Incidental Mutation 'R8385:Dbt'
ID 647101
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 067751-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R8385 (G1)
Quality Score 225.009
Status Not validated
Chromosome 3
Chromosomal Location 116306776-116343630 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to T at 116317039 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Phenylalanine at position 72 (I72F)
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: I72F

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000000349
Gene: ENSMUSG00000000340
AA Change: I72F

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 probably benign
Transcript: ENSMUST00000197201
Predicted Effect probably benign
Transcript: ENSMUST00000199614
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 100.0%
  • 10x: 99.7%
  • 20x: 99.0%
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: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Brap C T 5: 121,823,197 (GRCm39) T473I probably benign Het
Cacna1e T A 1: 154,319,687 (GRCm39) M1400L probably damaging Het
Catsper2 A G 2: 121,240,621 (GRCm39) I127T possibly damaging Het
Ddhd2 T C 8: 26,225,041 (GRCm39) H592R probably damaging Het
Disp2 T A 2: 118,620,891 (GRCm39) M541K probably damaging Het
Dnai7 C T 6: 145,120,918 (GRCm39) E685K probably damaging Het
Dnmbp T C 19: 43,878,090 (GRCm39) D327G probably benign Het
Dvl1 A G 4: 155,940,037 (GRCm39) S390G possibly damaging Het
Fbxo22 A G 9: 55,121,233 (GRCm39) D106G probably damaging Het
Gfm2 A G 13: 97,301,519 (GRCm39) T441A probably benign Het
Gm5431 T C 11: 48,780,347 (GRCm39) I192V probably damaging Het
Gosr1 T A 11: 76,620,967 (GRCm39) T241S possibly damaging Het
Hk2 T C 6: 82,706,527 (GRCm39) S792G probably benign Het
Itsn1 A C 16: 91,690,699 (GRCm39) K1302Q unknown Het
Kif16b T C 2: 142,554,258 (GRCm39) K847E probably benign Het
Lfng G A 5: 140,598,981 (GRCm39) E297K probably damaging Het
Mark3 A G 12: 111,621,808 (GRCm39) D650G possibly damaging Het
Mgat4f A G 1: 134,318,376 (GRCm39) K383E probably benign Het
Mob3b T C 4: 34,985,980 (GRCm39) Y186C probably damaging Het
Mphosph9 T C 5: 124,450,785 (GRCm39) K329E probably benign Het
Mta1 A T 12: 113,095,085 (GRCm39) M448L probably benign Het
Mterf1a A T 5: 3,941,384 (GRCm39) N161K probably damaging Het
Myo10 T A 15: 25,804,484 (GRCm39) I1593N probably damaging Het
Naca A G 10: 127,878,307 (GRCm39) N1113S unknown Het
Or2w4 T C 13: 21,795,522 (GRCm39) I206V probably benign Het
Or5e1 T G 7: 108,354,511 (GRCm39) Y149* probably null Het
Pcdhga1 A T 18: 37,795,149 (GRCm39) D51V probably damaging Het
Peg3 T C 7: 6,711,082 (GRCm39) E1380G probably damaging Het
Pkd1 G A 17: 24,794,702 (GRCm39) V2130M possibly damaging Het
Pla2g4c C T 7: 13,063,589 (GRCm39) P19S probably benign Het
Popdc2 G A 16: 38,183,262 (GRCm39) V82I probably benign Het
Ppfibp2 A G 7: 107,296,894 (GRCm39) R203G probably benign Het
Rab19 T A 6: 39,360,892 (GRCm39) N13K probably benign Het
Raet1d T A 10: 22,246,817 (GRCm39) D48E probably benign Het
Rell1 T A 5: 64,087,861 (GRCm39) K136* probably null Het
Slc38a4 A G 15: 96,897,393 (GRCm39) I474T probably damaging Het
Slf1 T C 13: 77,254,109 (GRCm39) M243V probably benign Het
Spata31f1a C T 4: 42,850,509 (GRCm39) R549H possibly damaging Het
Speer4c2 A T 5: 15,857,669 (GRCm39) S203T unknown Het
Spg11 A T 2: 121,927,802 (GRCm39) S661T probably benign Het
Thra C G 11: 98,659,177 (GRCm39) S435R probably benign Het
Tmem181a T C 17: 6,339,274 (GRCm39) I61T probably benign Het
Ttpa G A 4: 20,028,483 (GRCm39) G247S probably damaging Het
Usp17lb C T 7: 104,489,830 (GRCm39) V366I possibly damaging Het
Vit A T 17: 78,927,066 (GRCm39) Q337L probably benign Het
Vmn2r102 A G 17: 19,914,088 (GRCm39) Y551C possibly damaging Het
Vps52 T C 17: 34,181,791 (GRCm39) L539P probably damaging Het
Ythdc1 C A 5: 86,975,961 (GRCm39) P529T possibly damaging Het
Zdhhc13 T C 7: 48,455,444 (GRCm39) probably null Het
Zfp282 A T 6: 47,882,023 (GRCm39) Y570F possibly damaging Het
Zfp872 A T 9: 22,111,407 (GRCm39) K295N 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
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'- GCATAAGTCCTGTGGCAGTGG -3'
(R):5'- TCACATGGAAGAAAGTTTTGTGG -3'

Sequencing Primer
(F):5'- CAGTGGGTCTGTGTCTTGAAG -3'
(R):5'- GTGGAATGACTTCTGCTACCAGC -3'
Posted On 2020-09-02