Incidental Mutation 'F2404:Epha3'
ID170
Institutional Source Beutler Lab
Gene Symbol Epha3
Ensembl Gene ENSMUSG00000052504
Gene NameEph receptor A3
SynonymsTyro4, End3, Cek4, Hek, Hek4, Mek4
Accession Numbers

Genbank: NM_010140; MGI: 99612

Is this an essential gene? Possibly non essential (E-score: 0.417) question?
Stock #F2404 of strain feckless
Quality Score
Status Validated
Chromosome16
Chromosomal Location63543534-63864175 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 63546168 bp
ZygosityHeterozygous
Amino Acid Change Leucine to Proline at position 972 (L972P)
Ref Sequence ENSEMBL: ENSMUSP00000155946 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000064405] [ENSMUST00000232049]
Predicted Effect probably benign
Transcript: ENSMUST00000064405
AA Change: L973P

PolyPhen 2 Score 0.008 (Sensitivity: 0.96; Specificity: 0.76)
SMART Domains Protein: ENSMUSP00000066554
Gene: ENSMUSG00000052504
AA Change: L973P

DomainStartEndE-ValueType
signal peptide 1 20 N/A INTRINSIC
EPH_lbd 29 202 1.76e-127 SMART
Pfam:GCC2_GCC3 263 306 6.6e-9 PFAM
FN3 326 418 1.14e-5 SMART
FN3 437 518 4.8e-13 SMART
Pfam:EphA2_TM 543 619 8.2e-25 PFAM
TyrKc 622 879 5.16e-140 SMART
SAM 909 976 1.08e-13 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000232049
AA Change: L972P

PolyPhen 2 Score 0.136 (Sensitivity: 0.92; Specificity: 0.86)
Meta Mutation Damage Score 0.1660 question?
Coding Region Coverage
  • 1x: 87.2%
  • 3x: 68.2%
Validation Efficiency 89% (81/91)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family. EPH and EPH-related receptors have been implicated in mediating developmental events, particularly in the nervous system. Receptors in the EPH subfamily typically have a single kinase domain and an extracellular region containing a Cys-rich domain and 2 fibronectin type III repeats. The ephrin receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. This gene encodes a protein that binds ephrin-A ligands. Two alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygous for disruptions in this gene usually die within 48 hours of birth of cardiac failure. Survivors develop normally with no indications of cardiac abnormalities. [provided by MGI curators]
Allele List at MGI

All alleles(3) : Targeted, knock-out(1) Gene trapped(2)

Other mutations in this stock
Total: 8 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abhd18 T G 3: 40,933,878 C386G probably damaging Het
AC091683.1 G A 13: 49,900,492 noncoding transcript Het
Adgrv1 G A 13: 81,420,006 T5016M probably benign Het
BC005561 T A 5: 104,520,230 W873R possibly damaging Homo
Gpm6a G A 8: 55,058,882 D264N probably damaging Het
H1fnt T A 15: 98,257,209 I20F possibly damaging Het
Pvr A T 7: 19,905,177 S393T probably benign Het
Rsbn1 T A 3: 103,914,576 C3* probably null Het
Other mutations in Epha3
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00773:Epha3 APN 16 63566684 missense probably damaging 1.00
IGL01358:Epha3 APN 16 63595746 splice site probably benign
IGL01713:Epha3 APN 16 63552562 missense probably benign 0.00
IGL02371:Epha3 APN 16 63585020 critical splice acceptor site probably null
IGL03111:Epha3 APN 16 63653446 missense probably damaging 0.98
IGL03208:Epha3 APN 16 63611089 missense probably damaging 1.00
laterality UTSW 16 63568399 missense probably damaging 1.00
midline UTSW 16 63844144 missense possibly damaging 0.46
stride UTSW 16 63552494 missense probably benign 0.00
P0041:Epha3 UTSW 16 63612868 missense probably damaging 1.00
PIT4498001:Epha3 UTSW 16 63552526 missense probably damaging 1.00
PIT4585001:Epha3 UTSW 16 63566577 critical splice donor site probably null
R0147:Epha3 UTSW 16 63612944 missense possibly damaging 0.89
R0148:Epha3 UTSW 16 63612944 missense possibly damaging 0.89
R0336:Epha3 UTSW 16 63566648 missense probably damaging 1.00
R0738:Epha3 UTSW 16 63595612 missense probably damaging 1.00
R0833:Epha3 UTSW 16 63603519 splice site probably benign
R0836:Epha3 UTSW 16 63603519 splice site probably benign
R0969:Epha3 UTSW 16 63566636 missense probably damaging 1.00
R1160:Epha3 UTSW 16 63773068 missense probably damaging 1.00
R1205:Epha3 UTSW 16 63598248 frame shift probably null
R1349:Epha3 UTSW 16 63611053 missense possibly damaging 0.89
R1372:Epha3 UTSW 16 63611053 missense possibly damaging 0.89
R1469:Epha3 UTSW 16 63653494 missense probably damaging 0.97
R1469:Epha3 UTSW 16 63653494 missense probably damaging 0.97
R1500:Epha3 UTSW 16 63595662 missense probably benign 0.06
R1523:Epha3 UTSW 16 63610948 missense probably damaging 0.99
R1532:Epha3 UTSW 16 63546178 missense probably benign 0.08
R1544:Epha3 UTSW 16 63773053 missense probably damaging 1.00
R1681:Epha3 UTSW 16 63595728 missense probably damaging 1.00
R1708:Epha3 UTSW 16 63583507 missense probably damaging 1.00
R1803:Epha3 UTSW 16 63602288 missense probably benign 0.00
R1893:Epha3 UTSW 16 63568399 missense probably damaging 1.00
R1957:Epha3 UTSW 16 63772952 missense probably benign 0.00
R2144:Epha3 UTSW 16 63773317 missense possibly damaging 0.86
R2190:Epha3 UTSW 16 63546189 missense probably benign 0.05
R2198:Epha3 UTSW 16 63844144 missense possibly damaging 0.46
R2344:Epha3 UTSW 16 63652383 missense possibly damaging 0.67
R2504:Epha3 UTSW 16 63603625 missense probably damaging 0.97
R2911:Epha3 UTSW 16 63652412 missense probably benign
R3889:Epha3 UTSW 16 63610964 missense probably damaging 1.00
R4223:Epha3 UTSW 16 63583539 missense probably damaging 0.99
R4836:Epha3 UTSW 16 63583557 missense probably damaging 1.00
R4981:Epha3 UTSW 16 63652412 missense probably benign 0.04
R5044:Epha3 UTSW 16 63602287 missense possibly damaging 0.79
R5195:Epha3 UTSW 16 63546147 missense possibly damaging 0.86
R5248:Epha3 UTSW 16 63598257 missense probably damaging 1.00
R5478:Epha3 UTSW 16 63583533 missense probably damaging 1.00
R6052:Epha3 UTSW 16 63603604 missense possibly damaging 0.94
R6167:Epha3 UTSW 16 63612924 missense probably benign 0.00
R6337:Epha3 UTSW 16 63568443 missense probably damaging 1.00
R6342:Epha3 UTSW 16 63583500 missense probably damaging 1.00
R6793:Epha3 UTSW 16 63773455 missense probably benign 0.01
R6908:Epha3 UTSW 16 63598249 missense probably damaging 1.00
R7029:Epha3 UTSW 16 63773335 missense probably benign 0.37
R7059:Epha3 UTSW 16 63568455 missense probably damaging 1.00
R7175:Epha3 UTSW 16 63583500 missense probably damaging 1.00
R7204:Epha3 UTSW 16 63652332 missense probably benign
R7217:Epha3 UTSW 16 63552494 missense probably benign 0.00
R7315:Epha3 UTSW 16 63552609 missense probably benign 0.00
R7389:Epha3 UTSW 16 63772984 missense probably damaging 1.00
R7419:Epha3 UTSW 16 63598294 missense probably damaging 1.00
R7572:Epha3 UTSW 16 63611080 nonsense probably null
R7667:Epha3 UTSW 16 63566600 missense probably benign 0.21
R7686:Epha3 UTSW 16 63773288 missense probably damaging 1.00
R7855:Epha3 UTSW 16 63773560 missense probably damaging 1.00
R7938:Epha3 UTSW 16 63773560 missense probably damaging 1.00
Z1176:Epha3 UTSW 16 63585012 missense probably damaging 1.00
Nature of Mutation

DNA sequencing using the SOLiD technique identified a T to C transition at position 3028 of the Epha3 transcript in exon 17 of 17 total exons. The mutated nucleotide causes a leucine to proline substitution at amino acid 973 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).

Protein Function and Prediction
The Epha3 gene encodes the 984 amino acid ephrin type-A receptor 3 (EPHA3). EPHA3 is a receptor for ephrin-A ligands. It is a single-pass type I membrane protein with a tyrosine kinase cytoplasmic domain, and is expressed predominantly in the brain and testis. The extracellular region of EPHA3 contains two fibronectin type III domains. The cytoplasmic region contains one sterile alpha motif (SAM) domain and a PDZ-binding motif at the C-terminus, both of which are protein interaction motifs (Uniprot P29319). Mice homozygous for disruptions in this gene usually die within 48 hours of birth of cardiac failure. Survivors develop normally with no indications of cardiac abnormalities.
 
The L973P change occurs in the SAM domain, and is predicted to be probably damaging by the PolyPhen program.
Posted On2010-04-12