Incidental Mutation 'R7265:Ttc21b'
ID 564844
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 045355-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R7265 (G1)
Quality Score 158.009
Status Not validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 66040517 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Glutamic Acid to Glycine at position 858 (E858G)
Ref Sequence ENSEMBL: ENSMUSP00000099779 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000102718] [ENSMUST00000125446]
AlphaFold Q0HA38
Predicted Effect possibly damaging
Transcript: ENSMUST00000102718
AA Change: E858G

PolyPhen 2 Score 0.889 (Sensitivity: 0.82; Specificity: 0.94)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: E858G

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 possibly damaging
Transcript: ENSMUST00000125446
AA Change: E858G

PolyPhen 2 Score 0.889 (Sensitivity: 0.82; Specificity: 0.94)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: E858G

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: 100.0%
  • 10x: 99.7%
  • 20x: 99.1%
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: 67 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Asb3 A G 11: 30,948,495 (GRCm39) E57G probably benign Het
B3glct A G 5: 149,632,785 (GRCm39) D45G probably benign Het
BC034090 C A 1: 155,101,073 (GRCm39) C397F probably damaging Het
Bicd1 A G 6: 149,415,374 (GRCm39) K696E probably damaging Het
Btnl4 C T 17: 34,694,868 (GRCm39) C15Y probably benign Het
Cabin1 T C 10: 75,557,257 (GRCm39) N300S Het
Chia1 T A 3: 106,036,239 (GRCm39) L273Q probably damaging Het
Coq2 A G 5: 100,808,136 (GRCm39) S222P possibly damaging Het
Dgkb T C 12: 38,234,931 (GRCm39) V432A possibly damaging Het
Dpp3 A G 19: 4,973,797 (GRCm39) F92S probably damaging Het
Elapor2 T C 5: 9,496,975 (GRCm39) V813A possibly damaging Het
Emcn T C 3: 137,122,839 (GRCm39) S183P probably damaging Het
Emcn T A 3: 137,124,837 (GRCm39) W217R probably damaging Het
Enpp2 A C 15: 54,773,429 (GRCm39) probably null Het
Epb41 T C 4: 131,695,145 (GRCm39) E14G unknown Het
Fhip1b G T 7: 105,033,432 (GRCm39) R609S probably benign Het
Grk4 A G 5: 34,873,608 (GRCm39) R225G probably damaging Het
Insl6 A T 19: 29,298,945 (GRCm39) W156R possibly damaging Het
Ints3 A T 3: 90,311,290 (GRCm39) probably null Het
Jarid2 G A 13: 45,055,748 (GRCm39) G318D probably benign Het
Kif16b A T 2: 142,556,650 (GRCm39) L596H probably damaging Het
Lctl T A 9: 64,034,203 (GRCm39) Y281N probably damaging Het
Letm1 A T 5: 33,935,992 (GRCm39) C34S possibly damaging Het
Lrrc32 T C 7: 98,148,644 (GRCm39) S475P probably damaging Het
Lrrc37a T A 11: 103,389,767 (GRCm39) D1886V probably benign Het
Macf1 A T 4: 123,301,670 (GRCm39) I944K probably benign Het
Mark4 T C 7: 19,185,650 (GRCm39) D28G probably benign Het
Mecom C A 3: 30,034,282 (GRCm39) A465S possibly damaging Het
Muc16 A G 9: 18,567,768 (GRCm39) S1584P unknown Het
Mycbp2 A G 14: 103,434,679 (GRCm39) probably null Het
Myo18b G A 5: 112,959,938 (GRCm39) R1372W probably damaging Het
Myo1c T C 11: 75,560,616 (GRCm39) I706T possibly damaging Het
Myo1g T C 11: 6,460,933 (GRCm39) T704A possibly damaging Het
Nwd1 A G 8: 73,419,556 (GRCm39) K914E probably benign Het
Or5ac20 T A 16: 59,104,287 (GRCm39) D191V probably damaging Het
Or8b101 A T 9: 38,020,227 (GRCm39) I77L possibly damaging Het
Or8k23 C T 2: 86,186,088 (GRCm39) V213I probably benign Het
Otub2 C T 12: 103,366,480 (GRCm39) S99L probably damaging Het
Pak5 G A 2: 135,943,105 (GRCm39) S345L probably benign Het
Pcdhb20 A T 18: 37,638,616 (GRCm39) I381F possibly damaging Het
Pcdhga7 A G 18: 37,849,969 (GRCm39) T659A probably damaging Het
Phf8-ps G A 17: 33,285,971 (GRCm39) T277I probably damaging Het
Pik3c2a T A 7: 115,987,321 (GRCm39) K533N probably damaging Het
Pkd1l1 T A 11: 8,879,402 (GRCm39) Q933L Het
Ppp4r3a A T 12: 101,019,770 (GRCm39) M395K possibly damaging Het
Pramel11 C A 4: 143,621,991 (GRCm39) V455L probably benign Het
Ptpn20 A G 14: 33,336,481 (GRCm39) T107A probably benign Het
Scaf8 T A 17: 3,227,900 (GRCm39) D376E unknown Het
Scn11a C A 9: 119,644,331 (GRCm39) C143F probably damaging Het
Sctr G A 1: 119,949,955 (GRCm39) R48Q probably benign Het
Sec13 A T 6: 113,712,097 (GRCm39) Y79* probably null Het
Sez6 T A 11: 77,853,691 (GRCm39) I287N probably damaging Het
Slc52a3 T A 2: 151,846,336 (GRCm39) I99K possibly damaging Het
Slco4c1 T G 1: 96,799,518 (GRCm39) H106P probably damaging Het
Tada2b A G 5: 36,633,952 (GRCm39) Y209H probably damaging Het
Tas1r2 T A 4: 139,396,963 (GRCm39) D796E probably benign Het
Tdrd12 A T 7: 35,187,147 (GRCm39) M581K Het
Thnsl1 A G 2: 21,217,269 (GRCm39) E341G probably damaging Het
Tlk2 C T 11: 105,075,070 (GRCm39) R11* probably null Het
Tmco6 T C 18: 36,872,396 (GRCm39) probably null Het
Trmt44 A T 5: 35,721,647 (GRCm39) H505Q probably benign Het
Trpc1 T C 9: 95,590,328 (GRCm39) M710V probably benign Het
Twsg1 C T 17: 66,236,782 (GRCm39) D83N possibly damaging Het
Umod G T 7: 119,065,296 (GRCm39) Q578K probably benign Het
Vmn2r6 T C 3: 64,464,195 (GRCm39) N213S probably benign Het
Vmn2r88 G A 14: 51,655,776 (GRCm39) V662I Het
Zfp414 C A 17: 33,850,253 (GRCm39) D217E probably benign 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
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'- CACAATGAACCAGGGCTTCTC -3'
(R):5'- TATTTGCAAGTAGCTGCTTGTC -3'

Sequencing Primer
(F):5'- GAACCAGGGCTTCTCTATAAAATG -3'
(R):5'- GGATTAGTTTGCTCTATCACAGACC -3'
Posted On 2019-06-26