DEG1, FKSG32, MRT55, NEDMIGS

This gene encodes pseudouridine synthase 3, which catalyzes the formation of pseudouridine at position 39 in the anticodon stem and loop of transfer RNAs. Biallelic mutations cause autosomal recessive neurodevelopmental disorder with microcephaly and gray sclerae. The gene shows high constraint against loss-of-function variants (LOEUF 1.115), indicating intolerance to haploinsufficiency in the general population.

OMIMResearchSummary from RefSeq, OMIM, UniProt
LOFmechanismARLOEUF 1.111 OMIM phenotype
Clinical SummaryPUS3
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
1.11LOEUF
pLI 0.000
Z-score 1.16
OE 0.72 (0.481.11)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint
0.13Z-score
OE missense 0.98 (0.881.08)
261 obs / 267.2 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios
LoF OE0.72 (0.481.11)
00.351.4
Missense OE0.98 (0.881.08)
00.61.4
Synonymous OE0.98
01.21.6
LoF obs/exp: 15 / 20.7Missense obs/exp: 261 / 267.2Syn Z: 0.13
Curated Mechanism (G2P)Gene2Phenotype (DDG2P) ↗
definitivePUS3-related neurodevelopmental disorder with microcephaly and gray scleraeLOFAR

Predictions shown for reference only — model trained on dominant genes, not applicable to AR conditions.

DN
0.6259th %ile
GOF
0.5464th %ile
LOF
0.3842th %ile

The Badonyi & Marsh prediction model was trained exclusively on dominant disease genes. Predictions are not reliable for genes with autosomal recessive inheritance and are shown at reduced opacity for reference only.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

PUS3 · 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
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