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PXD073717

PXD073717 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleLoss of function variants in SAXO6, encoding a microtubule inner protein of photoreceptor cilia, causes a late-onset retinal dystrophy
DescriptionOver 500 genes have been linked to various forms of inherited retinal diseases (IRDs), a class of Mendelian conditions affecting the survival and function of rod and cone photoreceptors and leading in most instances to progressive visual loss. Yet, some patients still lack a clear genetic diagnosis, suggesting that more disease-associated genes remain to be discovered. Following the genetic analysis of extended cohorts of individuals diagnosed with late-onset recessive retinal dystrophy, we identified biallelic combinations of six predicted null variants in MDM1 (now renamed SAXO6, stabilizer of axonemal microtubules 6) in six subjects from five families. Iterative ultrastructure expansion microscopy coupled with immuno-gold transmission electron microscopy revealed co-localization of SAXO6 with distinct ciliary microtubules from the immotile cilia present in rod and cone photoreceptors in human retina, as well as from the motile cilia present in lung epithelial cells. Cross-linking mass spectrometry uncovered an interaction between SAXO6 and alpha-tubulin, suggesting that SAXO6 is a microtubule inner protein, a component of the cilium that has never previously been linked to IRD. These results identify SAXO proteins in association with a Mendelian condition, highlighting the fundamental role of photoreceptor cilia in the preservation of retinal health.
HostingRepositoryMassIVE
AnnounceDate2026-02-25
AnnouncementXMLSubmission_2026-02-25_12:15:24.485.xml
DigitalObjectIdentifier
ReviewLevelNon peer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterdanilo ritz
SpeciesList scientific name: Bos taurus; common name: cattle; NCBI TaxID: 9913;
ModificationListunknown modification
InstrumentOrbitrap Eclipse
Dataset History
RevisionDatetimeStatusChangeLog Entry
02026-01-28 08:30:34ID requested
12026-02-25 12:15:25announced
Publication List
no publication
Keyword List
submitter keyword: inherited retinal diseases, retina, microtubule associated protein, connecting cilium, ciliopathy, retinitis pigmentosa, MDM1, SAXO, microtubule inner protein, DatasetType:Proteomics
Contact List
Alexander Schmidt
contact affiliationBiozentrum, Universtiy of Basel, 4056 Basel, Switzerland
contact emailalex.schmidt@unibas.ch
lab head
danilo ritz
contact affiliationUniversity of Basel
contact emaildanilo.ritz@unibas.ch
dataset submitter
Full Dataset Link List
MassIVE dataset URI
Dataset FTP location
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