Incidental Mutation 'R8172:Ttc21b'
ID 634175
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 067598-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R8172 (G1)
Quality Score 225.009
Status Validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to A at 66082500 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Tyrosine to Phenylalanine at position 33 (Y33F)
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: Y33F

PolyPhen 2 Score 0.006 (Sensitivity: 0.97; Specificity: 0.75)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: Y33F

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: Y33F

PolyPhen 2 Score 0.006 (Sensitivity: 0.97; Specificity: 0.75)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: Y33F

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: 99.9%
  • 10x: 99.3%
  • 20x: 97.6%
Validation Efficiency 100% (53/53)
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: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adcy5 T A 16: 34,977,427 (GRCm39) L320Q probably damaging Het
Adgre4 A T 17: 56,104,769 (GRCm39) L278F probably benign Het
Agfg2 C A 5: 137,665,431 (GRCm39) R108L probably damaging Het
Arap2 A T 5: 62,779,324 (GRCm39) probably null Het
Ascl2 G T 7: 142,522,336 (GRCm39) N37K possibly damaging Het
Baiap3 C A 17: 25,463,096 (GRCm39) D1043Y probably damaging Het
Cby2 T A 14: 75,829,241 (GRCm39) probably null Het
Ccdc18 T C 5: 108,311,640 (GRCm39) probably null Het
Cemip T A 7: 83,646,433 (GRCm39) D205V probably damaging Het
Cenpn G A 8: 117,658,333 (GRCm39) G93D probably benign Het
Clpsl2 T A 17: 28,768,556 (GRCm39) S23R possibly damaging Het
Cnot3 T A 7: 3,661,724 (GRCm39) I672N possibly damaging Het
Crygs A G 16: 22,625,292 (GRCm39) Y50H probably damaging Het
Cyp4x1 T C 4: 114,968,874 (GRCm39) T403A possibly damaging Het
Dnajc28 G A 16: 91,413,795 (GRCm39) R150* probably null Het
Fam184b C T 5: 45,741,709 (GRCm39) G174D possibly damaging Het
Fat2 T A 11: 55,178,638 (GRCm39) D1474V probably damaging Het
Flg2 T A 3: 93,108,468 (GRCm39) D165E possibly damaging Het
Fpr-rs7 A T 17: 20,334,443 (GRCm39) F16I probably benign Het
Gpr176 G A 2: 118,114,615 (GRCm39) T65I probably damaging Het
H2-Q10 C T 17: 35,781,996 (GRCm39) T206I probably null Het
Hadha C G 5: 30,350,285 (GRCm39) A88P probably damaging Het
Hlcs A T 16: 94,068,485 (GRCm39) L245Q probably damaging Het
Hnrnph1 T C 11: 50,270,732 (GRCm39) V113A probably damaging Het
Hsd3b7 G A 7: 127,401,546 (GRCm39) V224M probably damaging Het
Igha T C 12: 113,223,592 (GRCm39) D88G Het
Iqca1l T C 5: 24,748,608 (GRCm39) M803V probably benign Het
Kdm7a T C 6: 39,125,965 (GRCm39) K610R probably benign Het
Krt87 C T 15: 101,383,284 (GRCm39) C474Y probably benign Het
Lrrc74a T A 12: 86,788,530 (GRCm39) L170H probably damaging Het
Lyg2 T C 1: 37,946,748 (GRCm39) T178A probably benign Het
Map2k2 T A 10: 80,959,442 (GRCm39) probably null Het
Mast4 C T 13: 103,089,633 (GRCm39) probably null Het
Mtmr14 T A 6: 113,216,529 (GRCm39) D8E probably benign Het
Neu2 C T 1: 87,524,633 (GRCm39) P206L probably damaging Het
Oga C T 19: 45,765,339 (GRCm39) R156H probably damaging Het
Or10al6 A G 17: 38,083,326 (GRCm39) T261A probably benign Het
Or4c105 A T 2: 88,647,986 (GRCm39) Q157L probably damaging Het
Poc1b C A 10: 98,980,338 (GRCm39) probably null Het
Proser1 T A 3: 53,386,272 (GRCm39) V718E possibly damaging Het
Ptgr2 T A 12: 84,360,783 (GRCm39) L351Q possibly damaging Het
Ptprf A G 4: 118,068,275 (GRCm39) Y1754H probably benign Het
Scgb2b3 T C 7: 31,058,476 (GRCm39) K109R possibly damaging Het
Scn2a A T 2: 65,520,672 (GRCm39) H556L probably benign Het
Scn7a A T 2: 66,506,191 (GRCm39) M1566K possibly damaging Het
Slco5a1 A T 1: 13,060,490 (GRCm39) L77* probably null Het
Stk31 T C 6: 49,394,261 (GRCm39) F208L possibly damaging Het
Tbcd C T 11: 121,384,711 (GRCm39) T315M probably benign Het
Tbx4 A G 11: 85,801,933 (GRCm39) I189V probably benign Het
Tia1 T A 6: 86,404,682 (GRCm39) Y306N probably benign Het
Usp47 T A 7: 111,687,133 (GRCm39) L677* probably null 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
R6959:Ttc21b UTSW 2 66,061,656 (GRCm39) missense probably benign 0.05
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
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'- ATGGCCTCAAACTCCCGAAG -3'
(R):5'- TGATTTGTCAGTAATTCCTTGGCC -3'

Sequencing Primer
(F):5'- CAGAGACTATGGAAGACATCG -3'
(R):5'- ACTATTGAGTGTCCATTGTTAATGGC -3'
Posted On 2020-07-13