Incidental Mutation 'R4737:Dbt'
ID359322
Institutional Source Beutler Lab
Gene Symbol Dbt
Ensembl Gene ENSMUSG00000000340
Gene Namedihydrolipoamide branched chain transacylase E2
SynonymsD3Wsu60e, dihydrolipoyllysine-residue (2-methylpropanoyl)transferase, dihydrolipoyl transacylase, BCKAD E2
MMRRC Submission 042024-MU
Accession Numbers
Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R4737 (G1)
Quality Score225
Status Validated
Chromosome3
Chromosomal Location116513070-116549981 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 116539132 bp
ZygosityHeterozygous
Amino Acid Change Isoleucine to Threonine at position 200 (I200T)
Ref Sequence ENSEMBL: ENSMUSP00000000349 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000000349] [ENSMUST00000197201] [ENSMUST00000199614]
Predicted Effect probably damaging
Transcript: ENSMUST00000000349
AA Change: I200T

PolyPhen 2 Score 0.989 (Sensitivity: 0.72; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000000349
Gene: ENSMUSG00000000340
AA Change: I200T

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: ENSMUST00000196376
Predicted Effect possibly damaging
Transcript: ENSMUST00000197201
AA Change: I19T

PolyPhen 2 Score 0.679 (Sensitivity: 0.86; Specificity: 0.92)
Predicted Effect probably benign
Transcript: ENSMUST00000199614
Meta Mutation Damage Score 0.7408 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 95.3%
Validation Efficiency 100% (94/94)
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: 88 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
A430110L20Rik A G 1: 181,227,819 noncoding transcript Het
Acp2 A T 2: 91,210,723 R419W probably benign Het
Actr5 A G 2: 158,628,071 N207S probably damaging Het
Afap1 G A 5: 35,961,782 V254M probably benign Het
Arfgef1 A T 1: 10,189,611 M544K possibly damaging Het
Arhgap5 A T 12: 52,519,077 M944L probably benign Het
Bnip3l-ps G A 12: 18,216,772 noncoding transcript Het
Carf A G 1: 60,109,318 T58A probably benign Het
Carns1 A G 19: 4,170,928 probably benign Het
Ccp110 T A 7: 118,724,548 I670K possibly damaging Het
Cftr T A 6: 18,299,883 D1218E probably benign Het
Chrna9 A T 5: 65,967,871 T52S probably damaging Het
Chst9 T C 18: 15,452,777 Y243C probably damaging Het
Clk2 A T 3: 89,168,709 H62L probably benign Het
Cntnap2 A T 6: 45,060,317 R10W possibly damaging Het
Cpt1b C T 15: 89,421,406 D369N probably benign Het
Crhr2 G T 6: 55,091,305 H423Q probably damaging Het
D8Ertd738e T A 8: 84,249,521 I33F probably damaging Het
Ddhd1 A T 14: 45,628,821 probably benign Het
Ddx27 A G 2: 167,029,299 I480V probably benign Het
Dpp9 A C 17: 56,198,970 probably null Het
Dpy19l3 A T 7: 35,703,501 M562K probably damaging Het
Dus3l T C 17: 56,767,868 L330P probably damaging Het
Efcab7 C T 4: 99,831,568 Q96* probably null Het
Egfr T C 11: 16,869,231 F254L probably damaging Het
Eml5 C T 12: 98,798,852 V1566M probably damaging Het
Entpd7 T A 19: 43,691,195 Y62* probably null Het
Erbb4 T C 1: 68,343,900 M313V probably damaging Het
Gm5528 A G 1: 72,004,552 noncoding transcript Het
H2-M9 G T 17: 36,640,739 Y281* probably null Het
Hmcn1 T G 1: 150,689,595 K2260N possibly damaging Het
Hnf4a A G 2: 163,564,219 I259V probably benign Het
Ick A G 9: 78,150,654 T162A probably damaging Het
Insm1 A T 2: 146,222,902 T213S probably benign Het
Iqca T C 1: 90,077,822 D488G probably damaging Het
Kdm5a T A 6: 120,406,015 probably benign Het
Kdm7a G C 6: 39,152,839 L468V possibly damaging Het
Lck G A 4: 129,555,984 T229I possibly damaging Het
Lig3 T C 11: 82,787,727 L265P probably damaging Het
Lipa T A 19: 34,501,634 K229* probably null Het
Lrrk1 C T 7: 66,306,873 S418N probably benign Het
Mark2 A G 19: 7,281,232 V126A probably damaging Het
Met T C 6: 17,491,541 C101R probably damaging Het
Mkln1 A T 6: 31,426,799 K85M probably damaging Het
Mst1 A G 9: 108,080,521 R15G probably benign Het
Muc6 T G 7: 141,640,159 probably benign Het
Muc6 G T 7: 141,638,772 T1996N possibly damaging Het
Myo7b T C 18: 31,998,602 S514G probably damaging Het
Narfl A T 17: 25,781,309 H322L probably damaging Het
Nars T C 18: 64,516,427 E11G probably benign Het
Ogdh T A 11: 6,297,044 F23I probably benign Het
Olfr1121 T C 2: 87,372,321 I263T probably damaging Het
Olfr1186 C T 2: 88,526,225 S214F probably damaging Het
Olfr1238 C T 2: 89,406,486 V198I probably benign Het
Olfr1272 A G 2: 90,282,381 S65P probably damaging Het
Olfr584 C T 7: 103,085,914 A127V probably damaging Het
Olfr825 T A 10: 130,162,838 T163S probably benign Het
Olfr979 A T 9: 40,000,422 D268E probably damaging Het
Otub2 T A 12: 103,392,844 L64Q probably benign Het
Pappa2 T C 1: 158,957,012 R143G probably benign Het
Patl2 T A 2: 122,125,306 T250S probably damaging Het
Pcdhac2 C T 18: 37,145,899 T644I possibly damaging Het
Pi4kb C T 3: 95,004,338 T690I probably damaging Het
Pla2g4d T C 2: 120,266,790 Y776C probably benign Het
Plekhh2 C T 17: 84,563,959 S215L probably benign Het
Psmd2 T G 16: 20,659,815 probably benign Het
Ptpn21 T C 12: 98,708,844 E183G probably benign Het
Ptprg T A 14: 12,226,314 D527E probably damaging Het
Rhobtb1 T A 10: 69,279,497 probably null Het
Scel T A 14: 103,572,037 M271K possibly damaging Het
Senp3 A T 11: 69,678,829 C310* probably null Het
Slc25a3 T C 10: 91,122,188 T97A possibly damaging Het
Srsf11 A T 3: 158,026,732 Y82* probably null Het
Tbc1d8 G A 1: 39,402,878 T211I possibly damaging Het
Tbkbp1 T C 11: 97,148,648 E145G probably damaging Het
Tln1 T C 4: 43,540,588 N1471S probably benign Het
Tnn T G 1: 160,146,089 D236A probably damaging Het
Trmt2a C T 16: 18,251,286 probably benign Het
Ttn A T 2: 76,811,243 L5176Q possibly damaging Het
Ubxn10 G A 4: 138,735,948 probably benign Het
Ulk4 G A 9: 121,073,872 Q1180* probably null Het
Usp43 T A 11: 67,855,505 K1120N probably damaging Het
Uspl1 T A 5: 149,194,339 L244Q possibly damaging Het
Vmn1r32 T C 6: 66,553,645 H49R probably damaging Het
Vmn2r4 T C 3: 64,409,963 D118G probably damaging Het
Vwce A G 19: 10,650,579 I468V probably benign Het
Zbtb7c G T 18: 76,146,154 R561L probably benign Het
Zfp956 T C 6: 47,962,542 S175P probably damaging Het
Other mutations in Dbt
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00546:Dbt APN 3 116539281 missense probably benign
IGL00660:Dbt APN 3 116546295 missense probably damaging 1.00
IGL00839:Dbt APN 3 116546114 missense probably benign 0.21
IGL00840:Dbt APN 3 116546114 missense probably benign 0.21
IGL00841:Dbt APN 3 116546114 missense probably benign 0.21
IGL00852:Dbt APN 3 116546114 missense probably benign 0.21
IGL00861:Dbt APN 3 116546114 missense probably benign 0.21
IGL00955:Dbt APN 3 116546114 missense probably benign 0.21
IGL00956:Dbt APN 3 116546114 missense probably benign 0.21
IGL01475:Dbt APN 3 116520259 missense possibly damaging 0.92
IGL01521:Dbt APN 3 116533383 missense probably benign 0.00
IGL01806:Dbt APN 3 116533305 missense probably damaging 1.00
IGL03288:Dbt APN 3 116548198 makesense probably null
R0025:Dbt UTSW 3 116534783 missense probably benign 0.22
R0066:Dbt UTSW 3 116543829 missense probably benign 0.00
R0066:Dbt UTSW 3 116543829 missense probably benign 0.00
R0190:Dbt UTSW 3 116539087 critical splice acceptor site probably null
R1650:Dbt UTSW 3 116534732 splice site probably null
R1750:Dbt UTSW 3 116546294 missense probably benign 0.18
R2130:Dbt UTSW 3 116539124 missense probably damaging 1.00
R2131:Dbt UTSW 3 116539124 missense probably damaging 1.00
R2133:Dbt UTSW 3 116539124 missense probably damaging 1.00
R2897:Dbt UTSW 3 116523412 missense probably damaging 1.00
R3442:Dbt UTSW 3 116548191 missense probably benign
R4241:Dbt UTSW 3 116533296 missense probably damaging 1.00
R4681:Dbt UTSW 3 116533314 missense probably damaging 1.00
R4724:Dbt UTSW 3 116533296 missense probably damaging 1.00
R4736:Dbt UTSW 3 116539132 missense probably damaging 0.99
R4738:Dbt UTSW 3 116539132 missense probably damaging 0.99
R4740:Dbt UTSW 3 116539132 missense probably damaging 0.99
R4809:Dbt UTSW 3 116546343 missense probably damaging 1.00
R4823:Dbt UTSW 3 116523387 missense probably damaging 1.00
R4861:Dbt UTSW 3 116548078 missense probably benign 0.00
R4861:Dbt UTSW 3 116548078 missense probably benign 0.00
R5148:Dbt UTSW 3 116528244 intron probably benign
R5327:Dbt UTSW 3 116528571 intron probably benign
R5700:Dbt UTSW 3 116520303 missense probably damaging 0.97
R5931:Dbt UTSW 3 116523425 missense possibly damaging 0.80
R6463:Dbt UTSW 3 116539760 missense possibly damaging 0.51
R7841:Dbt UTSW 3 116546097 missense possibly damaging 0.85
R8122:Dbt UTSW 3 116520242 nonsense probably null
R8385:Dbt UTSW 3 116523390 missense probably damaging 1.00
RF008:Dbt UTSW 3 116548068 nonsense probably null
RF016:Dbt UTSW 3 116539714 missense probably damaging 1.00
Z1177:Dbt UTSW 3 116546091 missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- TCCTCAAACAAAGTTACTGGGG -3'
(R):5'- TGCTGTTACCTGTCACTGGC -3'

Sequencing Primer
(F):5'- TGGCCTGGAACTCAGCCATC -3'
(R):5'- GTCACTGGCTCTGTTCGGTC -3'
Posted On2015-11-11