SEMG1
protein-codingsemenogelin 1
Gene summary
The protein encoded by this gene is the predominant protein in semen. The encoded secreted protein is involved in the formation of a gel matrix that encases ejaculated spermatozoa. This preproprotein is proteolytically processed by the prostate-specific antigen (PSA) protease to generate multiple peptide products that exhibit distinct functions. One of these peptides, SgI-29, is an antimicrobial peptide with antibacterial activity. This proteolysis process also breaks down the gel matrix and allows the spermatozoa to move more freely. This gene and another similar semenogelin gene are present in a gene cluster on chromosome 20. [provided by RefSeq, Feb 2016]
- SEMG
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~2.7 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 SEMG1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_003007.5. 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 | 71 | 4 | 75 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 72 | 4 | 0 | 76 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_002998.1 | 2 | MANE Select | |
| Ensembl | ENSP00000361867.3 | 2 | MANE Select | |
| Ensembl | ENSP00000592753.1 | 2 | Standard | |
| Ensembl | ENSP00000592753.1 | 2 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Antimicrobial peptides
- Innate Immune System
- Immune System
Biological Process
- insemination
- antimicrobial humoral response
- antibacterial humoral response
- killing of cells of other organism
- cellular protein metabolic process
Molecular Function
- protein binding
- zinc ion binding
Cellular Component
- extracellular region
- extracellular space
- nucleus
- protein-containing complex
- extracellular exosome
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000372781
- Coding exons
- 2
- Length
- 2776
- Individuals with no LoFs
- 125675
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 2
- Defined
- 125677
- p
- 0.00000796
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | -0.570 | 265 | 240 | 1.10 | 0.0000118 | 3055 |
| Missense (PolyPhen) | 109 | 103.67 | 1.0514 | 1449 | ||
| Synonymous | -1.79 | 108 | 86.8 | 1.24 | 0.00000417 | 839 |
| Loss of Function | 1.55 | 1 | 4.59 | 0.218 | 2.81e-7 | 44 |
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 | 0.000055 | 0.000054 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.0000088 | 0.0000088 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Predominant protein in semen. It participates in the formation of a gel matrix entrapping the accessory gland secretions and ejaculated spermatozoa. Fragments of semenogelin and/or fragments of the related proteins may contribute to the activation of progressive sperm movements as the gel-forming proteins are fragmented by KLK3/PSA. {ECO:0000269|PubMed:19889947}.;
Recessive Scores
- pRec
- 0.110
Intolerance Scores
- LoFtool
- 0.946
- RVIS EVS
- 0.89
- RVIS percentile EVS
- 89.24
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.279
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |