Incidental Mutation 'R4241:Dbt'
ID 320206
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 041058-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4241 (G1)
Quality Score 225
Status Validated
Chromosome 3
Chromosomal Location 116306776-116343630 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 116326945 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Threonine at position 98 (I98T)
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: I98T

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000000349
Gene: ENSMUSG00000000340
AA Change: I98T

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 0.8052 question?
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.8%
  • 10x: 97.6%
  • 20x: 95.9%
Validation Efficiency 98% (49/50)
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: 44 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Agl A T 3: 116,548,497 (GRCm39) probably benign Het
Ap5b1 C T 19: 5,618,825 (GRCm39) L82F possibly damaging Het
Arfgef3 A G 10: 18,500,912 (GRCm39) S1113P probably damaging Het
Atoh1 A C 6: 64,706,758 (GRCm39) N151T probably damaging Het
Bcas3 T A 11: 85,361,652 (GRCm39) S25R probably damaging Het
Blcap T A 2: 157,402,343 (GRCm39) probably benign Het
Btbd6 C T 12: 112,940,416 (GRCm39) A13V probably benign Het
Ccdc83 A C 7: 89,896,346 (GRCm39) N74K probably damaging Het
Cdh9 A G 15: 16,849,165 (GRCm39) probably null Het
Chd1 C T 17: 15,990,289 (GRCm39) R1614* probably null Het
Col16a1 G T 4: 129,992,843 (GRCm39) Q1567H probably damaging Het
Coq6 A T 12: 84,420,563 (GRCm39) probably benign Het
Cpd T C 11: 76,737,611 (GRCm39) D61G probably benign Het
Csnk1e A G 15: 79,309,095 (GRCm39) F277S probably damaging Het
Cyp2d41-ps T A 15: 82,663,787 (GRCm39) noncoding transcript Het
Eif3e G A 15: 43,126,086 (GRCm39) T287I probably damaging Het
Fcgbpl1 A G 7: 27,853,760 (GRCm39) S1575G probably damaging Het
Gm7135 A G 1: 97,281,678 (GRCm39) noncoding transcript Het
Gpr176 A T 2: 118,110,091 (GRCm39) S389R probably benign Het
Hax1 A G 3: 89,902,997 (GRCm39) S257P probably damaging Het
Herc1 CTGAGGACTCTTTG CTG 9: 66,355,630 (GRCm39) probably null Het
Ighv1-53 C T 12: 115,122,442 (GRCm39) C5Y probably benign Het
Klhl13 T A X: 23,181,414 (GRCm39) D2V probably damaging Het
Kynu A T 2: 43,571,422 (GRCm39) H446L probably benign Het
Lingo1 A G 9: 56,527,386 (GRCm39) F401S probably damaging Het
Lmbrd1 C T 1: 24,732,049 (GRCm39) Q89* probably null Het
Mov10 T A 3: 104,704,592 (GRCm39) Q773L probably benign Het
Or52e19 G T 7: 102,959,868 (GRCm39) *313Y probably null Het
Or7c70 T A 10: 78,683,739 (GRCm39) R3S probably benign Het
Pde6c G A 19: 38,151,293 (GRCm39) G608S probably damaging Het
Peli3 T C 19: 4,982,426 (GRCm39) H413R probably damaging Het
Pkdrej C T 15: 85,702,345 (GRCm39) R1197Q probably damaging Het
Rcan2 T A 17: 44,264,370 (GRCm39) V10D probably benign Het
Slc10a5 A G 3: 10,400,520 (GRCm39) S47P probably damaging Het
Sprr3 A G 3: 92,364,214 (GRCm39) V210A possibly damaging Het
Tcerg1l G T 7: 137,999,361 (GRCm39) Q8K unknown Het
Ubfd1 T C 7: 121,670,977 (GRCm39) V265A possibly damaging Het
Ubr1 T C 2: 120,764,867 (GRCm39) D529G possibly damaging Het
Vmn1r180 A T 7: 23,652,298 (GRCm39) I154F probably damaging Het
Vmn1r237 A G 17: 21,534,925 (GRCm39) H216R possibly damaging Het
Whrn C T 4: 63,351,210 (GRCm39) probably benign Het
Zfr T G 15: 12,149,745 (GRCm39) D388E probably damaging Het
Zic5 T C 14: 122,702,075 (GRCm39) I219V probably benign Het
Zmat5 A G 11: 4,678,614 (GRCm39) N53D probably benign 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
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'- GGCATTTGGGCGTCAATACTG -3'
(R):5'- CCTCAACCCAGATTTCATAACTTAG -3'

Sequencing Primer
(F):5'- GTCAATACTGCACTAGATGGCTCG -3'
(R):5'- CAGATTTCTGAGTTCCAGGACAGC -3'
Posted On 2015-06-12