OTC (P00480) variants and mutations

OTC (also known as P00480) is a human protein-coding gene encoding an ornithine transcarbamylase, mitochondrial protein. It combines ornithine with carbamoyl phosphate in the mitochondrial urea cycle, allowing toxic nitrogen to be converted ultimately to urea. Loss-of-function variants cause X-linked OTC deficiency and can produce life-threatening hyperammonemia. This analysis covers 828 OTC variants and mutations. Of these, 90% have computational variant effect predictions. Disease context includes ornithine carbamoyltransferase deficiency, hereditary disease, and Hyperammonemia. Example OTC variants include M1I, M1L, and M1T.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, ClinGen, MaveDB, LitVar.

Notable OTC variants

Examples include M1I, M1L, M1T, M1V, L2V, L2M, L2L, F3L. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.