Incidental Mutation 'R2897:Dbt'
ID 260829
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 040485-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R2897 (G1)
Quality Score 225
Status Validated
Chromosome 3
Chromosomal Location 116306776-116343630 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 116317061 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Glutamic Acid at position 79 (V79E)
Ref Sequence ENSEMBL: ENSMUSP00000000349 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000000349] [ENSMUST00000197201] [ENSMUST00000199614]
AlphaFold P53395
Predicted Effect probably damaging
Transcript: ENSMUST00000000349
AA Change: V79E

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000000349
Gene: ENSMUSG00000000340
AA Change: V79E

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: ENSMUST00000117197
Predicted Effect noncoding transcript
Transcript: ENSMUST00000196376
Predicted Effect probably benign
Transcript: ENSMUST00000197201
Predicted Effect probably benign
Transcript: ENSMUST00000199614
Meta Mutation Damage Score 0.9164 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.7%
  • 10x: 97.5%
  • 20x: 95.8%
Validation Efficiency 99% (72/73)
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: 72 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2210408I21Rik T C 13: 77,471,640 (GRCm39) V1015A probably benign Het
4930480E11Rik C T X: 77,413,868 (GRCm39) Q198* probably null Het
Acap3 G C 4: 155,989,388 (GRCm39) probably null Het
Adamts14 T C 10: 61,040,689 (GRCm39) D879G probably damaging Het
Akap1 A T 11: 88,735,605 (GRCm39) C352* probably null Het
Ankk1 T A 9: 49,333,122 (GRCm39) T121S probably benign Het
Ankrd6 T C 4: 32,860,438 (GRCm39) S2G probably damaging Het
Anks1 G T 17: 28,204,337 (GRCm39) probably null Het
Apob G A 12: 8,060,356 (GRCm39) G2946D probably damaging Het
Atm A C 9: 53,419,105 (GRCm39) C782W probably damaging Het
Atp1a4 A T 1: 172,074,257 (GRCm39) I332N probably damaging Het
Bnc2 T C 4: 84,211,152 (GRCm39) I406V probably damaging Het
Cdh20 A T 1: 104,875,199 (GRCm39) D327V probably damaging Het
Cep192 T A 18: 67,988,341 (GRCm39) probably null Het
Chd5 T C 4: 152,456,572 (GRCm39) F970L probably damaging Het
Coq9 T C 8: 95,579,752 (GRCm39) Y236H probably damaging Het
Csn1s2a A G 5: 87,929,680 (GRCm39) H93R unknown Het
Cxcr2 T C 1: 74,198,130 (GRCm39) V208A probably benign Het
Cyp1b1 G A 17: 80,021,160 (GRCm39) T194M probably benign Het
Dcx A G X: 142,706,428 (GRCm39) probably benign Het
Dnm3 G A 1: 162,113,643 (GRCm39) probably benign Het
Erbin C T 13: 104,022,705 (GRCm39) E45K probably damaging Het
Fastkd1 A G 2: 69,532,960 (GRCm39) L469P probably damaging Het
Gkn3 C T 6: 87,360,507 (GRCm39) A163T probably damaging Het
Gm10271 A G 10: 116,808,495 (GRCm39) L7S probably damaging Het
Gm5087 T C 14: 13,158,805 (GRCm38) noncoding transcript Het
Hid1 A G 11: 115,241,356 (GRCm39) S645P probably benign Het
Hmcn1 C T 1: 150,678,624 (GRCm39) C499Y probably damaging Het
Ifna1 C A 4: 88,768,450 (GRCm39) Q43K probably benign Het
Ikbkb G T 8: 23,159,693 (GRCm39) Q432K possibly damaging Het
Inpp4a A T 1: 37,405,675 (GRCm39) H148L probably benign Het
Itpr2 C T 6: 146,074,839 (GRCm39) R2338Q probably benign Het
Itpr2 A T 6: 146,224,667 (GRCm39) I1441N probably damaging Het
Krt78 T C 15: 101,855,541 (GRCm39) R757G probably benign Het
Lmx1a T A 1: 167,658,109 (GRCm39) probably benign Het
Lpxn T A 19: 12,796,722 (GRCm39) S81T probably benign Het
Lrriq1 T C 10: 103,063,111 (GRCm39) N65S probably damaging Het
Mis18bp1 T C 12: 65,180,360 (GRCm39) D981G probably benign Het
Mpp4 T C 1: 59,183,853 (GRCm39) I296V probably benign Het
Mtrf1l T C 10: 5,767,565 (GRCm39) R184G probably benign Het
Muc19 T C 15: 91,822,550 (GRCm39) noncoding transcript Het
Myo6 T A 9: 80,176,893 (GRCm39) probably null Het
Myom1 A G 17: 71,408,215 (GRCm39) probably benign Het
Ndrg4 A G 8: 96,405,014 (GRCm39) probably null Het
Neu2 A G 1: 87,522,782 (GRCm39) S72G probably benign Het
Nlrc4 T A 17: 74,755,040 (GRCm39) M59L probably benign Het
Nuak2 A T 1: 132,252,791 (GRCm39) H115L probably damaging Het
Oog1 T A 12: 87,655,178 (GRCm39) I272K probably damaging Het
Or10aa1 T C 1: 173,869,699 (GRCm39) F61S probably damaging Het
Or52a20 A T 7: 103,366,749 (GRCm39) Y316F probably benign Het
Pcdhb1 A G 18: 37,399,516 (GRCm39) Y489C probably damaging Het
Pde5a T C 3: 122,572,651 (GRCm39) I344T probably benign Het
Pip5kl1 C A 2: 32,473,359 (GRCm39) A332D probably benign Het
Pja1 T C X: 98,510,754 (GRCm39) E385G probably benign Het
Psma6 A T 12: 55,454,829 (GRCm39) I53L probably benign Het
Ric8b T G 10: 84,783,761 (GRCm39) D206E probably benign Het
Sardh T C 2: 27,079,559 (GRCm39) D911G probably benign Het
Serpinb8 A G 1: 107,534,776 (GRCm39) T32A unknown Het
Shroom2 G T X: 151,443,035 (GRCm39) T710K probably benign Het
Shroom3 G T 5: 93,090,945 (GRCm39) V1151F probably damaging Het
Slc38a7 A G 8: 96,572,424 (GRCm39) probably benign Het
Stk36 T A 1: 74,671,984 (GRCm39) S895T probably null Het
Sycp3 G A 10: 88,308,544 (GRCm39) E205K possibly damaging Het
Tbc1d16 A T 11: 119,048,654 (GRCm39) I333N probably damaging Het
Tectb C G 19: 55,169,431 (GRCm39) probably benign Het
Tmeff1 T A 4: 48,658,831 (GRCm39) Y101* probably null Het
Tns2 C T 15: 102,017,369 (GRCm39) R281C probably damaging Het
Ttn T A 2: 76,549,500 (GRCm39) T23399S probably damaging Het
Vipas39 A G 12: 87,289,297 (GRCm39) V389A possibly damaging Het
Vps41 T C 13: 18,994,598 (GRCm39) probably benign Het
Zfp329 A T 7: 12,544,413 (GRCm39) H370Q probably damaging Het
Zfp37 C T 4: 62,110,014 (GRCm39) G350D 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
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
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 PCR Primer
(F):5'- CATAAGTCCTGTGGCAGTGG -3'
(R):5'- GTGCACAGACATACATGCAG -3'

Sequencing Primer
(F):5'- GTTTCGTTGTCTATAGGATGGAAC -3'
(R):5'- AGACATACATGCAGGCAAAAC -3'
Posted On 2015-01-23