Free for academic non-profit institutions. Other users need a Commercial license

Aliases for SNX21 Gene

Aliases for SNX21 Gene

  • Sorting Nexin Family Member 21 2 3 5
  • Sorting Nexin L 3 4
  • C20orf161 3 4
  • SNX-L 3 4
  • Chromosome 20 Open Reading Frame 161 2
  • Sorting Nexin 21 3
  • DJ337O18.4 3
  • PP3993 3
  • SNXL 4

External Ids for SNX21 Gene

Previous HGNC Symbols for SNX21 Gene

  • C20orf161

Previous GeneCards Identifiers for SNX21 Gene

  • GC20P043896
  • GC20P044462
  • GC20P041204

Summaries for SNX21 Gene

Entrez Gene Summary for SNX21 Gene

  • This gene encodes a member of the sorting nexin family. Members of this family contain a phox (PX) domain, which is a phosphoinositide binding domain, and are involved in intracellular trafficking. This protein does not contain a coiled coil region, like some family members. The specific function of this protein has not been determined. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

GeneCards Summary for SNX21 Gene

SNX21 (Sorting Nexin Family Member 21) is a Protein Coding gene. GO annotations related to this gene include phosphatidylinositol binding. An important paralog of this gene is SNX20.

UniProtKB/Swiss-Prot for SNX21 Gene

  • Binds to membranes enriched in phosphatidylinositol 3-phosphate (PtdIns(P3)) and phosphatidylinositol 4,5-bisphosphate. May be involved in several stages of intracellular trafficking.

Gene Wiki entry for SNX21 Gene

No data available for Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for SNX21 Gene

Genomics for SNX21 Gene

Regulatory Elements for SNX21 Gene

Enhancers for SNX21 Gene
GeneHancer Identifier Score Enhancer Sources TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor Binding Sites within enhancer Other Gene Targets for Enhancer

Enhancers around SNX21 on UCSC Golden Path with GeneCards custom track

Promoters for SNX21 Gene
Ensembl Regulatory Elements (ENSRs) TSS Distance (bp) Size (bp) Binding Sites for Transcription Factors within promoters

ENSRs around SNX21 on UCSC Golden Path with GeneCards custom track

Genomic Location for SNX21 Gene

45,833,622 bp from pter
45,843,275 bp from pter
9,654 bases
Plus strand

Genomic View for SNX21 Gene

Genes around SNX21 on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
SNX21 Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for SNX21 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for SNX21 Gene

Proteins for SNX21 Gene

  • Protein details for SNX21 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Sorting nexin-21
    Protein Accession:
    Secondary Accessions:
    • Q5JZH5
    • Q5JZH6
    • Q5JZH7
    • Q8WUR6
    • Q9BR16

    Protein attributes for SNX21 Gene

    373 amino acids
    Molecular mass:
    41365 Da
    Quaternary structure:
    • Monomer.

    Alternative splice isoforms for SNX21 Gene


neXtProt entry for SNX21 Gene

Proteomics data for SNX21 Gene at MOPED

Post-translational modifications for SNX21 Gene

  • Modification sites at PhosphoSitePlus
  • Modification sites at neXtProt

No data available for DME Specific Peptides for SNX21 Gene

Domains & Families for SNX21 Gene

Protein Domains for SNX21 Gene


Graphical View of Domain Structure for InterPro Entry



  • The PX domain mediates specific binding to membranes enriched in phosphatidylinositol 3-phosphate (PtdIns(P3)).
  • Belongs to the sorting nexin family.
  • The PX domain mediates specific binding to membranes enriched in phosphatidylinositol 3-phosphate (PtdIns(P3)).
  • Contains 1 PX (phox homology) domain.
  • Belongs to the sorting nexin family.
genes like me logo Genes that share domains with SNX21: view

Function for SNX21 Gene

Molecular function for SNX21 Gene

UniProtKB/Swiss-Prot Function:
Binds to membranes enriched in phosphatidylinositol 3-phosphate (PtdIns(P3)) and phosphatidylinositol 4,5-bisphosphate. May be involved in several stages of intracellular trafficking.

Gene Ontology (GO) - Molecular Function for SNX21 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0032266 phosphatidylinositol-3-phosphate binding ISS --
GO:0035091 phosphatidylinositol binding IEA --
genes like me logo Genes that share ontologies with SNX21: view
genes like me logo Genes that share phenotypes with SNX21: view

Animal Model Products

Flow Cytometry Products

No data available for Enzyme Numbers (IUBMB) , Human Phenotype Ontology , Animal Models , miRNA , Transcription Factor Targets and HOMER Transcription for SNX21 Gene

Localization for SNX21 Gene

Subcellular locations from UniProtKB/Swiss-Prot for SNX21 Gene

Cytoplasmic vesicle membrane; Peripheral membrane protein; Cytoplasmic side. Early endosome membrane; Peripheral membrane protein; Cytoplasmic side.

Subcellular locations from

Jensen Localization Image for SNX21 Gene COMPARTMENTS Subcellular localization image for SNX21 gene
Compartment Confidence
endosome 5
cytosol 3
cytoskeleton 2
nucleus 2
mitochondrion 1

No data available for Gene Ontology (GO) - Cellular Components for SNX21 Gene

Pathways & Interactions for SNX21 Gene

SuperPathways for SNX21 Gene

No Data Available

Interacting Proteins for SNX21 Gene

STRING Interaction Network Preview (showing 1 interactants - click image to see details)
Selected Interacting proteins: ENSP00000418593 for SNX21 Gene via STRING

Symbol External ID(s) Details

Gene Ontology (GO) - Biological Process for SNX21 Gene


No data available for Pathways by source and SIGNOR curated interactions for SNX21 Gene

Drugs & Compounds for SNX21 Gene

No Compound Related Data Available

Transcripts for SNX21 Gene

Unigene Clusters for SNX21 Gene

Sorting nexin family member 21:
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for SNX21 Gene

ExUns: 1a · 1b · 1c ^ 2 ^ 3 ^ 4a · 4b · 4c ^ 5 ^ 6 ^ 7a · 7b · 7c
SP1: - -
SP2: - - -
SP3: -
SP4: - -
SP6: -
SP7: - - - - -
SP8: -

Relevant External Links for SNX21 Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for SNX21 Gene

mRNA expression in normal human tissues for SNX21 Gene

Protein differential expression in normal tissues from HIPED for SNX21 Gene

This gene is overexpressed in Pancreatic juice (35.5), Fetal heart (10.9), and Fetal testis (8.2).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MOPED, and MaxQB for SNX21 Gene

SOURCE GeneReport for Unigene cluster for SNX21 Gene Hs.472854

mRNA Expression by UniProt/SwissProt for SNX21 Gene

Tissue specificity: Highly expressed in fetus liver, but only weakly expressed in brain, skeleton muscle, smooth muscle, and cardiac muscle, kidney, and adrenal gland.
genes like me logo Genes that share expression patterns with SNX21: view

Protein tissue co-expression partners for SNX21 Gene

Primer Products

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery and mRNA differential expression in normal tissues for SNX21 Gene

Orthologs for SNX21 Gene

This gene was present in the common ancestor of animals.

Orthologs for SNX21 Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia SNX21 35
  • 89.14 (n)
  • 93.58 (a)
(Canis familiaris)
Mammalia SNX21 35
  • 90.75 (n)
  • 93.41 (a)
SNX21 36
  • 93 (a)
(Mus musculus)
Mammalia Snx21 35
  • 88.15 (n)
  • 93.94 (a)
Snx21 16
Snx21 36
  • 94 (a)
(Pan troglodytes)
Mammalia SNX21 35
  • 99.28 (n)
  • 98.38 (a)
SNX21 36
  • 99 (a)
(Rattus norvegicus)
Mammalia Snx21 35
  • 88.26 (n)
  • 95.45 (a)
(Monodelphis domestica)
Mammalia SNX21 36
  • 75 (a)
(Gallus gallus)
Aves SNX21 35
  • 70.59 (n)
  • 62.65 (a)
SNX21 36
  • 54 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia snx21 35
  • 54.94 (n)
  • 52.03 (a)
(Danio rerio)
Actinopterygii snx21 35
  • 52.45 (n)
  • 46.54 (a)
snx21 36
  • 41 (a)
African malaria mosquito
(Anopheles gambiae)
Insecta AgaP_AGAP009095 35
  • 43.29 (n)
  • 32.58 (a)
fruit fly
(Drosophila melanogaster)
Insecta CG3077 35
  • 44.93 (n)
  • 32.97 (a)
CG3077 36
  • 25 (a)
Species with no ortholog for SNX21:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • lizard (Anolis carolinensis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for SNX21 Gene

Gene Tree for SNX21 (if available)
Gene Tree for SNX21 (if available)

Paralogs for SNX21 Gene

Paralogs for SNX21 Gene

(2) SIMAP similar genes for SNX21 Gene using alignment to 4 proteins:

genes like me logo Genes that share paralogs with SNX21: view

Variants for SNX21 Gene

Sequence variations from dbSNP and Humsavar for SNX21 Gene

SNP ID Clin Chr 20 pos Sequence Context AA Info Type
rs4638862 - 45,840,651(+) CCCTC(A/G)CCGTG reference, synonymous-codon, missense, utr-variant-3-prime
rs197669 -- 45,840,292(+) TTGGC(C/T)GGGGT intron-variant, utr-variant-5-prime
rs197670 -- 45,839,873(-) ggagt(A/G)cactg intron-variant, utr-variant-5-prime
rs453287 -- 45,840,743(+) CAGCG(C/G)CAATT downstream-variant-500B, reference, synonymous-codon, utr-variant-3-prime
rs4337538 -- 45,837,631(+) GGGGA(A/G)CTTCG intron-variant

Structural Variations from Database of Genomic Variants (DGV) for SNX21 Gene

Variant ID Type Subtype PubMed ID
nsv833990 CNV Loss 17160897
nsv458993 CNV Loss 19166990

Variation tolerance for SNX21 Gene

Residual Variation Intolerance Score: 84.8% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 10.95; 91.96% of all genes are more intolerant (likely to be disease-causing)

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot and Relevant External Links for SNX21 Gene

Disorders for SNX21 Gene

Relevant External Links for SNX21

Atlas of Genetics and Cytogenetics in Oncology and Haematology:

No disorders were found for SNX21 Gene.

No data available for MalaCards , UniProtKB/Swiss-Prot and Genatlas for SNX21 Gene

Publications for SNX21 Gene

  1. Expression of a novel member of sorting nexin gene family, SNX-L, in human liver development. (PMID: 12459172) Zeng W. … Liu M. (Biochem. Biophys. Res. Commun. 2002) 2 3 4 23 67
  2. Sorting out the cellular functions of sorting nexins. (PMID: 12461558) Worby C.A. … Dixon J.E. (Nat. Rev. Mol. Cell Biol. 2002) 2 3
  3. Widespread Expansion of Protein Interaction Capabilities by Alternative Splicing. (PMID: 26871637) Yang X. … Vidal M. (Cell 2016) 3
  4. A deep proteomics perspective on CRM1-mediated nuclear export and nucleocytoplasmic partitioning. (PMID: 26673895) KA+rlA+ K. … GAPrlich D. (Elife 2015) 3
  5. Interactions of pathological hallmark proteins: tubulin polymerization promoting protein/p25, beta-amyloid, and alpha-synuclein. (PMID: 21832049) OlA!h J. … OvA!di J. (J. Biol. Chem. 2011) 3

Products for SNX21 Gene

Sources for SNX21 Gene