Incidental Mutation 'R0621:Ttc21b'
ID 58653
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 038810-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R0621 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to T at 66056355 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Arginine to Glutamine at position 677 (R677Q)
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: R677Q

PolyPhen 2 Score 0.070 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: R677Q

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: R677Q

PolyPhen 2 Score 0.070 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: R677Q

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: ENSMUST00000169968
Coding Region Coverage
  • 1x: 99.4%
  • 3x: 99.0%
  • 10x: 97.8%
  • 20x: 96.0%
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: 53 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abr T C 11: 76,399,898 (GRCm39) D33G probably damaging Het
Adgre1 T A 17: 57,748,359 (GRCm39) S520T probably damaging Het
Afg2a C T 3: 37,486,178 (GRCm39) T300I probably benign Het
Ankrd40 A G 11: 94,230,433 (GRCm39) probably null Het
Aph1b A T 9: 66,686,616 (GRCm39) I177K possibly damaging Het
Armc3 A T 2: 19,300,204 (GRCm39) N579I probably damaging Het
Atxn7l1 T C 12: 33,376,099 (GRCm39) V131A probably benign Het
C130073F10Rik A G 4: 101,747,992 (GRCm39) Y61H probably damaging Het
C1s2 A T 6: 124,608,071 (GRCm39) L214Q probably damaging Het
Caprin2 A T 6: 148,760,176 (GRCm39) S425T possibly damaging Het
Cdc42ep4 G A 11: 113,619,522 (GRCm39) R290C probably damaging Het
Cenpf T C 1: 189,404,825 (GRCm39) T352A probably benign Het
Col6a4 A T 9: 105,943,990 (GRCm39) F1161L probably damaging Het
Dctn2 T C 10: 127,113,809 (GRCm39) probably null Het
Ddx24 T C 12: 103,391,817 (GRCm39) probably benign Het
Dsg1c C A 18: 20,412,752 (GRCm39) A591D possibly damaging Het
Efnb3 T C 11: 69,446,798 (GRCm39) D304G probably damaging Het
Erbb3 T C 10: 128,422,094 (GRCm39) Y50C probably benign Het
Eya3 T G 4: 132,422,113 (GRCm39) D275E probably benign Het
Fam81a G T 9: 70,000,929 (GRCm39) Q272K probably benign Het
Foxf1 T C 8: 121,811,919 (GRCm39) V261A probably damaging Het
Gm9637 G A 14: 19,402,011 (GRCm38) noncoding transcript Het
Gnb4 C T 3: 32,645,356 (GRCm39) V112I probably benign Het
Gtf2h2 A T 13: 100,625,433 (GRCm39) L61Q probably damaging Het
Hey2 T A 10: 30,710,382 (GRCm39) I124F probably benign Het
Hoxb3 A T 11: 96,236,789 (GRCm39) Y289F probably damaging Het
Kctd3 C T 1: 188,713,538 (GRCm39) R399Q probably damaging Het
Kif26b C G 1: 178,743,218 (GRCm39) P1105A probably benign Het
Klhl30 C T 1: 91,285,585 (GRCm39) T369M probably damaging Het
Lipo2 C T 19: 33,708,339 (GRCm39) G225D probably damaging Het
Macf1 T C 4: 123,274,327 (GRCm39) K6350E probably damaging Het
Myh13 A C 11: 67,232,058 (GRCm39) N446T probably damaging Het
Nos1ap T C 1: 170,146,150 (GRCm39) D468G probably damaging Het
Or10j2 C T 1: 173,098,242 (GRCm39) P167S possibly damaging Het
Or11h7 G A 14: 50,891,419 (GRCm39) G242R possibly damaging Het
Or4a77 C A 2: 89,487,459 (GRCm39) E109* probably null Het
Pde3a T C 6: 141,195,725 (GRCm39) L137P probably damaging Het
Ppm1f G A 16: 16,733,172 (GRCm39) R233Q probably benign Het
Rtf2 C A 2: 172,308,216 (GRCm39) A205E possibly damaging Het
Sh2d5 T C 4: 137,985,629 (GRCm39) F359S probably benign Het
Siglec1 G A 2: 130,916,188 (GRCm39) T1254M probably benign Het
Slc39a11 G A 11: 113,354,905 (GRCm39) P108L probably benign Het
Slc6a5 G A 7: 49,567,113 (GRCm39) probably null Het
Snph C T 2: 151,435,642 (GRCm39) V360M probably damaging Het
Snx29 A G 16: 11,223,651 (GRCm39) probably null Het
Sos1 A G 17: 80,759,408 (GRCm39) probably null Het
St8sia6 T A 2: 13,662,093 (GRCm39) N246I probably damaging Het
Thy1 T A 9: 43,958,030 (GRCm39) F53I probably damaging Het
Tle3 T A 9: 61,317,387 (GRCm39) Y421* probably null Het
Vmn2r107 A T 17: 20,595,252 (GRCm39) I602F probably benign Het
Wdr17 C A 8: 55,096,226 (GRCm39) G1016C probably benign Het
Wdr62 T C 7: 29,953,486 (GRCm39) E182G possibly damaging Het
Zfp597 A G 16: 3,684,228 (GRCm39) I176T 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
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
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'- TAAACCCCTTGACGAGAGTGGTCC -3'
(R):5'- TTTCGCGTTACAGCATGAGGCAG -3'

Sequencing Primer
(F):5'- AGGAAGATGACCATTTCCAGAC -3'
(R):5'- CAGCAAAGGTTTTACAGGATGCC -3'
Posted On 2013-07-11