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Gene

C21orf140

chromosome 21 open reading frame 140

Summary

Cytogenetic location
21q22.12
Coordinates
Chromosome 21: 34,400,112–34,401,072 (GRCh38)
Exons
1 exon across 1 kb
Protein
251 amino acids
Previous symbols
FAM243A
MANE Select transcript
ENST00000410005.2NM_001282537.2
Locus type
gene with protein product
  • Very high
  • Confident
  • Low
  • Very low

Curated reports relevant to this gene

No Genome Test report reads C21orf140 yet. The test sequences your whole genome, so your data includes it all the same.

How C21orf140 is laid out

  • Coding sequence
  • Untranslated region
  • Intron
  • Direction of transcription
  • Stretches short reads find hard
Chromosome 21, with a bracket where C21orf140 sits. C21orf140 and 13 genes near it on chromosome 21, from 33,900,592 to 34,900,591.Chromosome 2121q22.12p13p12p11.2p11.1q11.1q11.2q21.1q21.2q21.3q22.11q22.12q22.13q22.2q22.334 Mb34.2 Mb34.4 Mb34.6 Mb34.8 Mb: 33,584,687–33,931,607, reverse strandATP5PO: 33,901,027–33,915,853, reverse strandATP5POMRPS6: 34,072,889–34,362,252, forward strandMRPS6: 34,073,509–34,143,037, forward strandSLC5A3: 34,073,509–34,106,260, forward strandSLC5A3KCNE2: 34,180,729–34,371,390, forward strandKCNE2SMIM11: 34,375,107–34,416,961, forward strandSMIM11C21orf140: 34,400,112–34,401,072, reverse strandC21orf140SMIM34: 34,414,494–34,423,951, reverse strandSMIM34KCNE1: 34,446,688–34,512,214, reverse strandKCNE1: 34,511,122–34,614,913, reverse strandRCAN1: 34,513,142–34,615,323, reverse strandRCAN1CLIC6: 34,668,966–34,718,227, forward strandCLIC6RUNX1: 34,787,801–36,004,667, reverse strandRUNX1Diagram of C21orf140: one exon on the reverse strand of chromosome 21Exon 1: 34,400,112–34,401,072, 961 bases15′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 1 kb of the gene's 1 kb; 756 of those bases code for the protein.

External links

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.). C21orf140 gene: chromosome 21 open reading frame 140. Retrieved 17 October 2026, from https://dantelabs.com/genes/c21orf140

Vancouver

Dante Labs. C21orf140 gene: chromosome 21 open reading frame 140 [Internet]. [cited 17 October 2026]. Available from: https://dantelabs.com/genes/c21orf140

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