SMUG1
protein-codingsingle-strand-selective monofunctional uracil-DNA glycosylase 1, the group of DNA glycosylases
Gene summary
This gene encodes a protein that participates in base excision repair by removing uracil from single- and double-stranded DNA. Many alternatively spliced transcript variants exist for this gene; the full-length nature is known for some but not all of the variants. [provided by RefSeq, Aug 2011]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~67.7 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 SMUG1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001243787.2. 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 | 1 | 1 | ||||
| missense | 42 | 1 | 1 | 44 | ||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 1 | 1 | ||||
| Total | 0 | 0 | 44 | 1 | 1 | 46 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001230716.1 | 2 | MANE Select | |
| Ensembl | ENSP00000507590.1 | 2 | MANE Select | |
| RefSeq | NP_001230717.1 | 2 | Standard | |
| RefSeq | NP_001230718.1 | 3 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Fluoropyrimidine Pathway, Pharmacodynamics
- Base excision repair - Homo sapiens (human)
- Fluoropyrimidine Activity
- DNA Repair
- Recognition and association of DNA glycosylase with site containing an affected pyrimidine
Biological Process
- base-excision repair
- depyrimidination
Molecular Function
- oxidized pyrimidine nucleobase lesion DNA N-glycosylase activity
- DNA binding
- uracil DNA N-glycosylase activity
- protein binding
- single-strand selective uracil DNA N-glycosylase activity
Cellular Component
- nucleoplasm
- nucleolus
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000508394
- Coding exons
- 2
- Length
- 24250
- Individuals with no LoFs
- 125706
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 42
- Defined
- 125748
- p
- 0.000167
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.860 | 128 | 158 | 0.808 | 0.00000927 | 1708 |
| Missense (PolyPhen) | 51 | 64.493 | 0.79078 | 745 | ||
| Synonymous | 0.862 | 55 | 63.8 | 0.863 | 0.00000312 | 607 |
| Loss of Function | 1.37 | 7 | 12.2 | 0.575 | 9.75e-7 | 86 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.00025 | 0.00025 | rare |
| Latino/Admixed American | 0.00023 | 0.00023 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.000054 | 0.000054 | rare |
| Finnish | 0.00014 | 0.00014 | rare |
| European (Non-Finnish) | 0.00015 | 0.00015 | rare |
| South Asian | 0.00026 | 0.00026 | rare |
| Other | 0.00016 | 0.00016 | rare |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Recognizes base lesions in the genome and initiates base excision DNA repair. Acts as a monofunctional DNA glycosylase specific for uracil (U) residues in DNA with a preference for single-stranded DNA substrates. The activity is greater toward mismatches (U/G) compared to matches (U/A). Excises uracil (U), 5- formyluracil (fU) and uracil derivatives bearing an oxidized group at C5 [5-hydroxyuracil (hoU) and 5-hydroxymethyluracil (hmU)] in ssDNA and dsDNA, but not analogous cytosine derivatives (5- hydroxycytosine and 5-formylcytosine), nor other oxidized bases. The activity is damage-specific and salt-dependent. The substrate preference is the following: ssDNA > dsDNA (G pair) = dsDNA (A pair) at low salt concentration, and dsDNA (G pair) > dsDNA (A pair) > ssDNA at high salt concentration. {ECO:0000269|PubMed:10074426, ECO:0000269|PubMed:11526119, ECO:0000269|PubMed:12161446, ECO:0000269|PubMed:12718543}.;
Recessive Scores
- pRec
- 0.174
Intolerance Scores
- LoFtool
- 0.790
- RVIS EVS
- 0.08
- RVIS percentile EVS
- 60.09
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.992
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |