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Gene

SMIM20

small integral membrane protein 20

Summary

Cytogenetic location
4p15.2
Coordinates
Chromosome 4: 25,914,220–25,929,812 (GRCh38)
Exons
3 exons across 15.6 kb
Protein
67 amino acids
Also known as
PNX, MITRAC7
Previous symbols
C4orf52
MANE Select transcript
ENST00000506197.3NM_001145432.3
Locus type
gene with protein product
  • Very high
  • Confident
  • Low
  • Very low

Reference genomeGRCh38

Positions on gene and variant pages follow this choice, in this browser.

Curated reports relevant to this gene

No Genome Test report reads SMIM20 yet. The test sequences your whole genome, so your data includes it all the same.

How SMIM20 is laid out

  • Coding sequence
  • Untranslated region
  • Intron
  • Direction of transcription
  • Stretches short reads find hard
Chromosome 4, with a bracket where SMIM20 sits. SMIM20 and 3 genes near it on chromosome 4, from 25,422,016 to 26,422,015.Chromosome 44p15.2p16.3p16.2p16.1p15.33p15.32p15.31p15.2p15.1p14p13p12p11q11q12q13.1q13.2q13.3q21.1q21.21q21.22q21.23q21.3q22.1q22.2q22.3q23q24q25q26q27q28.1q28.2q28.3q31.1q31.21q31.22q31.23q31.3q32.1q32.2q32.3q33q34.1q34.2q34.3q35.1q35.225.6 Mb25.8 Mb26 Mb26.2 Mb26.4 MbSLC34A2: 25,648,011–25,679,132, forward strandSLC34A2SEL1L3: 25,713,965–25,863,760, reverse strandSEL1L3SMIM20: 25,914,220–25,929,812, forward strandSMIM20RBPJ: 26,163,455–26,435,131, forward strandRBPJDiagram of SMIM20: 3 exons on the forward strand of chromosome 4Exon 1: 25,914,220–25,914,422, 203 basesExon 2: 25,928,313–25,928,369, 57 basesExon 3: 25,929,154–25,929,812, 659 bases1235′3′

Exons of the gene's MANE Select transcript (release v1.5), from NCBI and EMBL-EBI, on the GRCh38 reference genome.

Chromosome bands from UCSC's GRCh38 ideogram (2022-10-29).

Nearby genes from Ensembl release 116, on GRCh38.

Exons make up 0.9 kb of the gene's 15.6 kb; 204 of those bases code for the protein.

Where this comes from

  • HGNC: the gene's symbol, name, other symbols and location.
  • MANE Select v1.5, from NCBI and EMBL-EBI: the transcript, its exons and coding sequence.

Cite this page

APA

Dante Labs. (n.d.). SMIM20 gene: small integral membrane protein 20. Retrieved 17 October 2026, from https://dantelabs.com/genes/smim20

Vancouver

Dante Labs. SMIM20 gene: small integral membrane protein 20 [Internet]. [cited 17 October 2026]. Available from: https://dantelabs.com/genes/smim20

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