Incidental Mutation 'A4554:Kel'
ID 99
Institutional Source Beutler Lab
Gene Symbol Kel
Ensembl Gene ENSMUSG00000029866
Gene Name Kell blood group
Synonyms CD238
Accession Numbers
Essential gene? Probably non essential (E-score: 0.088) question?
Stock # A4554 of strain gemini
Quality Score
Status Validated
Chromosome 6
Chromosomal Location 41663263-41681268 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 41674353 bp (GRCm39)
Zygosity Homozygous
Amino Acid Change Aspartic acid to Valine at position 359 (D359V)
Ref Sequence ENSEMBL: ENSMUSP00000031899 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000031899]
AlphaFold Q9EQF2
Predicted Effect possibly damaging
Transcript: ENSMUST00000031899
AA Change: D359V

PolyPhen 2 Score 0.948 (Sensitivity: 0.79; Specificity: 0.95)
SMART Domains Protein: ENSMUSP00000031899
Gene: ENSMUSG00000029866
AA Change: D359V

DomainStartEndE-ValueType
transmembrane domain 28 50 N/A INTRINSIC
Pfam:Peptidase_M13_N 81 463 1.5e-68 PFAM
Pfam:Peptidase_M13 521 712 2.1e-58 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000192118
Predicted Effect noncoding transcript
Transcript: ENSMUST00000192406
Meta Mutation Damage Score 0.2232 question?
Coding Region Coverage
  • 1x: 85.5%
  • 3x: 63.0%
Validation Efficiency 84% (92/109)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a type II transmembrane glycoprotein that is the highly polymorphic Kell blood group antigen. The Kell glycoprotein links via a single disulfide bond to the XK membrane protein that carries the Kx antigen. The encoded protein contains sequence and structural similarity to members of the neprilysin (M13) family of zinc endopeptidases. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygous for a null allele exhibit decreased heart rate, altered hematological parameters and ECG waveform features, decreased erythrocyte Mg2+ and K+ ion content, mild motor deficits, and giant axon changes with varying degrees of paranodal demyelination in the spinal cord and sciatic nerve. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 18 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Asap1 T C 15: 63,996,560 (GRCm39) probably benign Het
Bpifb5 A T 2: 154,069,100 (GRCm39) Y139F possibly damaging Homo
Chd2 A C 7: 73,130,716 (GRCm39) V782G probably benign Homo
Chst4 G T 8: 110,756,520 (GRCm39) Q448K probably benign Homo
Dido1 T C 2: 180,317,164 (GRCm39) K8E probably damaging Homo
Evpl A G 11: 116,111,660 (GRCm39) L2010P probably damaging Homo
Fgl2 A G 5: 21,577,776 (GRCm39) E21G probably benign Homo
Greb1l A T 18: 10,532,862 (GRCm39) M919L possibly damaging Homo
Lmtk2 A G 5: 144,103,135 (GRCm39) D298G possibly damaging Homo
Masp1 A T 16: 23,273,690 (GRCm39) probably null Homo
Mrgprb8 A T 7: 48,039,156 (GRCm39) I276F probably damaging Homo
Nde1 T C 16: 14,006,274 (GRCm39) probably benign Homo
Rbck1 G T 2: 152,161,092 (GRCm39) N385K probably damaging Homo
Senp6 G T 9: 80,055,740 (GRCm39) probably benign Het
Tm4sf4 T A 3: 57,345,188 (GRCm39) probably null Homo
Ubn2 A T 6: 38,461,045 (GRCm39) H488L probably damaging Homo
Vmn2r120 A G 17: 57,832,715 (GRCm39) F155L probably benign Homo
Vmn2r65 T A 7: 84,595,791 (GRCm39) T298S probably damaging Homo
Other mutations in Kel
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00743:Kel APN 6 41,665,509 (GRCm39) missense probably damaging 1.00
IGL00792:Kel APN 6 41,678,946 (GRCm39) missense probably damaging 1.00
IGL00972:Kel APN 6 41,665,000 (GRCm39) missense possibly damaging 0.62
IGL01121:Kel APN 6 41,679,343 (GRCm39) missense probably benign 0.00
IGL01286:Kel APN 6 41,665,051 (GRCm39) splice site probably null
IGL01461:Kel APN 6 41,678,845 (GRCm39) critical splice donor site probably null
IGL01836:Kel APN 6 41,674,372 (GRCm39) missense possibly damaging 0.50
IGL02037:Kel APN 6 41,674,408 (GRCm39) missense probably benign 0.01
IGL02103:Kel APN 6 41,679,323 (GRCm39) missense probably benign 0.18
IGL02604:Kel APN 6 41,664,516 (GRCm39) missense probably damaging 0.98
IGL03102:Kel APN 6 41,679,917 (GRCm39) missense probably benign 0.00
IGL03274:Kel APN 6 41,664,929 (GRCm39) splice site probably null
IGL03355:Kel APN 6 41,675,821 (GRCm39) critical splice donor site probably null
R0121:Kel UTSW 6 41,678,998 (GRCm39) unclassified probably benign
R0153:Kel UTSW 6 41,678,877 (GRCm39) missense probably benign 0.08
R0535:Kel UTSW 6 41,667,772 (GRCm39) missense probably null 0.21
R0658:Kel UTSW 6 41,679,965 (GRCm39) missense probably damaging 1.00
R1005:Kel UTSW 6 41,665,551 (GRCm39) missense probably damaging 1.00
R1199:Kel UTSW 6 41,665,525 (GRCm39) missense possibly damaging 0.95
R1272:Kel UTSW 6 41,680,404 (GRCm39) missense probably benign 0.00
R1531:Kel UTSW 6 41,665,560 (GRCm39) missense probably damaging 0.99
R1880:Kel UTSW 6 41,664,479 (GRCm39) missense possibly damaging 0.95
R2102:Kel UTSW 6 41,663,418 (GRCm39) missense possibly damaging 0.86
R2118:Kel UTSW 6 41,666,234 (GRCm39) missense probably benign
R2571:Kel UTSW 6 41,665,001 (GRCm39) missense possibly damaging 0.62
R4209:Kel UTSW 6 41,675,359 (GRCm39) nonsense probably null
R4210:Kel UTSW 6 41,675,359 (GRCm39) nonsense probably null
R4260:Kel UTSW 6 41,663,357 (GRCm39) utr 3 prime probably benign
R4382:Kel UTSW 6 41,675,334 (GRCm39) missense probably benign 0.13
R5023:Kel UTSW 6 41,665,045 (GRCm39) missense probably damaging 1.00
R5033:Kel UTSW 6 41,675,989 (GRCm39) missense probably damaging 1.00
R5239:Kel UTSW 6 41,665,048 (GRCm39) nonsense probably null
R5431:Kel UTSW 6 41,675,354 (GRCm39) missense probably benign 0.23
R5742:Kel UTSW 6 41,675,961 (GRCm39) missense probably damaging 1.00
R5745:Kel UTSW 6 41,675,961 (GRCm39) missense probably damaging 1.00
R5746:Kel UTSW 6 41,675,961 (GRCm39) missense probably damaging 1.00
R5978:Kel UTSW 6 41,664,979 (GRCm39) missense probably benign 0.00
R6023:Kel UTSW 6 41,674,409 (GRCm39) missense probably benign
R6109:Kel UTSW 6 41,665,796 (GRCm39) missense probably benign 0.06
R6125:Kel UTSW 6 41,667,720 (GRCm39) missense probably damaging 1.00
R6319:Kel UTSW 6 41,679,381 (GRCm39) missense probably benign 0.05
R6368:Kel UTSW 6 41,665,785 (GRCm39) nonsense probably null
R6864:Kel UTSW 6 41,680,694 (GRCm39) critical splice donor site probably null
R6956:Kel UTSW 6 41,664,907 (GRCm39) missense probably damaging 1.00
R7644:Kel UTSW 6 41,667,742 (GRCm39) missense probably benign 0.03
R7938:Kel UTSW 6 41,675,310 (GRCm39) missense probably benign 0.06
R8028:Kel UTSW 6 41,675,958 (GRCm39) missense probably benign 0.21
R8082:Kel UTSW 6 41,680,424 (GRCm39) missense possibly damaging 0.94
R8465:Kel UTSW 6 41,666,472 (GRCm39) critical splice donor site probably null
R9158:Kel UTSW 6 41,664,905 (GRCm39) missense probably benign 0.10
R9518:Kel UTSW 6 41,679,334 (GRCm39) missense probably damaging 1.00
R9726:Kel UTSW 6 41,678,971 (GRCm39) missense probably damaging 1.00
R9769:Kel UTSW 6 41,678,990 (GRCm39) missense probably damaging 1.00
X0028:Kel UTSW 6 41,675,285 (GRCm39) missense probably damaging 0.99
Z1176:Kel UTSW 6 41,664,506 (GRCm39) missense probably damaging 1.00
Z1177:Kel UTSW 6 41,666,493 (GRCm39) missense probably benign
Nature of Mutation
DNA sequencing using the SOLiD technique identified an A to T transversion at position 1333 of the Kel transcript in exon 10of 19 total exons. Three transcripts of the Kel gene are displayed on Ensembl. The mutated nucleotide causes an aspartic acid to valine substitution at amino acid 359 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).
Protein Function and Prediction
The Kel gene encodes a 713 amino acid single-pass type II membrane protein known as CD238 that belongs to the peptidase M13 family. CD238 is a zinc endopeptidase with endothelin-3-converting enzyme activity. It is highly expressed in the spleen with weaker expression in the testis and heart, spans the erythrocyte membrane, and is attached to the underlying cytoskeleton (Uniprot Q9EQF2).  
 
The D359V change occurs in the extracellular domain and is predicted to be probably damaging by the PolyPhen program.
Posted On 2010-03-16