Incidental Mutation 'R2050:Cacnb4'
ID 226305
Institutional Source Beutler Lab
Gene Symbol Cacnb4
Ensembl Gene ENSMUSG00000017412
Gene Name calcium channel, voltage-dependent, beta 4 subunit
Synonyms Cchb4, 3110038O15Rik
MMRRC Submission 040057-MU
Accession Numbers
Essential gene? Probably non essential (E-score: 0.227) question?
Stock # R2050 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 52318332-52566816 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 52359598 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Leucine at position 104 (I104L)
Ref Sequence ENSEMBL: ENSMUSP00000099821 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000078324] [ENSMUST00000102760] [ENSMUST00000102761] [ENSMUST00000178799]
AlphaFold Q8R0S4
Predicted Effect probably damaging
Transcript: ENSMUST00000078324
AA Change: I137L

PolyPhen 2 Score 0.985 (Sensitivity: 0.74; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000077438
Gene: ENSMUSG00000017412
AA Change: I137L

DomainStartEndE-ValueType
Pfam:VGCC_beta4Aa_N 49 90 5.4e-27 PFAM
SH3 94 159 4.96e-2 SMART
low complexity region 172 189 N/A INTRINSIC
low complexity region 193 206 N/A INTRINSIC
GuKc 217 398 3.46e-37 SMART
low complexity region 465 481 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000102760
AA Change: I104L

PolyPhen 2 Score 0.992 (Sensitivity: 0.70; Specificity: 0.97)
SMART Domains Protein: ENSMUSP00000099821
Gene: ENSMUSG00000017412
AA Change: I104L

DomainStartEndE-ValueType
Pfam:VGCC_beta4Aa_N 16 57 9.4e-28 PFAM
SH3 61 126 4.96e-2 SMART
low complexity region 139 156 N/A INTRINSIC
low complexity region 160 173 N/A INTRINSIC
GuKc 184 365 3.46e-37 SMART
low complexity region 432 448 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000102761
AA Change: I91L

PolyPhen 2 Score 0.959 (Sensitivity: 0.78; Specificity: 0.95)
SMART Domains Protein: ENSMUSP00000099822
Gene: ENSMUSG00000017412
AA Change: I91L

DomainStartEndE-ValueType
Pfam:VGCC_beta4Aa_N 3 44 4.8e-27 PFAM
SH3 48 113 4.96e-2 SMART
low complexity region 126 143 N/A INTRINSIC
low complexity region 147 160 N/A INTRINSIC
GuKc 171 352 3.46e-37 SMART
low complexity region 419 435 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000178799
AA Change: I137L

PolyPhen 2 Score 0.981 (Sensitivity: 0.75; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000136811
Gene: ENSMUSG00000017412
AA Change: I137L

DomainStartEndE-ValueType
Pfam:VGCC_beta4Aa_N 49 90 1.3e-24 PFAM
SH3 94 159 4.96e-2 SMART
low complexity region 172 189 N/A INTRINSIC
GuKc 217 398 3.46e-37 SMART
low complexity region 465 481 N/A INTRINSIC
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.3%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of the beta subunit family of voltage-dependent calcium channel complex proteins. Calcium channels mediate the influx of calcium ions into the cell upon membrane polarization and consist of a complex of alpha-1, alpha-2/delta, beta, and gamma subunits in a 1:1:1:1 ratio. Various versions of each of these subunits exist, either expressed from similar genes or the result of alternative splicing. The protein encoded by this locus plays an important role in calcium channel function by modulating G protein inhibition, increasing peak calcium current, controlling the alpha-1 subunit membrane targeting and shifting the voltage dependence of activation and inactivation. Certain mutations in this gene have been associated with idiopathic generalized epilepsy (IGE), juvenile myoclonic epilepsy (JME), and episodic ataxia, type 5. [provided by RefSeq, Aug 2016]
PHENOTYPE: Homozygous mutants have lethargic behavior, unstable gait and seizures, with peripheral motor nerves showing reduced conduction velocity and prolonged distal latency. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 57 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Agap2 G T 10: 126,916,130 (GRCm39) E214* probably null Het
Angpt2 G T 8: 18,755,673 (GRCm39) P265T probably benign Het
Apc2 C A 10: 80,143,443 (GRCm39) probably null Het
Arpc1b C T 5: 145,062,729 (GRCm39) P250S probably damaging Het
Atxn10 T G 15: 85,249,513 (GRCm39) V115G probably benign Het
Bace2 T A 16: 97,213,336 (GRCm39) C100S probably damaging Het
Bpifb9b T C 2: 154,151,524 (GRCm39) S82P possibly damaging Het
Cacna1g A G 11: 94,300,300 (GRCm39) S2157P probably damaging Het
Ccdc121 T C 5: 31,643,402 (GRCm39) I44T possibly damaging Het
Cdh6 T A 15: 13,057,587 (GRCm39) M245L probably benign Het
Celsr1 A C 15: 85,914,748 (GRCm39) V1075G probably benign Het
Cfap61 T C 2: 145,987,393 (GRCm39) F1065L probably benign Het
Col1a2 G A 6: 4,518,822 (GRCm39) probably benign Het
Colgalt1 T C 8: 72,070,330 (GRCm39) probably null Het
Ctnnal1 A T 4: 56,835,350 (GRCm39) V309D probably benign Het
D7Ertd443e T A 7: 133,868,527 (GRCm39) E659D probably damaging Het
Dab2 T C 15: 6,464,696 (GRCm39) Y516H possibly damaging Het
Dnah14 T C 1: 181,580,127 (GRCm39) L3099P probably damaging Het
Frem3 A G 8: 81,341,520 (GRCm39) E1271G probably damaging Het
Grap2 A G 15: 80,530,444 (GRCm39) H188R probably benign Het
Grin2c T C 11: 115,148,245 (GRCm39) D344G possibly damaging Het
Hmcn2 T C 2: 31,225,448 (GRCm39) M119T probably damaging Het
Hsd11b2 A G 8: 106,249,992 (GRCm39) I368V probably benign Het
Hsh2d G A 8: 72,954,304 (GRCm39) D229N probably benign Het
Ifit1bl2 T A 19: 34,596,870 (GRCm39) N249Y possibly damaging Het
Igsf8 T A 1: 172,146,432 (GRCm39) Y36N probably damaging Het
Lrp12 G A 15: 39,735,985 (GRCm39) S649L probably damaging Het
Map2 T C 1: 66,453,473 (GRCm39) S788P probably damaging Het
Mast4 T C 13: 102,887,917 (GRCm39) D1164G probably damaging Het
Mcm9 A G 10: 53,488,921 (GRCm39) probably null Het
Myo5a G A 9: 75,054,156 (GRCm39) E355K probably benign Het
Myo9b T A 8: 71,743,194 (GRCm39) V85E probably damaging Het
Nbeal1 G A 1: 60,332,123 (GRCm39) probably null Het
Nlrx1 A T 9: 44,174,077 (GRCm39) W375R probably damaging Het
Pik3c2a A G 7: 116,016,686 (GRCm39) probably null Het
Plch2 A G 4: 155,085,275 (GRCm39) M272T probably benign Het
Plk4 T A 3: 40,764,815 (GRCm39) M603K probably benign Het
Rfx7 T A 9: 72,524,748 (GRCm39) V646E probably benign Het
Slc28a2b T C 2: 122,353,349 (GRCm39) S510P probably benign Het
Slc9a1 A G 4: 133,143,645 (GRCm39) H377R probably benign Het
Snrnp70 A C 7: 45,036,724 (GRCm39) Y61* probably null Het
Spatc1l T C 10: 76,399,892 (GRCm39) L138P probably damaging Het
Spink5 T C 18: 44,140,825 (GRCm39) probably null Het
Sptan1 T A 2: 29,892,250 (GRCm39) S1055T probably benign Het
Tas2r104 T A 6: 131,662,083 (GRCm39) M209L probably damaging Het
Tdrd12 C T 7: 35,228,672 (GRCm39) V17I probably damaging Het
Tmem129 C A 5: 33,815,126 (GRCm39) A16S probably benign Het
Tmtc1 T C 6: 148,164,381 (GRCm39) E584G probably damaging Het
Trank1 C A 9: 111,193,856 (GRCm39) H627N probably damaging Het
Trio T C 15: 27,852,031 (GRCm39) D820G possibly damaging Het
Trpt1 T A 19: 6,975,452 (GRCm39) N98K probably damaging Het
Ube4b A T 4: 149,429,069 (GRCm39) F857I probably damaging Het
Vmn2r45 A G 7: 8,475,021 (GRCm39) V669A probably damaging Het
Vmn2r71 A G 7: 85,273,681 (GRCm39) I832V probably damaging Het
Zbtb20 T A 16: 43,429,975 (GRCm39) probably null Het
Zfyve9 A C 4: 108,575,800 (GRCm39) M427R probably benign Het
Zfyve9 A T 4: 108,576,500 (GRCm39) F194I possibly damaging Het
Other mutations in Cacnb4
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00961:Cacnb4 APN 2 52,367,724 (GRCm39) missense possibly damaging 0.46
IGL01328:Cacnb4 APN 2 52,354,637 (GRCm39) missense probably damaging 1.00
IGL01801:Cacnb4 APN 2 52,324,723 (GRCm39) missense probably benign 0.15
IGL01992:Cacnb4 APN 2 52,355,682 (GRCm39) missense probably damaging 1.00
IGL03030:Cacnb4 APN 2 52,364,894 (GRCm39) missense probably damaging 1.00
R0789:Cacnb4 UTSW 2 52,341,895 (GRCm39) missense probably damaging 1.00
R1069:Cacnb4 UTSW 2 52,345,623 (GRCm39) missense probably damaging 1.00
R1646:Cacnb4 UTSW 2 52,364,912 (GRCm39) missense possibly damaging 0.87
R3939:Cacnb4 UTSW 2 52,359,501 (GRCm39) missense probably damaging 1.00
R3941:Cacnb4 UTSW 2 52,359,501 (GRCm39) missense probably damaging 1.00
R4455:Cacnb4 UTSW 2 52,355,665 (GRCm39) missense probably damaging 1.00
R4497:Cacnb4 UTSW 2 52,367,783 (GRCm39) missense probably damaging 1.00
R4707:Cacnb4 UTSW 2 52,364,927 (GRCm39) missense probably benign 0.45
R4824:Cacnb4 UTSW 2 52,565,822 (GRCm39) missense probably benign 0.00
R4957:Cacnb4 UTSW 2 52,448,303 (GRCm39) missense probably damaging 0.99
R5913:Cacnb4 UTSW 2 52,324,796 (GRCm39) intron probably benign
R6372:Cacnb4 UTSW 2 52,324,679 (GRCm39) missense probably benign 0.00
R6945:Cacnb4 UTSW 2 52,364,966 (GRCm39) missense probably damaging 1.00
R7557:Cacnb4 UTSW 2 52,359,579 (GRCm39) missense probably damaging 1.00
R7821:Cacnb4 UTSW 2 52,324,520 (GRCm39) missense possibly damaging 0.91
R8015:Cacnb4 UTSW 2 52,354,655 (GRCm39) missense probably damaging 1.00
R8043:Cacnb4 UTSW 2 52,355,663 (GRCm39) missense probably damaging 1.00
R8181:Cacnb4 UTSW 2 52,364,997 (GRCm39) missense probably benign 0.00
R8376:Cacnb4 UTSW 2 52,354,665 (GRCm39) nonsense probably null
R8466:Cacnb4 UTSW 2 52,354,679 (GRCm39) missense probably damaging 1.00
R8765:Cacnb4 UTSW 2 52,327,001 (GRCm39) missense probably damaging 0.99
R9018:Cacnb4 UTSW 2 52,324,706 (GRCm39) missense probably benign 0.26
R9574:Cacnb4 UTSW 2 52,327,016 (GRCm39) missense probably damaging 1.00
R9624:Cacnb4 UTSW 2 52,364,942 (GRCm39) missense probably benign 0.09
R9778:Cacnb4 UTSW 2 52,359,615 (GRCm39) missense probably damaging 0.96
Z1176:Cacnb4 UTSW 2 52,565,824 (GRCm39) critical splice acceptor site probably null
Predicted Primers PCR Primer
(F):5'- TGGAAAGAACCCAACTTCCTG -3'
(R):5'- ACAAAACCACGACCTTTGTGG -3'

Sequencing Primer
(F):5'- GACAATATTGCCCAATTTTCCCAC -3'
(R):5'- GGTCTCTATGTCCTGTGTGCAC -3'
Posted On 2014-09-17