Upcoming Ensembl Platform Transition

This is the final release of its kind on this website.

In summer 2026, this site will bring you to the new Ensembl platform currently at beta.ensembl.org.
Please bookmark this archive to retain access to the current site, tools and functionality until they are available on the new platform -> jun2026.archive.ensembl.org

Mouse (GRCm39)
Description

immunoglobulin superfamily, member 21 [Source:MGI Symbol;Acc:MGI:2681842]

Gene Synonyms

LOC230868

Location

Chromosome 4: 139,754,157-139,974,226 reverse strand.

GRCm39:CM000997.3

About this gene

This gene has 16 transcripts (splice variants), 262 orthologues, 35 paralogues and is associated with 3 phenotypes.

Transcript IDNamebpProteinTranslation IDBiotypeCCDSUniProt MatchFlags
ENSMUST00000039331.10Igsf21-2012110468aaENSMUSP00000046558.9
 
Protein coding
CCDS18851Q7TNR6 Ensembl CanonicalGENCODE PrimaryGENCODE BasicAPPRIS P3TSL:1
ENSMUST00000444408.1Igsf21-2142146480aaENSMUSP00000222771.1
 
Protein coding
-GENCODE Basic
ENSMUST00000444398.1Igsf21-2042107467aaENSMUSP00000222761.1
 
Protein coding
-GENCODE BasicAPPRIS ALT1
ENSMUST00000552622.1Igsf21-2152089461aaENSMUSP00000330985.1
 
Protein coding
-GENCODE BasicAPPRIS ALT1
ENSMUST00000444396.1Igsf21-2021917396aaENSMUSP00000222759.1
 
Protein coding
-GENCODE Basic
ENSMUST00000573436.1Igsf21-2161519271aaENSMUSP00000351799.1
 
Protein coding
-GENCODE PrimaryGENCODE Basic
ENSMUST00000444403.1Igsf21-2091326199aaENSMUSP00000222766.1
 
Protein coding
-GENCODE Basic
ENSMUST00000444407.1Igsf21-213232339aaENSMUSP00000222770.1
 
Nonsense mediated decay
--
ENSMUST00000444404.1Igsf21-2101994112aaENSMUSP00000222767.1
 
Nonsense mediated decay
--
ENSMUST00000444400.1Igsf21-2061930339aaENSMUSP00000222763.1
 
Nonsense mediated decay
--
ENSMUST00000444397.1Igsf21-203191437aaENSMUSP00000222760.1
 
Nonsense mediated decay
--
ENSMUST00000444401.1Igsf21-2071897308aaENSMUSP00000222764.1
 
Nonsense mediated decay
--
ENSMUST00000444402.1Igsf21-208188673aaENSMUSP00000222765.1
 
Nonsense mediated decay
--
ENSMUST00000444405.1Igsf21-2111882182aaENSMUSP00000222768.1
 
Nonsense mediated decay
--
ENSMUST00000444406.1Igsf21-2121787277aaENSMUSP00000222769.1
 
Nonsense mediated decay
--
ENSMUST00000444399.1Igsf21-2051344142aaENSMUSP00000222762.1
 
Nonsense mediated decay
--