SPRR2E
protein-codingsmall proline rich protein 2E, the group of Small proline rich proteins
Gene summary
This gene encodes a member of a family of small proline-rich proteins clustered in the epidermal differentiation complex on chromosome 1q21. The encoded protein, along with other family members, is a component of the cornified cell envelope that forms beneath the plasma membrane in terminally differentiated stratified squamous epithelia. This envelope serves as a barrier against extracellular and environmental factors. The seven SPRR2 genes (A-G) appear to have been homogenized by gene conversion compared to others in the cluster that exhibit greater differences in protein structure. [provided by RefSeq, Feb 2014]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~13.0 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 SPRR2E variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001024209.4. 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 | 13 | 13 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 0 | |||||
| Total | 0 | 0 | 13 | 0 | 0 | 13 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001019380.2 | 1 | MANE Select | |
| Ensembl | ENSP00000357739.3 | 1 | MANE Select | |
| Ensembl | ENSP00000357740.1 | 1 | Standard | |
| Ensembl | ENSP00000766631.1 | 1 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Keratinization
- Developmental Biology
- Formation of the cornified envelope
Biological Process
- epidermis development
- peptide cross-linking
- keratinocyte differentiation
- cornification
Molecular Function
- structural molecule activity
- protein binding
- structural constituent of epidermis
Cellular Component
- cornified envelope
- cytoplasm
- cytosol
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000368751
- Coding exons
- 1
- Length
- 13050
- Individuals with no LoFs
- 124834
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 5
- Defined
- 124839
- p
- 0.0000200
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | -0.319 | 43 | 37.5 | 1.15 | 0.00000169 | 452 |
| Missense (PolyPhen) | ||||||
| Synonymous | -0.0171 | 15 | 14.9 | 1.01 | 7.91e-7 | 135 |
| Loss of Function | -1.47 | 1 | 0.234 | 4.27 | 9.82e-9 | 3 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0.00012 | 0.00012 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.0000089 | 0.0000089 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Cross-linked envelope protein of keratinocytes. It is a keratinocyte protein that first appears in the cell cytosol, but ultimately becomes cross-linked to membrane proteins by transglutaminase. All that results in the formation of an insoluble envelope beneath the plasma membrane.;
Intolerance Scores
- LoFtool
- 0.775
- RVIS EVS
- 0.24
- RVIS percentile EVS
- 68.72
Essentials
- Essential (CRISPR)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.000347
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |