Incidental Mutation 'R5700:Dbt'
ID 450831
Institutional Source Beutler Lab
Gene Symbol Dbt
Ensembl Gene ENSMUSG00000000340
Gene Name dihydrolipoamide branched chain transacylase E2
Synonyms dihydrolipoyllysine-residue (2-methylpropanoyl)transferase, D3Wsu60e, dihydrolipoyl transacylase, BCKAD E2
MMRRC Submission 043328-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R5700 (G1)
Quality Score 225
Status Not validated
Chromosome 3
Chromosomal Location 116306776-116343630 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to A at 116313952 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Methionine at position 40 (V40M)
Ref Sequence ENSEMBL: ENSMUSP00000143713 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000000349] [ENSMUST00000197201] [ENSMUST00000199614]
AlphaFold P53395
Predicted Effect probably benign
Transcript: ENSMUST00000000349
AA Change: V40M

PolyPhen 2 Score 0.418 (Sensitivity: 0.89; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000000349
Gene: ENSMUSG00000000340
AA Change: V40M

DomainStartEndE-ValueType
Pfam:Biotin_lipoyl 65 138 2.8e-22 PFAM
Pfam:E3_binding 171 206 4.4e-18 PFAM
low complexity region 218 232 N/A INTRINSIC
Pfam:2-oxoacid_dh 248 479 8.5e-83 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000196376
Predicted Effect probably benign
Transcript: ENSMUST00000197201
Predicted Effect probably damaging
Transcript: ENSMUST00000199614
AA Change: V40M

PolyPhen 2 Score 0.974 (Sensitivity: 0.76; Specificity: 0.96)
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.4%
Validation Efficiency 98% (50/51)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] The branched-chain alpha-keto acid dehydrogenase complex (BCKD) is an inner-mitochondrial enzyme complex involved in the breakdown of the branched-chain amino acids isoleucine, leucine, and valine. The BCKD complex is thought to be composed of a core of 24 transacylase (E2) subunits, and associated decarboxylase (E1), dehydrogenase (E3), and regulatory subunits. This gene encodes the transacylase (E2) subunit. Mutations in this gene result in maple syrup urine disease, type 2. Alternatively spliced transcript variants have been described, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]
PHENOTYPE: Homozygous mutation of this gene results in postnatal lethality, pallor, respiratory distress, and an increase in branched-chain amino acids in the blood and urine. Homozygotes model Maple Syrup Urine Disease. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 49 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abcc2 A T 19: 43,786,633 (GRCm39) Q155L probably benign Het
Acadvl A C 11: 69,904,029 (GRCm39) Y242D probably damaging Het
Armc8 A G 9: 99,378,202 (GRCm39) probably null Het
Barx2 A T 9: 31,770,061 (GRCm39) F156I probably damaging Het
Best1 T C 19: 9,974,563 (GRCm39) probably benign Het
Btbd8 T C 5: 107,651,514 (GRCm39) S136P possibly damaging Het
Btla T A 16: 45,070,936 (GRCm39) Y298* probably null Het
Casr T A 16: 36,329,979 (GRCm39) I452F probably damaging Het
Ccser1 C A 6: 61,288,260 (GRCm39) P141H probably benign Het
Cr2 A G 1: 194,842,065 (GRCm39) V296A probably damaging Het
Csl T A 10: 99,594,877 (GRCm39) I63F probably damaging Het
Fam53b A T 7: 132,361,749 (GRCm39) L93Q probably damaging Het
Fdps T C 3: 89,002,956 (GRCm39) I105V probably damaging Het
Gm4884 A G 7: 40,692,643 (GRCm39) D204G probably benign Het
Gm5592 A G 7: 40,808,003 (GRCm39) probably benign Het
Gm7367 A T 7: 59,805,510 (GRCm39) noncoding transcript Het
Grid2 T A 6: 64,071,416 (GRCm39) V413D possibly damaging Het
Hgf C T 5: 16,815,122 (GRCm39) P471L probably damaging Het
Hoxc9 T C 15: 102,890,313 (GRCm39) Y77H possibly damaging Het
Hs6st3 C T 14: 119,376,199 (GRCm39) R125* probably null Het
Kdm4b T C 17: 56,658,700 (GRCm39) I15T possibly damaging Het
Klhl1 T C 14: 96,755,476 (GRCm39) N93S probably benign Het
Klhl6 G A 16: 19,775,968 (GRCm39) Q197* probably null Het
Medag T C 5: 149,345,682 (GRCm39) V7A probably benign Het
Mptx2 G A 1: 173,102,414 (GRCm39) L92F probably benign Het
Nckap5 C T 1: 125,904,662 (GRCm39) probably null Het
Obscn T C 11: 59,024,020 (GRCm39) K550R probably benign Het
Or2d36 A G 7: 106,746,748 (GRCm39) N75S probably benign Het
Or2w1b T A 13: 21,300,171 (GRCm39) V103E probably damaging Het
Or5h25 T A 16: 58,930,356 (GRCm39) I206F probably damaging Het
Or7a42 T C 10: 78,791,318 (GRCm39) I93T probably damaging Het
Parp6 T C 9: 59,532,010 (GRCm39) S101P probably damaging Het
Plcd3 T C 11: 102,964,589 (GRCm39) N594S probably benign Het
Plscr5 A T 9: 92,087,564 (GRCm39) K178* probably null Het
Ppp2r1b T C 9: 50,789,457 (GRCm39) Y443H probably damaging Het
Prnd G A 2: 131,795,263 (GRCm39) V128I probably benign Het
Rftn1 G T 17: 50,309,697 (GRCm39) P156Q probably damaging Het
Scmh1 T C 4: 120,374,143 (GRCm39) V445A probably benign Het
Serpinb6c A T 13: 34,083,291 (GRCm39) M41K probably damaging Het
Slc66a1 C T 4: 139,027,565 (GRCm39) S259N probably damaging Het
Spns1 A G 7: 125,971,641 (GRCm39) V303A possibly damaging Het
Ston1 T A 17: 88,951,767 (GRCm39) S639R probably damaging Het
Thbs4 T C 13: 92,913,461 (GRCm39) D153G probably benign Het
Timm44 T C 8: 4,324,171 (GRCm39) Y36C probably damaging Het
Trim34b G T 7: 103,985,618 (GRCm39) V418F probably damaging Het
Vmn1r72 C T 7: 11,404,350 (GRCm39) V33M probably damaging Het
Zcchc7 T C 4: 44,931,084 (GRCm39) V412A probably benign Het
Zfand1 T A 3: 10,406,079 (GRCm39) N210I probably damaging Het
Zfhx3 A G 8: 109,660,499 (GRCm39) H1251R probably damaging Het
Other mutations in Dbt
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00546:Dbt APN 3 116,332,930 (GRCm39) missense probably benign
IGL00660:Dbt APN 3 116,339,944 (GRCm39) missense probably damaging 1.00
IGL00839:Dbt APN 3 116,339,763 (GRCm39) missense probably benign 0.21
IGL00840:Dbt APN 3 116,339,763 (GRCm39) missense probably benign 0.21
IGL00841:Dbt APN 3 116,339,763 (GRCm39) missense probably benign 0.21
IGL00852:Dbt APN 3 116,339,763 (GRCm39) missense probably benign 0.21
IGL00861:Dbt APN 3 116,339,763 (GRCm39) missense probably benign 0.21
IGL00955:Dbt APN 3 116,339,763 (GRCm39) missense probably benign 0.21
IGL00956:Dbt APN 3 116,339,763 (GRCm39) missense probably benign 0.21
IGL01475:Dbt APN 3 116,313,908 (GRCm39) missense possibly damaging 0.92
IGL01521:Dbt APN 3 116,327,032 (GRCm39) missense probably benign 0.00
IGL01806:Dbt APN 3 116,326,954 (GRCm39) missense probably damaging 1.00
IGL03288:Dbt APN 3 116,341,847 (GRCm39) makesense probably null
R0025:Dbt UTSW 3 116,328,432 (GRCm39) missense probably benign 0.22
R0066:Dbt UTSW 3 116,337,478 (GRCm39) missense probably benign 0.00
R0066:Dbt UTSW 3 116,337,478 (GRCm39) missense probably benign 0.00
R0190:Dbt UTSW 3 116,332,736 (GRCm39) critical splice acceptor site probably null
R1650:Dbt UTSW 3 116,328,381 (GRCm39) splice site probably null
R1750:Dbt UTSW 3 116,339,943 (GRCm39) missense probably benign 0.18
R2130:Dbt UTSW 3 116,332,773 (GRCm39) missense probably damaging 1.00
R2131:Dbt UTSW 3 116,332,773 (GRCm39) missense probably damaging 1.00
R2133:Dbt UTSW 3 116,332,773 (GRCm39) missense probably damaging 1.00
R2897:Dbt UTSW 3 116,317,061 (GRCm39) missense probably damaging 1.00
R3442:Dbt UTSW 3 116,341,840 (GRCm39) missense probably benign
R4241:Dbt UTSW 3 116,326,945 (GRCm39) missense probably damaging 1.00
R4681:Dbt UTSW 3 116,326,963 (GRCm39) missense probably damaging 1.00
R4724:Dbt UTSW 3 116,326,945 (GRCm39) missense probably damaging 1.00
R4736:Dbt UTSW 3 116,332,781 (GRCm39) missense probably damaging 0.99
R4737:Dbt UTSW 3 116,332,781 (GRCm39) missense probably damaging 0.99
R4738:Dbt UTSW 3 116,332,781 (GRCm39) missense probably damaging 0.99
R4740:Dbt UTSW 3 116,332,781 (GRCm39) missense probably damaging 0.99
R4809:Dbt UTSW 3 116,339,992 (GRCm39) missense probably damaging 1.00
R4823:Dbt UTSW 3 116,317,036 (GRCm39) missense probably damaging 1.00
R4861:Dbt UTSW 3 116,341,727 (GRCm39) missense probably benign 0.00
R4861:Dbt UTSW 3 116,341,727 (GRCm39) missense probably benign 0.00
R5148:Dbt UTSW 3 116,321,893 (GRCm39) intron probably benign
R5327:Dbt UTSW 3 116,322,220 (GRCm39) intron probably benign
R5931:Dbt UTSW 3 116,317,074 (GRCm39) missense possibly damaging 0.80
R6463:Dbt UTSW 3 116,333,409 (GRCm39) missense possibly damaging 0.51
R7841:Dbt UTSW 3 116,339,746 (GRCm39) missense possibly damaging 0.85
R8122:Dbt UTSW 3 116,313,891 (GRCm39) nonsense probably null
R8385:Dbt UTSW 3 116,317,039 (GRCm39) missense probably damaging 1.00
R8941:Dbt UTSW 3 116,339,698 (GRCm39) missense probably damaging 0.99
R9734:Dbt UTSW 3 116,339,704 (GRCm39) missense probably benign
RF008:Dbt UTSW 3 116,341,717 (GRCm39) nonsense probably null
RF016:Dbt UTSW 3 116,333,363 (GRCm39) missense probably damaging 1.00
Z1177:Dbt UTSW 3 116,339,740 (GRCm39) missense probably damaging 1.00
Predicted Primers
Posted On 2017-01-03