Incidental Mutation 'R6959:Ttc21b'
ID 541631
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 045069-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R6959 (G1)
Quality Score 225.009
Status Validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to T at 66061656 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Methionine to Lysine at position 498 (M498K)
Ref Sequence ENSEMBL: ENSMUSP00000099779 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000102718] [ENSMUST00000125446]
AlphaFold Q0HA38
Predicted Effect probably benign
Transcript: ENSMUST00000102718
AA Change: M498K

PolyPhen 2 Score 0.055 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: M498K

DomainStartEndE-ValueType
Blast:TPR 109 141 5e-12 BLAST
Blast:TPR 178 211 3e-12 BLAST
TPR 324 357 4.21e1 SMART
low complexity region 379 390 N/A INTRINSIC
TPR 492 525 8.51e0 SMART
TPR 526 559 5.92e1 SMART
TPR 563 596 7.69e1 SMART
TPR 721 754 3.07e-5 SMART
TPR 755 788 9.45e0 SMART
TPR 790 821 9.24e1 SMART
TPR 830 863 3.05e0 SMART
TPR 883 916 1.55e-1 SMART
TPR 917 950 8.74e0 SMART
TPR 951 984 6.75e1 SMART
Blast:TPR 1023 1054 5e-13 BLAST
Blast:TPR 1156 1189 1e-12 BLAST
TPR 1196 1229 9.7e0 SMART
TPR 1265 1298 1.02e1 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000125446
AA Change: M498K

PolyPhen 2 Score 0.033 (Sensitivity: 0.95; Specificity: 0.82)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: M498K

DomainStartEndE-ValueType
Blast:TPR 108 141 3e-12 BLAST
Blast:TPR 178 211 3e-12 BLAST
TPR 324 357 4.21e1 SMART
low complexity region 379 390 N/A INTRINSIC
TPR 492 525 8.51e0 SMART
TPR 526 559 5.92e1 SMART
TPR 563 596 7.69e1 SMART
TPR 721 754 3.07e-5 SMART
TPR 755 788 9.45e0 SMART
TPR 790 821 9.24e1 SMART
TPR 830 863 3.05e0 SMART
TPR 883 916 1.55e-1 SMART
TPR 917 950 8.74e0 SMART
TPR 951 984 6.75e1 SMART
Blast:TPR 1023 1054 4e-13 BLAST
Blast:TPR 1156 1189 9e-13 BLAST
TPR 1196 1229 9.7e0 SMART
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.8%
  • 10x: 99.0%
  • 20x: 96.5%
Validation Efficiency 94% (61/65)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of TTC21 family, containing several tetratricopeptide repeat (TPR) domains. This protein is localized to the cilium axoneme, and may play a role in retrograde intraflagellar transport in cilia. Mutations in this gene are associated with various ciliopathies, nephronophthisis 12, and asphyxiating thoracic dystrophy 4. [provided by RefSeq, Oct 2011]
PHENOTYPE: Homozygous mutation of this gene is embryonic lethal. Mutant embryos exhibit several deformities including polydactyly, microphthalmia, irregular shape of the long bones, rib fusion and truncation, neural tube defects, and abnormal brain structure. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 64 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4930544D05Rik G A 11: 70,507,485 (GRCm39) G177R probably damaging Het
Arhgef12 T C 9: 42,927,249 (GRCm39) T292A probably benign Het
Atp11a T A 8: 12,870,467 (GRCm39) D173E probably damaging Het
Bltp1 T G 3: 37,021,338 (GRCm39) V2154G probably damaging Het
Btnl2 G A 17: 34,582,333 (GRCm39) V300M possibly damaging Het
Calcrl A T 2: 84,200,428 (GRCm39) N117K possibly damaging Het
Castor2 T C 5: 134,164,052 (GRCm39) S83P probably damaging Het
Ccdc196 A G 12: 78,249,070 (GRCm39) K139E probably damaging Het
Ccl22 A T 8: 95,473,528 (GRCm39) probably null Het
Cd200r1 T A 16: 44,610,539 (GRCm39) S216T probably damaging Het
Cdk5rap2 G A 4: 70,278,906 (GRCm39) probably null Het
Cfap157 A G 2: 32,674,260 (GRCm39) I47T probably damaging Het
Chodl G A 16: 78,743,572 (GRCm39) V220I probably damaging Het
Cntnap5b A G 1: 100,202,197 (GRCm39) E348G probably benign Het
Cstf3 A G 2: 104,479,807 (GRCm39) T225A probably benign Het
Duoxa1 T C 2: 122,134,318 (GRCm39) S267G probably damaging Het
Epb41l1 G A 2: 156,341,507 (GRCm39) S164N probably benign Het
Fat3 T C 9: 15,908,181 (GRCm39) D2607G possibly damaging Het
Galnt5 A G 2: 57,889,231 (GRCm39) D277G probably benign Het
Galnt6 A G 15: 100,612,006 (GRCm39) I212T probably damaging Het
Gm45861 T C 8: 28,038,213 (GRCm39) probably null Het
Gm5478 T C 15: 101,553,883 (GRCm39) D243G probably damaging Het
Gse1 A G 8: 121,297,710 (GRCm39) probably benign Het
Hspg2 A T 4: 137,246,600 (GRCm39) Q1096L probably benign Het
Hycc1 T C 5: 24,196,754 (GRCm39) I45V possibly damaging Het
Idh3b A G 2: 130,123,447 (GRCm39) V181A probably damaging Het
Igf2bp3 T C 6: 49,094,082 (GRCm39) probably null Het
Ikzf2 A G 1: 69,577,929 (GRCm39) *382Q probably null Het
Impg2 A C 16: 56,088,693 (GRCm39) H1073P probably benign Het
Incenp T C 19: 9,854,134 (GRCm39) E639G unknown Het
Kcne4 A G 1: 78,795,603 (GRCm39) M84V probably benign Het
Ktn1 T A 14: 47,957,713 (GRCm39) F1004I probably damaging Het
Lrit1 G C 14: 36,782,052 (GRCm39) V242L probably damaging Het
Malrd1 A G 2: 16,222,820 (GRCm39) I2040V probably damaging Het
Mau2 T C 8: 70,485,878 (GRCm39) D110G probably damaging Het
Mei1 T C 15: 82,009,076 (GRCm39) V1237A probably benign Het
Mfsd11 T G 11: 116,752,495 (GRCm39) probably null Het
Ncapd2 A G 6: 125,145,883 (GRCm39) F1293L probably benign Het
Nf1 A G 11: 79,440,294 (GRCm39) T280A probably damaging Het
Obscn G T 11: 58,928,411 (GRCm39) A6085E probably damaging Het
Or51b6b T A 7: 103,310,050 (GRCm39) I136F probably damaging Het
Pdzd2 C T 15: 12,375,993 (GRCm39) A1381T probably benign Het
Pramel41 T A 5: 94,594,891 (GRCm39) N250K possibly damaging Het
Ralgapa2 A G 2: 146,184,621 (GRCm39) V1462A probably damaging Het
Rbx1 T A 15: 81,355,163 (GRCm39) C56* probably null Het
Reln A G 5: 22,181,562 (GRCm39) S1774P probably damaging Het
Ros1 T A 10: 52,040,090 (GRCm39) E300D probably damaging Het
Sarnp T C 10: 128,684,137 (GRCm39) V111A possibly damaging Het
Scube1 G T 15: 83,513,636 (GRCm39) Q345K probably benign Het
Slc18b1 A G 10: 23,701,942 (GRCm39) probably null Het
Slc37a2 T A 9: 37,152,630 (GRCm39) T64S probably benign Het
Slit2 A G 5: 48,395,727 (GRCm39) D710G possibly damaging Het
Srp72 T A 5: 77,142,070 (GRCm39) Y375N possibly damaging Het
Tmco4 T A 4: 138,737,810 (GRCm39) V135D probably damaging Het
Trim62 A G 4: 128,802,955 (GRCm39) D335G probably damaging Het
Tsfm T C 10: 126,858,778 (GRCm39) M196V probably benign Het
Tspan10 T A 11: 120,335,522 (GRCm39) C211S probably damaging Het
Ttc6 A T 12: 57,704,928 (GRCm39) probably null Het
Ttll1 G T 15: 83,386,397 (GRCm39) Y69* probably null Het
Usp28 T A 9: 48,912,842 (GRCm39) L31H probably damaging Het
Vmn2r86 A G 10: 130,282,400 (GRCm39) S739P probably damaging Het
Wdr64 T A 1: 175,533,555 (GRCm39) F64I probably damaging Het
Ywhaq A G 12: 21,446,281 (GRCm39) probably null Het
Zfr T C 15: 12,150,409 (GRCm39) S459P probably damaging Het
Other mutations in Ttc21b
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00465:Ttc21b APN 2 66,073,119 (GRCm39) missense probably benign 0.00
IGL00467:Ttc21b APN 2 66,018,708 (GRCm39) missense probably damaging 1.00
IGL00721:Ttc21b APN 2 66,057,122 (GRCm39) missense probably benign 0.06
IGL00837:Ttc21b APN 2 66,065,915 (GRCm39) critical splice donor site probably null
IGL01317:Ttc21b APN 2 66,018,700 (GRCm39) missense probably benign 0.00
IGL01485:Ttc21b APN 2 66,082,234 (GRCm39) splice site probably benign
IGL01739:Ttc21b APN 2 66,068,200 (GRCm39) missense probably benign
IGL02282:Ttc21b APN 2 66,022,081 (GRCm39) missense probably damaging 0.96
IGL02431:Ttc21b APN 2 66,082,229 (GRCm39) splice site probably benign
IGL02478:Ttc21b APN 2 66,018,624 (GRCm39) missense probably benign 0.05
IGL02487:Ttc21b APN 2 66,065,500 (GRCm39) missense probably benign 0.02
IGL03327:Ttc21b APN 2 66,068,192 (GRCm39) missense possibly damaging 0.92
IGL03346:Ttc21b APN 2 66,068,192 (GRCm39) missense possibly damaging 0.92
plus-sized UTSW 2 66,073,023 (GRCm39) missense probably damaging 1.00
puffer UTSW 2 66,057,244 (GRCm39) missense probably benign 0.12
PIT4696001:Ttc21b UTSW 2 66,061,563 (GRCm39) splice site probably null
R0049:Ttc21b UTSW 2 66,053,908 (GRCm39) missense probably damaging 1.00
R0049:Ttc21b UTSW 2 66,053,908 (GRCm39) missense probably damaging 1.00
R0373:Ttc21b UTSW 2 66,018,670 (GRCm39) missense probably damaging 0.99
R0440:Ttc21b UTSW 2 66,066,726 (GRCm39) missense probably benign 0.03
R0504:Ttc21b UTSW 2 66,053,142 (GRCm39) splice site probably benign
R0600:Ttc21b UTSW 2 66,069,914 (GRCm39) missense probably damaging 0.99
R0621:Ttc21b UTSW 2 66,056,355 (GRCm39) missense probably benign 0.07
R0633:Ttc21b UTSW 2 66,066,577 (GRCm39) missense probably benign
R0863:Ttc21b UTSW 2 66,073,117 (GRCm39) missense probably benign
R1617:Ttc21b UTSW 2 66,056,379 (GRCm39) missense probably benign 0.22
R1837:Ttc21b UTSW 2 66,028,106 (GRCm39) missense probably benign 0.01
R1844:Ttc21b UTSW 2 66,053,921 (GRCm39) nonsense probably null
R2120:Ttc21b UTSW 2 66,057,098 (GRCm39) missense probably benign 0.12
R2205:Ttc21b UTSW 2 66,065,467 (GRCm39) missense possibly damaging 0.51
R2392:Ttc21b UTSW 2 66,037,794 (GRCm39) critical splice donor site probably null
R3689:Ttc21b UTSW 2 66,054,488 (GRCm39) missense probably benign 0.22
R3810:Ttc21b UTSW 2 66,082,577 (GRCm39) critical splice acceptor site probably null
R3847:Ttc21b UTSW 2 66,073,023 (GRCm39) missense probably damaging 1.00
R3897:Ttc21b UTSW 2 66,065,413 (GRCm39) missense probably benign 0.01
R4561:Ttc21b UTSW 2 66,016,562 (GRCm39) missense probably damaging 1.00
R4671:Ttc21b UTSW 2 66,057,257 (GRCm39) missense possibly damaging 0.66
R5161:Ttc21b UTSW 2 66,059,367 (GRCm39) missense probably damaging 0.98
R5274:Ttc21b UTSW 2 66,066,627 (GRCm39) missense possibly damaging 0.89
R5594:Ttc21b UTSW 2 66,066,579 (GRCm39) missense probably benign 0.39
R6210:Ttc21b UTSW 2 66,066,698 (GRCm39) missense probably benign 0.00
R6305:Ttc21b UTSW 2 66,018,614 (GRCm39) missense probably damaging 0.99
R6456:Ttc21b UTSW 2 66,018,675 (GRCm39) missense probably damaging 0.97
R6482:Ttc21b UTSW 2 66,057,244 (GRCm39) missense probably benign 0.12
R6645:Ttc21b UTSW 2 66,066,721 (GRCm39) missense probably benign 0.01
R6800:Ttc21b UTSW 2 66,038,994 (GRCm39) splice site probably null
R6815:Ttc21b UTSW 2 66,057,134 (GRCm39) missense probably benign 0.00
R7125:Ttc21b UTSW 2 66,066,670 (GRCm39) missense probably benign 0.00
R7265:Ttc21b UTSW 2 66,040,517 (GRCm39) missense possibly damaging 0.89
R7283:Ttc21b UTSW 2 66,039,062 (GRCm39) missense probably damaging 0.96
R7560:Ttc21b UTSW 2 66,047,548 (GRCm39) missense possibly damaging 0.69
R7561:Ttc21b UTSW 2 66,047,548 (GRCm39) missense possibly damaging 0.69
R7816:Ttc21b UTSW 2 66,077,705 (GRCm39) missense possibly damaging 0.82
R8172:Ttc21b UTSW 2 66,082,500 (GRCm39) missense probably benign 0.01
R8179:Ttc21b UTSW 2 66,031,824 (GRCm39) missense probably benign
R9047:Ttc21b UTSW 2 66,031,596 (GRCm39) missense
R9282:Ttc21b UTSW 2 66,056,349 (GRCm39) missense possibly damaging 0.65
R9336:Ttc21b UTSW 2 66,057,287 (GRCm39) missense probably benign
R9464:Ttc21b UTSW 2 66,053,866 (GRCm39) missense probably damaging 1.00
X0013:Ttc21b UTSW 2 66,056,294 (GRCm39) nonsense probably null
Predicted Primers PCR Primer
(F):5'- ACAACTTATTAGGGTTGCTTGTAGG -3'
(R):5'- TGTGTTTAGTCCTGGCTACATAC -3'

Sequencing Primer
(F):5'- ATTAGGGTTGCTTGTAGGTTCATG -3'
(R):5'- GTCCTGGCTACATACGATTATAAAC -3'
Posted On 2018-11-28