Incidental Mutation 'R7220:Best1'
ID561780
Institutional Source Beutler Lab
Gene Symbol Best1
Ensembl Gene ENSMUSG00000037418
Gene Namebestrophin 1
Synonymsbest macular dystrophy, mBest1, Vmd2
MMRRC Submission
Accession Numbers
Is this an essential gene? Non essential (E-score: 0.000) question?
Stock #R7220 (G1)
Quality Score225.009
Status Not validated
Chromosome19
Chromosomal Location9985174-10001633 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to T at 9992115 bp
ZygosityHeterozygous
Amino Acid Change Methionine to Lysine at position 193 (M193K)
Ref Sequence ENSEMBL: ENSMUSP00000113053 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000117346]
Predicted Effect probably benign
Transcript: ENSMUST00000117346
AA Change: M193K

PolyPhen 2 Score 0.305 (Sensitivity: 0.90; Specificity: 0.89)
SMART Domains Protein: ENSMUSP00000113053
Gene: ENSMUSG00000037418
AA Change: M193K

DomainStartEndE-ValueType
Pfam:Bestrophin 8 316 8.5e-111 PFAM
low complexity region 476 488 N/A INTRINSIC
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.6%
  • 20x: 98.7%
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 bestrophin gene family. This small gene family is characterized by proteins with a highly conserved N-terminus with four to six transmembrane domains. Bestrophins may form chloride ion channels or may regulate voltage-gated L-type calcium-ion channels. Bestrophins are generally believed to form calcium-activated chloride-ion channels in epithelial cells but they have also been shown to be highly permeable to bicarbonate ion transport in retinal tissue. Mutations in this gene are responsible for juvenile-onset vitelliform macular dystrophy (VMD2), also known as Best macular dystrophy, in addition to adult-onset vitelliform macular dystrophy (AVMD) and other retinopathies. Alternative splicing results in multiple variants encoding distinct isoforms.[provided by RefSeq, Nov 2008]
PHENOTYPE: Homozygous null mutations of this gene generally result in abnormal retinal pigment epithelium morphology and/or altered eye electrophysiology. Homozygotes for a null allele show male subfertility associated with abnormal sperm morphology and reduced motility in the absence of retinal pathology. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 72 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1110008L16Rik G A 12: 55,304,415 V170M possibly damaging Het
5031439G07Rik A T 15: 84,953,136 H325Q probably damaging Het
Aasdh T C 5: 76,901,925 I75V probably benign Het
Abca14 G A 7: 120,227,444 D438N possibly damaging Het
Abca8a T A 11: 110,089,967 I82F probably benign Het
Abca8b G T 11: 109,981,717 N19K probably damaging Het
Acan A G 7: 79,108,148 N506S Het
Alox12e C A 11: 70,315,905 R652L probably benign Het
Atad3a A G 4: 155,754,041 V173A probably benign Het
Atl3 A G 19: 7,529,068 K326R probably null Het
Atm G T 9: 53,511,917 C636* probably null Het
Atp2c2 G A 8: 119,745,561 M451I probably benign Het
B020004J07Rik A G 4: 101,837,368 F106S probably benign Het
Bmper G T 9: 23,399,355 G362C probably damaging Het
Brd4 T A 17: 32,225,583 Y139F unknown Het
Bzw2 A T 12: 36,123,951 I108N possibly damaging Het
Cbs C A 17: 31,619,217 V353L probably benign Het
Ceacam20 A G 7: 19,967,753 T22A probably damaging Het
Ckap2l C T 2: 129,275,516 E580K probably damaging Het
Ckmt1 T C 2: 121,358,893 L15P possibly damaging Het
Clec18a G T 8: 111,081,572 P66H probably benign Het
Cma1 G T 14: 55,942,663 T95K probably benign Het
Csmd3 A G 15: 48,457,598 V272A probably damaging Het
Ctnna3 A T 10: 64,834,589 E632D probably benign Het
Ctsc T C 7: 88,297,153 L130P probably damaging Het
Frmpd2 A T 14: 33,507,475 R339S probably damaging Het
Frrs1 C A 3: 116,880,776 S69* probably null Het
Gcc2 A T 10: 58,280,594 E1108D probably benign Het
Gtf2a1 A T 12: 91,567,724 M252K probably benign Het
H2-Ob T C 17: 34,241,260 F115S probably damaging Het
Ighv1-53 T C 12: 115,158,515 N80S probably benign Het
Ighv1-67 T C 12: 115,604,046 K82R probably benign Het
Ints1 A T 5: 139,762,073 I1193N possibly damaging Het
Kmt2c A G 5: 25,344,925 F1353L probably damaging Het
Luc7l C T 17: 26,253,245 probably benign Het
Man1a A C 10: 53,920,235 S454A possibly damaging Het
Mars2 C A 1: 55,238,063 A275D probably damaging Het
Nrde2 A G 12: 100,130,919 V874A probably benign Het
Ociad1 A G 5: 73,313,466 T244A probably benign Het
Olfr139 A T 11: 74,044,763 D170E possibly damaging Het
Olfr25 A T 9: 38,329,750 L51F probably damaging Het
Olfr418 A G 1: 173,270,244 Y23C possibly damaging Het
Ovca2 A G 11: 75,178,675 C41R possibly damaging Het
Pacsin2 A T 15: 83,385,059 D11E probably damaging Het
Pcdh15 G A 10: 74,342,609 S566N possibly damaging Het
Pde3b A G 7: 114,536,062 I1038M probably damaging Het
Pi16 C A 17: 29,319,234 P7Q possibly damaging Het
Pkhd1 T A 1: 20,523,126 T1588S possibly damaging Het
Ppig A G 2: 69,749,976 D618G unknown Het
Prss51 A T 14: 64,095,995 K18* probably null Het
Ptpra T A 2: 130,544,497 D622E probably damaging Het
Ptprs A T 17: 56,418,988 F1431L probably benign Het
Pxdn A G 12: 29,994,480 I486V probably benign Het
Rnpc3 G A 3: 113,628,355 A77V probably benign Het
Rtl10 T A 16: 18,501,276 C85* probably null Het
Skint10 A G 4: 112,728,973 S149P probably benign Het
Slc17a8 A C 10: 89,576,413 V570G probably benign Het
Slc25a42 A T 8: 70,189,498 V98E probably damaging Het
Smco2 A G 6: 146,858,865 E73G probably benign Het
Ss18 T C 18: 14,679,420 Y38C probably damaging Het
Sspo T A 6: 48,476,606 C2909* probably null Het
Tbccd1 A G 16: 22,833,997 Y125H probably benign Het
Tdrd9 A G 12: 112,014,454 T446A probably damaging Het
Tecta G T 9: 42,343,887 Q1672K probably benign Het
Tek G C 4: 94,804,304 W216C probably damaging Het
Timm17a C T 1: 135,313,575 probably null Het
Tlr4 A T 4: 66,839,951 H327L probably benign Het
Trim33 T C 3: 103,326,793 I449T possibly damaging Het
Vmn1r57 A G 7: 5,220,560 N28S probably null Het
Vmn2r117 T A 17: 23,477,203 H410L probably damaging Het
Vmn2r16 A G 5: 109,360,906 E500G probably damaging Het
Wif1 A G 10: 121,090,114 N245S possibly damaging Het
Other mutations in Best1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01563:Best1 APN 19 9986735 missense probably benign 0.22
IGL02129:Best1 APN 19 9992921 missense probably benign
IGL02310:Best1 APN 19 9989152 missense probably benign 0.00
IGL02470:Best1 APN 19 9992976 missense probably benign 0.43
IGL02505:Best1 APN 19 9989150 missense probably damaging 1.00
R0366:Best1 UTSW 19 9992053 splice site probably null
R1476:Best1 UTSW 19 9990489 nonsense probably null
R1674:Best1 UTSW 19 9993226 critical splice donor site probably null
R2091:Best1 UTSW 19 9992079 missense probably benign 0.27
R2516:Best1 UTSW 19 9993311 nonsense probably null
R2866:Best1 UTSW 19 9986221 missense probably benign
R4693:Best1 UTSW 19 9997135 missense probably damaging 1.00
R4851:Best1 UTSW 19 9991698 missense probably damaging 1.00
R4895:Best1 UTSW 19 9992771 missense probably benign 0.00
R5633:Best1 UTSW 19 9992103 missense probably benign 0.29
R5700:Best1 UTSW 19 9997199 unclassified probably benign
R5837:Best1 UTSW 19 9989119 splice site probably null
R6893:Best1 UTSW 19 9997082 missense probably damaging 1.00
R7021:Best1 UTSW 19 9986779 missense probably benign
R7267:Best1 UTSW 19 9986813 missense probably benign 0.00
R7284:Best1 UTSW 19 9986373 critical splice acceptor site probably null
X0065:Best1 UTSW 19 9986975 missense probably benign 0.03
Predicted Primers PCR Primer
(F):5'- CCGTGGGCTGTAGAATCTTG -3'
(R):5'- ACTGGGACTCAATAATTTTGTGCG -3'

Sequencing Primer
(F):5'- TCATATACTACCAGGACGGG -3'
(R):5'- GGACTCAATAATTTTGTGCGTTGAAG -3'
Posted On2019-06-26