Incidental Mutation 'R6210:Ttc21b'
ID 503382
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 044344-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R6210 (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 66066698 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Serine to Arginine at position 318 (S318R)
Ref Sequence ENSEMBL: ENSMUSP00000131758 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000102718] [ENSMUST00000125446]
AlphaFold Q0HA38
Predicted Effect probably benign
Transcript: ENSMUST00000102718
AA Change: S318R

PolyPhen 2 Score 0.002 (Sensitivity: 0.99; Specificity: 0.30)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: S318R

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: S318R

PolyPhen 2 Score 0.005 (Sensitivity: 0.97; Specificity: 0.74)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: S318R

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
Predicted Effect noncoding transcript
Transcript: ENSMUST00000131503
Predicted Effect noncoding transcript
Transcript: ENSMUST00000169968
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.5%
  • 20x: 98.4%
Validation Efficiency 95% (52/55)
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: 52 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abhd3 T A 18: 10,706,032 (GRCm39) I94F probably damaging Het
Bbox1 A T 2: 110,100,422 (GRCm39) D258E probably benign Het
Catsperb A G 12: 101,378,827 (GRCm39) probably null Het
Ccdc127 T C 13: 74,505,040 (GRCm39) V196A probably benign Het
Cd101 A T 3: 100,925,959 (GRCm39) D253E probably damaging Het
Ceacam15 T C 7: 16,407,214 (GRCm39) Y101C probably damaging Het
Cep135 C T 5: 76,772,570 (GRCm39) L652F probably benign Het
Col5a1 G T 2: 27,922,633 (GRCm39) V234L probably benign Het
Cxcr6 T C 9: 123,639,073 (GRCm39) S25P possibly damaging Het
Dctn4 C T 18: 60,679,865 (GRCm39) Q258* probably null Het
Fmnl2 A T 2: 53,020,457 (GRCm39) N1067I possibly damaging Het
Frrs1 A T 3: 116,672,080 (GRCm39) K59N probably benign Het
Gpr157 T C 4: 150,186,055 (GRCm39) Y206H probably damaging Het
Hephl1 A G 9: 15,001,860 (GRCm39) Y161H possibly damaging Het
Hinfp C T 9: 44,210,169 (GRCm39) probably null Het
Igf2r A T 17: 12,933,838 (GRCm39) N805K probably damaging Het
Ilrun A T 17: 27,986,960 (GRCm39) D255E probably benign Het
Itga3 T C 11: 94,959,717 (GRCm39) probably benign Het
Itga6 A G 2: 71,664,351 (GRCm39) probably null Het
Kcnip1 G A 11: 33,595,600 (GRCm39) T30I possibly damaging Het
Lig4 T C 8: 10,021,585 (GRCm39) T732A probably benign Het
Lmod3 T A 6: 97,224,262 (GRCm39) T520S probably damaging Het
Megf8 G A 7: 25,043,145 (GRCm39) V1356I possibly damaging Het
Mical3 C T 6: 121,017,478 (GRCm39) probably null Het
Msi1 T C 5: 115,573,535 (GRCm39) I8T probably damaging Het
Mug4-ps A T 6: 121,927,276 (GRCm39) noncoding transcript Het
Myo1f T A 17: 33,820,044 (GRCm39) I783N probably damaging Het
Nr6a1 A C 2: 38,619,509 (GRCm39) I462S probably damaging Het
Or2t48 C T 11: 58,420,090 (GRCm39) A241T probably damaging Het
Or8k23 A G 2: 86,186,702 (GRCm39) V8A probably benign Het
Pah C A 10: 87,419,423 (GRCm39) Q449K probably benign Het
Pced1a A G 2: 130,263,839 (GRCm39) V271A probably damaging Het
Pdzrn4 A T 15: 92,655,562 (GRCm39) E485V probably damaging Het
Psg21 A G 7: 18,386,270 (GRCm39) Y239H probably damaging Het
Ptprt T C 2: 162,109,949 (GRCm39) Y180C probably damaging Het
Raet1d T A 10: 22,246,849 (GRCm39) I59N probably damaging Het
Rfx1 T C 8: 84,819,647 (GRCm39) L653P probably damaging Het
Rnase2a A G 14: 51,493,131 (GRCm39) V78A possibly damaging Het
Rsf1 ATGGCG ATGGCGACGGTGGCG 7: 97,229,111 (GRCm39) probably benign Homo
Serbp1 T C 6: 67,249,851 (GRCm39) probably benign Het
Tlr1 A T 5: 65,082,629 (GRCm39) H649Q probably damaging Het
Tns2 C T 15: 102,017,369 (GRCm39) R281C probably damaging Het
Trpc6 T A 9: 8,656,731 (GRCm39) D719E probably benign Het
Ttn G A 2: 76,579,673 (GRCm39) T23740M probably damaging Het
Uhmk1 T C 1: 170,039,806 (GRCm39) Q187R probably damaging Het
Ung C T 5: 114,269,438 (GRCm39) A50V probably benign Het
Upk3bl C T 5: 136,088,674 (GRCm39) Q103* probably null Het
Usp17le C A 7: 104,418,350 (GRCm39) C264F probably damaging Het
Vmn2r105 T A 17: 20,448,758 (GRCm39) N140Y probably damaging Het
Vmn2r84 C T 10: 130,222,114 (GRCm39) C702Y probably damaging Het
Zfp709 TCGACG TCG 8: 72,644,552 (GRCm39) probably benign Het
Zfp748 G A 13: 67,688,923 (GRCm39) P779L possibly 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
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
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'- CATTCTCTGCTTGAGTGGGC -3'
(R):5'- CCAGATGATAGAATGAATGCCTTTCC -3'

Sequencing Primer
(F):5'- GCTTGAGTGGGCAGATGC -3'
(R):5'- AGAATGAATGCCTTTCCTTCTTAAG -3'
Posted On 2018-02-27