Incidental Mutation 'R4681:Dbt'
ID 350019
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 042015-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4681 (G1)
Quality Score 225
Status Validated
Chromosome 3
Chromosomal Location 116306776-116343630 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 116326963 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Aspartic acid to Glycine at position 104 (D104G)
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: D104G

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000000349
Gene: ENSMUSG00000000340
AA Change: D104G

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
Predicted Effect noncoding transcript
Transcript: ENSMUST00000199796
Meta Mutation Damage Score 0.9100 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.5%
  • 10x: 96.8%
  • 20x: 94.1%
Validation Efficiency 100% (59/59)
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: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Ahctf1 G T 1: 179,580,361 (GRCm39) T1947K probably benign Het
Ak9 A C 10: 41,303,234 (GRCm39) K1669T unknown Het
Atp4b T C 8: 13,439,700 (GRCm39) E174G probably benign Het
Bcl6 A G 16: 23,787,203 (GRCm39) probably benign Het
Brca2 C G 5: 150,475,863 (GRCm39) probably null Het
Btnl4 A T 17: 34,689,075 (GRCm39) probably null Het
C4a G T 17: 35,036,075 (GRCm39) noncoding transcript Het
Cab39l A G 14: 59,737,054 (GRCm39) D58G probably benign Het
Cacna2d3 A T 14: 29,015,092 (GRCm39) M100K probably damaging Het
Car2 T A 3: 14,960,624 (GRCm39) Y127* probably null Het
Cdhr1 T C 14: 36,818,194 (GRCm39) N86S probably benign Het
Celsr3 A G 9: 108,704,953 (GRCm39) I479V possibly damaging Het
Cfhr1 A T 1: 139,478,667 (GRCm39) Y53* probably null Het
Cgrrf1 A G 14: 47,091,283 (GRCm39) E269G probably benign Het
Cimap3 C A 3: 105,905,701 (GRCm39) G148C probably damaging Het
Clcn7 A T 17: 25,376,935 (GRCm39) H636L probably damaging Het
Cox10 T G 11: 63,867,277 (GRCm39) T240P possibly damaging Het
Crybg2 CTTCCAGAGCCATGGACCCATCTTTTCCA CTTCCA 4: 133,800,029 (GRCm39) probably null Het
F730035P03Rik T C 7: 99,429,425 (GRCm39) noncoding transcript Het
Fabp3 C T 4: 130,206,180 (GRCm39) T57I probably benign Het
Fam186b T C 15: 99,178,771 (GRCm39) K185R probably benign Het
Fat4 T C 3: 38,941,491 (GRCm39) L128P probably damaging Het
Gbf1 A T 19: 46,268,989 (GRCm39) Q1381L probably benign Het
Glp2r C T 11: 67,621,453 (GRCm39) probably null Het
Gm18025 A G 12: 34,340,884 (GRCm39) S70P probably benign Het
Gpr45 A G 1: 43,072,068 (GRCm39) D237G probably benign Het
Hectd4 A T 5: 121,441,678 (GRCm39) L1213F possibly damaging Het
Hydin T C 8: 111,233,103 (GRCm39) V1734A possibly damaging Het
Kcnh5 A T 12: 75,054,397 (GRCm39) S516T probably benign Het
Liph A C 16: 21,802,777 (GRCm39) S97R probably benign Het
Mtcl1 T C 17: 66,756,139 (GRCm39) T68A unknown Het
Nsun7 T A 5: 66,418,542 (GRCm39) S91T probably benign Het
Or5an10 T C 19: 12,276,413 (GRCm39) T28A probably benign Het
Or6c75 A G 10: 129,337,433 (GRCm39) I227V probably damaging Het
Pcdh20 A T 14: 88,705,052 (GRCm39) N749K probably damaging Het
Pot1b A T 17: 55,961,831 (GRCm39) D582E probably benign Het
Pxdn T C 12: 30,062,325 (GRCm39) I1212T probably benign Het
Ramp1 T C 1: 91,124,511 (GRCm39) V24A probably benign Het
S100a8 T A 3: 90,576,890 (GRCm39) D14E probably benign Het
Stk31 A G 6: 49,414,369 (GRCm39) D501G probably benign Het
Tbc1d19 G A 5: 54,029,595 (GRCm39) V319M probably damaging Het
Tbcel G T 9: 42,361,268 (GRCm39) H93Q probably damaging Het
Traf3ip2 C T 10: 39,515,256 (GRCm39) P345S possibly damaging Het
Trpm8 A T 1: 88,312,427 (GRCm39) I1103F possibly damaging Het
Ttc19 T A 11: 62,199,917 (GRCm39) C112* probably null Het
Unc5c T G 3: 141,474,374 (GRCm39) probably null Het
Urb1 A T 16: 90,601,425 (GRCm39) H115Q probably damaging Het
Vmn2r15 T A 5: 109,434,488 (GRCm39) I739F probably damaging Het
Zcchc14 G T 8: 122,335,339 (GRCm39) probably benign Het
Zfp408 G A 2: 91,476,131 (GRCm39) P341L probably damaging Het
Zfp638 G A 6: 83,958,719 (GRCm39) V1166M possibly 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
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'- TGCACTAGATGGCTCGGATG -3'
(R):5'- GTTTTCTGATCTAAATCCTCAACCCAG -3'

Sequencing Primer
(F):5'- ACTAGATGGCTCGGATGCAACTC -3'
(R):5'- CAGATTTCTGAGTTCCAGGACAGC -3'
Posted On 2015-10-08