Incidental Mutation 'R9734:Dbt'
ID 731598
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
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R9734 (G1)
Quality Score 225.009
Status Not validated
Chromosome 3
Chromosomal Location 116306776-116343630 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 116339704 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Alanine at position 364 (V364A)
Ref Sequence ENSEMBL: ENSMUSP00000000349 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000000349]
AlphaFold P53395
Predicted Effect probably benign
Transcript: ENSMUST00000000349
AA Change: V364A

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000000349
Gene: ENSMUSG00000000340
AA Change: V364A

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
Coding Region Coverage
  • 1x: 99.9%
  • 3x: 99.8%
  • 10x: 99.4%
  • 20x: 98.8%
Validation Efficiency
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: 31 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Acot7 T A 4: 152,345,474 (GRCm39) V348E probably damaging Het
Adgrf5 T C 17: 43,763,199 (GRCm39) L1270P probably damaging Het
Akap12 C T 10: 4,305,929 (GRCm39) T1018M probably damaging Het
Bnip3l G A 14: 67,246,214 (GRCm39) P7L possibly damaging Het
Bod1l A T 5: 41,962,573 (GRCm39) D2721E possibly damaging Het
Bri3bp G T 5: 125,518,736 (GRCm39) R4L unknown Het
Cnbd2 T A 2: 156,180,540 (GRCm39) N241K possibly damaging Het
Cpne2 A G 8: 95,295,228 (GRCm39) I438V probably benign Het
Crybg2 A G 4: 133,801,962 (GRCm39) T732A probably benign Het
D6Ertd527e G C 6: 87,088,839 (GRCm39) S334T unknown Het
Fbn1 A G 2: 125,231,898 (GRCm39) V412A probably benign Het
Fsip1 T A 2: 118,070,916 (GRCm39) Q258L probably benign Het
Gabrg3 A G 7: 56,634,908 (GRCm39) Y92H probably damaging Het
Grid1 C A 14: 35,302,742 (GRCm39) D1002E probably benign Het
Guf1 T A 5: 69,726,605 (GRCm39) C565* probably null Het
Iqce G T 5: 140,678,564 (GRCm39) R127S probably damaging Het
Lama3 A T 18: 12,682,320 (GRCm39) E1095D possibly damaging Het
Lamb2 G T 9: 108,365,830 (GRCm39) G1445W probably damaging Het
Mmp25 C T 17: 23,850,834 (GRCm39) V367M possibly damaging Het
Mucl3 T A 17: 35,949,233 (GRCm39) D122V probably benign Het
Or10d4c T C 9: 39,558,202 (GRCm39) F60S probably damaging Het
Or8b3b A T 9: 38,584,239 (GRCm39) I167N probably benign Het
Pramel30 A G 4: 144,057,737 (GRCm39) M115V probably benign Het
Rusc1 A T 3: 88,996,496 (GRCm39) S696T probably damaging Het
Scamp2 T G 9: 57,490,175 (GRCm39) F225V possibly damaging Het
Stim1 A G 7: 102,064,560 (GRCm39) H210R possibly damaging Het
Vil1 T C 1: 74,454,309 (GRCm39) I24T possibly damaging Het
Vmn1r218 T A 13: 23,321,034 (GRCm39) L127H probably damaging Het
Vmn2r29 A G 7: 7,234,492 (GRCm39) V798A probably damaging Het
Vmn2r68 T A 7: 84,882,757 (GRCm39) T332S possibly damaging Het
Zfp366 A G 13: 99,365,352 (GRCm39) Y171C 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
R5700:Dbt UTSW 3 116,313,952 (GRCm39) missense probably damaging 0.97
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
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 PCR Primer
(F):5'- GAAGGCAGCAGAGTTTATCTTTTC -3'
(R):5'- CCAGGTGATCCGAAATTCAAGTTAC -3'

Sequencing Primer
(F):5'- AGAGGTCCTGAGTTCAATTCCCAG -3'
(R):5'- CACTTATAACTGTGAGTAGCATGAC -3'
Posted On 2022-11-14