TULP1
Tubby-related protein 1
Also known as: LCA15, RP14, TUBL1, TULP1_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O00294
- Gene
- TULP1
- Ensembl
- ENSG00000112041
- Chromosome
- 6
- Canonical length
- 542 aa
- Protein class
- Disease related genes, Human disease related genes, Predicted intracellular proteins
- Secretome location
- Intracellular and membrane
- Quaternary structure
- Homodimer
OverviewNCBI Gene
This gene encodes a member of the tubby-like gene family (TULPs). Members of this family have been identified in plants, vertebrates, and invertebrates. TULP proteins share a conserved C-terminal region of approximately 200 amino acid residues. The protein encoded by this gene is thought to play a role in the physiology of photoreceptors. Mutations in this gene are associated with recessive juvenile retinitis pigmentosa and Leber congenital amaurosis-15. [provided by RefSeq, Nov 2016]
Canonical amino-acid sequenceUniProt
542 residues, UniProt reviewed canonical sequence.
>O00294|TULP1
1 MPLRDETLRE VWASDSGHEE ESLSPEAPRR PKQRPAPAQR LRKKRTEAPE SPCPTGSKPR
61 KPGAGRTGRP REEPSPDPAQ ARAPQTVYAR FLRDPEAKKR DPRETFLVAR APDAEDEEEE
121 EEEDEEDEEE EAEEKKEKIL LPPKKPLREK SSADLKERRA KAQGPRGDLG SPDPPPKPLR
181 VRNKEAPAGE GTKMRKTKKK GSGEADKDPS GSPASARKSP AAMFLVGEGS PDKKALKKKG
241 TPKGARKEEE EEEEAATVIK KSNQKGKAKG KGKKKAKEER APSPPVEVDE PREFVLRPAP
301 QGRTVRCRLT RDKKGMDRGM YPSYFLHLDT EKKVFLLAGR KRKRSKTANY LISIDPTNLS
361 RGGENFIGKL RSNLLGNRFT VFDNGQNPQR GYSTNVASLR QELAAVIYET NVLGFRGPRR
421 MTVIIPGMSA ENERVPIRPR NASDGLLVRW QNKTLESLIE LHNKPPVWND DSGSYTLNFQ
481 GRVTQASVKN FQIVHADDPD YIVLQFGRVA EDAFTLDYRY PLCALQAFAI ALSSFDGKLA
541 CELocalizationUniProt · AlphaFold · HPA
Whether an antibody against TULP1 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Cell surface
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.47
- Highest tissue expression
- 194 nTPM
Expression across tissuesHPA
Tissue
- retina: 194 nTPM
- choroid plexus: 1.1 nTPM
- hippocampal formation: 0.7 nTPM
- prostate: 0.7 nTPM
- skin: 0.5 nTPM
- endometrium: 0.4 nTPM
Single-cell type
- rod photoreceptor cells: 427 nCPM
- cone photoreceptor cells: 371 nCPM
- retinal bipolar cells: 43 nCPM
- retinal ganglion cells: 16 nCPM
- retinal horizontal cells: 12 nCPM
- müller glia: 7.8 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- cerebral cortex: 0.8 nTPM
- choroid plexus: 0.7 nTPM
- hippocampal formation: 0.6 nTPM
- hypothalamus: 0.5 nTPM
- spinal cord: 0.3 nTPM
- medulla oblongata: 0.2 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about TULP1.
Disease | AllUniProt
Conditions TULP1 is implicated in, by any mechanism.
- Retinitis pigmentosa 14 (RP14) MIM:600132
- Leber congenital amaurosis 15 (LCA15) MIM:613843
Disease | GeneticClinVar
150 pathogenic / likely-pathogenic of 867 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Retinitis pigmentosa 14
- Leber congenital amaurosis 15
- Retinal dystrophy
- Leber congenital amaurosis
- Retinitis pigmentosa
ReferencesPubMed · IEDB
Publications for TULP1 from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.
Reference: AutoantibodyPubMed
2 publications
- Anti-Programmed Death Ligand-1 Induced Acute Vision Loss in a Patient With Cancer-Associated Retinopathy.
2022 · Cureus · RCR 0.6 · 8 citations - Correlation of Anti-TULP1 Autoantibodies with Breast Cancer and Autoimmune Retinopathy.
2025 · Int J Mol Sci · 1 citations
Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.61
- gnomAD pLI
- 0
- gnomAD missense Z
- 0.65
- DepMap mean gene effect
- -0.09
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- dendrite development
- detection of light stimulus involved in visual perception
- eye photoreceptor cell development
- phagocytosis, recognition
- photoreceptor cell maintenance
- positive regulation of phagocytosis
- protein localization to cilium
- protein localization to photoreceptor outer segment
- retina development in camera-type eye
- retina homeostasis
- visual perception
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of TULP1 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads TULP1 as an antibody target. Whether an autoantibody or antibody against TULP1 could matter depends on whether native TULP1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
TULP1 is annotated at the cell surface, where native TULP1 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label TULP1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
Loading the interactive Seroatlas protein explorer...