MOCS2

Chr 5

molybdenum cofactor synthesis 2

Also known as: MCBPE, MOCO1, MOCODB, MOCODB1, MPTS

Eukaryotic molybdoenzymes use a unique molybdenum cofactor (MoCo) consisting of a pterin, termed molybdopterin, and the catalytically active metal molybdenum. MoCo is synthesized from precursor Z by the heterodimeric enzyme molybdopterin synthase. The large and small subunits of molybdopterin synthase are both encoded from this gene by overlapping open reading frames. The proteins were initially thought to be encoded from a bicistronic transcript. They are now thought to be encoded from monocistronic transcripts. Alternatively spliced transcripts have been found for this locus that encode the large and small subunits. [provided by RefSeq, Jul 2008]

GeneReviewsResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtMolybdenum cofactor deficiency, type B1

Clinical highlights

Gene-disease validity (ClinGen)
sulfite oxidase deficiency due to molybdenum cofactor deficiency type B1 · ARDefinitivesufficient evidence for diagnostic panels
Interpreting a novel variant
Loss of function is the curated mechanism (Gene2Phenotype), though the gene is not strongly LoF-constrained in the population — weigh truncating variants against that tolerance.Curated gene-level mechanism — a prior for triage, not a per-variant call.
0
Active trials
6
Pubs (1 yr)
P/LP submissions
P/LP missense
1.39
LOEUF
LOF
Mechanism· G2P
📖
GeneReview available — MOCS2
Authoritative clinical overview · Recommended first read
Open GeneReview ↗
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.39LOEUF
pLI 0.000
Z-score 0.79
OE 0.71 (0.391.39)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
-0.08Z-score
OE missense 1.02 (0.871.21)
101 obs / 98.8 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios?
LoF OE?0.71 (0.391.39)
00.351.4
Missense OE?1.02 (0.871.21)
00.61.4
Synonymous OE?0.86
01.21.6
LoF obs/exp: 6 / 8.5Missense obs/exp: 101 / 98.8Syn Z: 0.71

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

MOCS2 · protein map & ClinVar variants

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

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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