Incidental Mutation 'R4561:Ttc21b'
ID 343078
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 041786-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4561 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 66016562 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Tyrosine to Cysteine at position 1269 (Y1269C)
Ref Sequence ENSEMBL: ENSMUSP00000099779 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000102718] [ENSMUST00000125446]
AlphaFold Q0HA38
Predicted Effect probably damaging
Transcript: ENSMUST00000102718
AA Change: Y1269C

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: Y1269C

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
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848

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: ENSMUST00000128859
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 95.1%
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 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: 46 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Ank3 T C 10: 69,837,848 (GRCm39) S1601P probably damaging Het
Arnt A G 3: 95,359,924 (GRCm39) N56D probably damaging Het
Atad5 A G 11: 79,986,715 (GRCm39) T601A probably benign Het
Calr4 A G 4: 109,103,379 (GRCm39) N163S probably damaging Het
Cenpc1 C A 5: 86,195,491 (GRCm39) A93S probably damaging Het
Cep135 C T 5: 76,786,040 (GRCm39) H1048Y possibly damaging Het
Ctnna2 A G 6: 77,613,696 (GRCm39) probably null Het
Ddx60 T C 8: 62,395,495 (GRCm39) L144P probably damaging Het
Dera A T 6: 137,757,736 (GRCm39) T96S possibly damaging Het
Dock9 T A 14: 121,796,419 (GRCm39) M1853L probably benign Het
Erbb4 G A 1: 68,383,080 (GRCm39) R306* probably null Het
Glyat G T 19: 12,628,644 (GRCm39) L146F possibly damaging Het
Grk4 C A 5: 34,852,157 (GRCm39) Q134K probably benign Het
Hkdc1 T C 10: 62,245,618 (GRCm39) Q181R probably benign Het
Huwe1 A T X: 150,646,955 (GRCm39) I682F probably damaging Het
Ipo4 C T 14: 55,867,546 (GRCm39) probably benign Het
Ivl CCTGCTGCTGCT CCTGCTGCTGCTGCT 3: 92,479,262 (GRCm39) probably benign Het
Kcnd2 A G 6: 21,216,395 (GRCm39) Q33R probably benign Het
Kdm7a C T 6: 39,129,757 (GRCm39) R473Q probably damaging Het
Klhl30 A T 1: 91,288,753 (GRCm39) H504L probably damaging Het
Map4 A G 9: 109,881,439 (GRCm39) Y101C possibly damaging Het
Mfn2 C A 4: 147,961,492 (GRCm39) R707L probably damaging Het
Mslnl G A 17: 25,961,908 (GRCm39) V128M probably damaging Het
Myof T C 19: 37,911,438 (GRCm39) N1511D probably benign Het
Neb A T 2: 52,176,167 (GRCm39) Y1431N probably damaging Het
Nlrc5 A G 8: 95,203,774 (GRCm39) T625A probably damaging Het
Or5g27 G T 2: 85,409,964 (GRCm39) C127F probably damaging Het
Pax2 A G 19: 44,824,402 (GRCm39) Y374C unknown Het
Pde8a T A 7: 80,958,568 (GRCm39) Y315* probably null Het
Pkhd1 A T 1: 20,604,943 (GRCm39) L1124Q possibly damaging Het
Ppp1r3a A G 6: 14,754,681 (GRCm39) F189L probably damaging Het
Prex2 G A 1: 11,254,769 (GRCm39) probably null Het
Robo4 CGG CG 9: 37,322,786 (GRCm39) probably null Het
Slc22a22 T A 15: 57,126,781 (GRCm39) Q77L probably damaging Het
Slc24a2 A T 4: 87,145,634 (GRCm39) V140D probably damaging Het
Slc35g2 C A 9: 100,435,287 (GRCm39) R128L probably damaging Het
Slco1b2 A G 6: 141,616,893 (GRCm39) T409A probably benign Het
Spag7 T C 11: 70,555,816 (GRCm39) I80M probably damaging Het
Srgap3 A G 6: 112,758,015 (GRCm39) M164T probably damaging Het
Sspo A T 6: 48,452,468 (GRCm39) probably null Het
Tcte2 T C 17: 13,942,864 (GRCm39) probably benign Het
Tmem117 A T 15: 94,992,677 (GRCm39) M446L probably benign Het
Tmtc4 T C 14: 123,200,710 (GRCm39) T194A probably benign Het
Zfp236 A T 18: 82,638,531 (GRCm39) I1363N probably damaging Het
Zfp760 T A 17: 21,942,648 (GRCm39) S608T probably benign Het
Zfp947 G T 17: 22,365,124 (GRCm39) Y183* 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
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
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'- TTCAGTGACATTTGAGAGTAGAAGG -3'
(R):5'- CCACTTGTCTGCTGATGGAG -3'

Sequencing Primer
(F):5'- GTAGAAGGAAATTGTGCATTGCTAC -3'
(R):5'- CTGAAGAAGCCACACTCGGG -3'
Posted On 2015-09-24