Incidental Mutation 'F6893:Myh4'
ID189
Institutional Source Beutler Lab
Gene Symbol Myh4
Ensembl Gene ENSMUSG00000057003
Gene Namemyosin, heavy polypeptide 4, skeletal muscle
SynonymsMM, Minimsc, MYH-2B, MyHC-IIb, Minmus, MHC2B, Myhsf
Accession Numbers

Genbank: NM_010855; MGI: 1339713

Is this an essential gene? Possibly non essential (E-score: 0.418) question?
Stock #F6893 (G3) of strain busy
Quality Score
Status Validated
Chromosome11
Chromosomal Location67238029-67260446 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 67255457 bp
ZygosityHomozygous
Amino Acid Change Aspartic acid to Glycine at position 1447 (D1447G)
Ref Sequence ENSEMBL: ENSMUSP00000127514 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000018632] [ENSMUST00000170942]
Predicted Effect probably null
Transcript: ENSMUST00000018632
AA Change: D1447G

PolyPhen 2 Score 0.118 (Sensitivity: 0.93; Specificity: 0.86)
SMART Domains Protein: ENSMUSP00000018632
Gene: ENSMUSG00000057003
AA Change: D1447G

DomainStartEndE-ValueType
Pfam:Myosin_N 35 74 4.7e-14 PFAM
MYSc 80 783 N/A SMART
IQ 784 806 8.84e-3 SMART
Pfam:Myosin_tail_1 847 1928 2.5e-168 PFAM
Predicted Effect probably null
Transcript: ENSMUST00000170942
AA Change: D1447G

PolyPhen 2 Score 0.118 (Sensitivity: 0.93; Specificity: 0.86)
SMART Domains Protein: ENSMUSP00000127514
Gene: ENSMUSG00000057003
AA Change: D1447G

DomainStartEndE-ValueType
Pfam:Myosin_N 35 76 1.1e-15 PFAM
MYSc 80 783 N/A SMART
IQ 784 806 8.84e-3 SMART
low complexity region 928 942 N/A INTRINSIC
Pfam:Myosin_tail_1 1072 1930 N/A PFAM
Meta Mutation Damage Score 0.316 question?
Coding Region Coverage
  • 1x: 88.7%
  • 3x: 74.0%
Validation Efficiency 88% (165/188)
MGI Phenotype PHENOTYPE: Homozygotes for a targeted null mutation exhibit decreased growth and muscle defects including reduced muscle mass, muscle fiber loss, compensatory fiber hypertrophy, and impaired strength. [provided by MGI curators]
Allele List at MGI

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

Other mutations in this stock
Total: 35 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca14 G A 7: 120,325,038 V1638M probably damaging Het
Agrn C T 4: 156,174,179 R972Q probably benign Het
Anxa3 T C 5: 96,824,994 probably benign Het
Bpifa6 G T 2: 153,987,158 D202Y probably damaging Het
Ccdc15 G A 9: 37,315,640 T346I probably damaging Homo
Celsr3 G A 9: 108,835,067 R1731H probably benign Het
Ces4a A G 8: 105,147,227 R443G possibly damaging Het
Chd2 T C 7: 73,507,872 Q175R possibly damaging Het
Dpyd T A 3: 118,804,134 probably null Het
Dscam G T 16: 97,056,460 H117N possibly damaging Het
F13a1 A G 13: 36,972,025 Y205H probably damaging Het
Fat3 A C 9: 16,006,789 L1446R probably damaging Homo
Golga4 T C 9: 118,553,457 L515S probably damaging Het
Hoxb1 A T 11: 96,365,902 T26S probably benign Het
Igsf10 T G 3: 59,331,060 T567P probably damaging Het
Lamb2 T C 9: 108,482,556 V365A probably benign Het
Mepe A G 5: 104,337,376 I127M possibly damaging Het
Mpi A T 9: 57,546,549 M230K probably benign Homo
Olfr161 A G 16: 3,593,163 I256V possibly damaging Het
Olfr350 A G 2: 36,850,807 T254A probably benign Het
Panx2 T C 15: 89,068,010 Y227H probably damaging Homo
Pdzd7 A G 19: 45,036,734 W441R probably damaging Het
Poldip2 A G 11: 78,519,194 I267M probably damaging Homo
Pros1 T A 16: 62,924,639 V539E probably damaging Het
Sacs T C 14: 61,212,976 M4157T probably benign Het
Slc45a3 A G 1: 131,981,337 E424G probably benign Homo
Slc9a1 A G 4: 133,422,146 E761G probably benign Homo
Stab2 G A 10: 86,855,171 P2178L probably damaging Het
Syt4 C T 18: 31,444,221 V27I possibly damaging Homo
Thumpd1 T A 7: 119,720,576 K56* probably null Het
Tpr A G 1: 150,393,562 K19E possibly damaging Homo
Ttll10 A G 4: 156,048,318 I74T probably benign Het
Txnrd1 C T 10: 82,866,989 Q95* probably null Homo
Zc3h7b A G 15: 81,778,671 E421G possibly damaging Homo
Zc3hc1 G T 6: 30,387,526 D51E probably benign Homo
Other mutations in Myh4
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01471:Myh4 APN 11 67255379 missense probably damaging 1.00
IGL01600:Myh4 APN 11 67260189 missense possibly damaging 0.85
IGL01737:Myh4 APN 11 67243419 splice site probably benign
IGL02208:Myh4 APN 11 67251934 missense possibly damaging 0.96
IGL02334:Myh4 APN 11 67245547 missense probably damaging 1.00
IGL02376:Myh4 APN 11 67245728 missense probably benign 0.00
IGL02429:Myh4 APN 11 67258982 nonsense probably null
IGL02450:Myh4 APN 11 67251809 missense probably damaging 1.00
IGL02524:Myh4 APN 11 67249240 missense possibly damaging 0.79
IGL02612:Myh4 APN 11 67256479 missense probably benign
IGL03024:Myh4 APN 11 67248479 missense probably damaging 1.00
IGL03065:Myh4 APN 11 67259156 missense probably benign 0.12
IGL03084:Myh4 APN 11 67251951 splice site probably null
IGL03188:Myh4 APN 11 67246543 critical splice donor site probably null
IGL03204:Myh4 APN 11 67250296 missense possibly damaging 0.63
IGL03252:Myh4 APN 11 67252216 missense probably damaging 0.99
IGL03345:Myh4 APN 11 67255478 missense probably damaging 1.00
PIT1430001:Myh4 UTSW 11 67258832 missense probably benign 0.01
R0099:Myh4 UTSW 11 67259347 missense probably benign
R0194:Myh4 UTSW 11 67252336 missense probably damaging 1.00
R0346:Myh4 UTSW 11 67260326 missense probably benign
R0427:Myh4 UTSW 11 67258653 missense probably damaging 0.98
R0483:Myh4 UTSW 11 67252297 missense probably damaging 1.00
R0571:Myh4 UTSW 11 67250331 missense possibly damaging 0.91
R0854:Myh4 UTSW 11 67259147 missense possibly damaging 0.90
R0940:Myh4 UTSW 11 67242863 missense probably damaging 1.00
R0946:Myh4 UTSW 11 67251751 missense possibly damaging 0.70
R1108:Myh4 UTSW 11 67255706 missense probably null 0.01
R1162:Myh4 UTSW 11 67258613 missense probably damaging 0.97
R1194:Myh4 UTSW 11 67255734 critical splice donor site probably null
R1347:Myh4 UTSW 11 67244741 splice site probably benign
R1457:Myh4 UTSW 11 67248461 missense probably damaging 0.99
R1531:Myh4 UTSW 11 67250540 missense probably benign 0.01
R1716:Myh4 UTSW 11 67250309 missense possibly damaging 0.92
R1766:Myh4 UTSW 11 67256295 missense possibly damaging 0.61
R1796:Myh4 UTSW 11 67260324 missense probably benign
R1856:Myh4 UTSW 11 67255682 missense probably damaging 1.00
R1873:Myh4 UTSW 11 67254743 missense probably benign 0.16
R2069:Myh4 UTSW 11 67246366 splice site probably benign
R2370:Myh4 UTSW 11 67255628 missense probably damaging 1.00
R2406:Myh4 UTSW 11 67259174 missense probably damaging 1.00
R2414:Myh4 UTSW 11 67250768 missense probably benign 0.01
R2848:Myh4 UTSW 11 67248633 missense probably benign 0.20
R3111:Myh4 UTSW 11 67246450 missense possibly damaging 0.86
R3744:Myh4 UTSW 11 67255315 missense probably damaging 1.00
R3845:Myh4 UTSW 11 67259105 missense possibly damaging 0.90
R3877:Myh4 UTSW 11 67257183 missense probably benign 0.00
R4498:Myh4 UTSW 11 67251752 missense probably damaging 1.00
R4514:Myh4 UTSW 11 67255569 missense probably benign 0.06
R4601:Myh4 UTSW 11 67250310 missense possibly damaging 0.94
R4673:Myh4 UTSW 11 67246401 missense probably benign 0.02
R4684:Myh4 UTSW 11 67245811 missense probably damaging 0.99
R4736:Myh4 UTSW 11 67240920 missense probably benign 0.01
R4837:Myh4 UTSW 11 67258992 missense probably benign 0.38
R4866:Myh4 UTSW 11 67248627 missense probably benign 0.00
R4869:Myh4 UTSW 11 67252664 missense probably damaging 1.00
R4887:Myh4 UTSW 11 67241054 missense probably damaging 0.99
R4921:Myh4 UTSW 11 67254028 missense probably damaging 1.00
R5005:Myh4 UTSW 11 67253415 missense probably benign 0.05
R5008:Myh4 UTSW 11 67253532 missense probably benign 0.00
R5011:Myh4 UTSW 11 67256363 missense probably benign 0.03
R5087:Myh4 UTSW 11 67255409 missense probably damaging 1.00
R5277:Myh4 UTSW 11 67252354 missense probably damaging 1.00
R5336:Myh4 UTSW 11 67259191 splice site probably null
R5354:Myh4 UTSW 11 67255725 missense possibly damaging 0.69
R5371:Myh4 UTSW 11 67259324 missense probably damaging 1.00
R5484:Myh4 UTSW 11 67251818 missense probably damaging 1.00
R5774:Myh4 UTSW 11 67253208 nonsense probably null
R5902:Myh4 UTSW 11 67250907 missense possibly damaging 0.69
R5941:Myh4 UTSW 11 67259300 missense probably damaging 0.99
R6045:Myh4 UTSW 11 67244724 missense probably benign 0.32
R6156:Myh4 UTSW 11 67250792 missense probably benign 0.00
R6301:Myh4 UTSW 11 67255333 missense possibly damaging 0.95
R6318:Myh4 UTSW 11 67243442 missense probably benign 0.02
R6352:Myh4 UTSW 11 67252282 missense probably damaging 1.00
R6385:Myh4 UTSW 11 67255837 missense probably damaging 1.00
R6493:Myh4 UTSW 11 67258629 missense probably benign 0.16
R6666:Myh4 UTSW 11 67251812 missense probably damaging 1.00
R6826:Myh4 UTSW 11 67246531 missense probably damaging 1.00
R6852:Myh4 UTSW 11 67252968 splice site probably null
R6857:Myh4 UTSW 11 67249885 missense possibly damaging 0.74
X0027:Myh4 UTSW 11 67246480 missense probably damaging 1.00
Nature of Mutation
DNA sequencing using the SOLiD technique identified an A to G transition at position 4430 of the Myh4 transcript in exon 30 of 39 total exons.  The mutated nucleotide causes an aspartic acid to glycine substitution at amino acid 1447 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).
 
Protein Function and Prediction
The Myh4gene encodes the 1939 amino acid myosin heavy chain and is necessary for muscle contraction (Uniprot Q5SX39). Homozygotes for a targeted null mutation exhibit decreased growth and muscle defects including reduced muscle mass, muscle fiber loss, compensatory fiber hypertrophy, and impaired strength.
 
The D1447G change is predicted to be benign by the PolyPhen program.
Posted On2010-05-03