SNX2
protein-codingsorting nexin 2, the group of PX-BAR domain containing|Sorting nexins
Gene summary
This gene belongs to the sorting nexin family whose members contain the phosphoinositide-binding phox (PX) domain. The encoded protein is a component of the retromer complex which plays a role in protein sorting in the endocytic pathway. This protein may form oligomeric complexes with other family members. Alternate splicing results in multiple transcript variants of this gene. Pseudogenes associated with this gene are located on chromosomes 1 and 7. [provided by RefSeq, May 2013]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~59.5 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 SNX2 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_003100.4. 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 | 3 | 3 | ||||
| missense | 57 | 57 | ||||
| nonsense | 1 | 1 | ||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 7 | 7 | ||||
| Total | 0 | 0 | 68 | 0 | 0 | 68 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_003091.2 | 15 | MANE Select | |
| Ensembl | ENSP00000368831.2 | 15 | MANE Select | |
| RefSeq | NP_001265128.1 | 13 | Standard | |
| Ensembl | ENSP00000422413.1 | 8 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Endocytosis - Homo sapiens (human)
- Golgi Associated Vesicle Biogenesis
- Clathrin derived vesicle budding
- trans-Golgi Network Vesicle Budding
- Vesicle-mediated transport
Biological Process
- intracellular protein transport
- endocytosis
- early endosome to Golgi transport
- retrograde transport, endosome to Golgi
- protein complex oligomerization
Molecular Function
- epidermal growth factor receptor binding
- insulin receptor binding
- protein binding
- phosphatidylinositol binding
- protein homodimerization activity
Cellular Component
- cytoplasm
- lysosome
- endosome
- cytosol
- endosome membrane
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000379516
- Coding exons
- 15
- Length
- 55113
- Individuals with no LoFs
- 125720
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 14
- Defined
- 125734
- p
- 0.0000557
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.596 | 238 | 265 | 0.897 | 0.0000126 | 3417 |
| Missense (PolyPhen) | 94 | 99.337 | 0.94627 | 1310 | ||
| Synonymous | -0.500 | 96 | 90.0 | 1.07 | 0.00000467 | 944 |
| Loss of Function | 4.43 | 4 | 30.3 | 0.132 | 0.00000152 | 383 |
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 | 0.000054 | 0.000054 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000098 | 0.000097 | rare |
| South Asian | 0.000066 | 0.000065 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Involved in several stages of intracellular trafficking. Interacts with membranes containing phosphatidylinositol 3- phosphate (PtdIns(3P)) or phosphatidylinositol 3,5-bisphosphate (PtdIns(3,5)P2) (PubMed:16179610). Acts in part as component of the retromer membrane-deforming SNX-BAR subcomplex (PubMed:17101778). The SNX-BAR retromer mediates retrograde transport of cargo proteins from endosomes to the trans-Golgi network (TGN) and is involved in endosome-to-plasma membrane transport for cargo protein recycling. The SNX-BAR subcomplex functions to deform the donor membrane into a tubular profile called endosome-to-TGN transport carrier (ETC) (Probable). Can sense membrane curvature and has in vitro vesicle-to-membrane remodeling activity (PubMed:23085988). Required for retrograde endosome-to-TGN transport of TGN38 (PubMed:20138391). Promotes KALRN- and RHOG-dependent but retromer-independent membrane remodeling such as lamellipodium formation; the function is dependent on GEF activity of KALRN (PubMed:20604901). {ECO:0000269|PubMed:16179610, ECO:0000269|PubMed:17101778, ECO:0000269|PubMed:20138391, ECO:0000269|PubMed:20604901, ECO:0000269|PubMed:23085988, ECO:0000303|PubMed:16179610}.;
Recessive Scores
- pRec
- 0.132
Intolerance Scores
- LoFtool
- 0.370
- RVIS EVS
- -0.69
- RVIS percentile EVS
- 14.97
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- S
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.349
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |