TSTD1
protein-codingthiosulfate sulfurtransferase like domain containing 1
Gene summary
Predicted to enable thiosulfate-thiol sulfurtransferase activity. Predicted to be involved in sulfide oxidation, using sulfide:quinone oxidoreductase. Located in cytoplasm. [provided by Alliance of Genome Resources, Jun 2026]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~1.3 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to TSTD1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001113207.2. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 0 | |||||
| missense | 32 | 32 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 1 | 1 | ||||
| Total | 0 | 0 | 33 | 0 | 0 | 33 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001106678.1 | 4 | MANE Select | |
| Ensembl | ENSP00000388293.2 | 4 | MANE Select | |
| RefSeq | NP_001106676.1 | 3 | Standard | |
| RefSeq | NP_001106677.1 | 3 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Biological Process
- sulfide oxidation, using sulfide:quinone oxidoreductase
Molecular Function
- thiosulfate-thiol sulfurtransferase activity
Cellular Component
- cytoplasm
- cytosol
- cytoplasmic ribonucleoprotein granule
- perinuclear region of cytoplasm
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000423014
- Coding exons
- 4
- Length
- 1360
- Individuals with no LoFs
- 0
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 0
- Defined
- 0
- p
- 0.00
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.823 | 54 | 73.9 | 0.731 | 0.00000478 | 720 |
| Missense (PolyPhen) | 11 | 24.149 | 0.45551 | 244 | ||
| Synonymous | 0.375 | 27 | 29.6 | 0.912 | 0.00000184 | 237 |
| Loss of Function | 1.62 | 1 | 4.84 | 0.206 | 2.04e-7 | 62 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0 | 0.0 | absent |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Thiosulfate:glutathione sulfurtransferase (TST) required to produce S-sulfanylglutathione (GSS(-)), a central intermediate in hydrogen sulfide metabolism (PubMed:24981631). Provides the link between the first step in mammalian H(2)S metabolism performed by the sulfide:quinone oxidoreductase (SQOR) which catalyzes the conversion of H(2)S to thiosulfate, and the sulfur dioxygenase (SDO) which uses GSS(-) as substrate (PubMed:24981631). The thermodynamic coupling of the irreversible SDO and reversible TST reactions provides a model for the physiologically relevant reaction with thiosulfate as the sulfane donor (PubMed:24981631). {ECO:0000269|PubMed:24981631}.;
Intolerance Scores
- RVIS EVS
- 0.3
- RVIS percentile EVS
- 71.81
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.231
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |