Incidental Mutation 'R4671:Ttc21b'
ID 348404
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4671 (G1)
Quality Score 225
Status Not validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 66057257 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Serine to Proline at position 572 (S572P)
Ref Sequence ENSEMBL: ENSMUSP00000131758 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000102718] [ENSMUST00000125446]
AlphaFold Q0HA38
Predicted Effect possibly damaging
Transcript: ENSMUST00000102718
AA Change: S572P

PolyPhen 2 Score 0.507 (Sensitivity: 0.88; Specificity: 0.90)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: S572P

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: S572P

PolyPhen 2 Score 0.656 (Sensitivity: 0.87; Specificity: 0.91)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: S572P

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: 99.2%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.4%
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: 68 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abcc2 T C 19: 43,789,157 (GRCm39) S271P probably benign Het
Acod1 T G 14: 103,284,508 (GRCm39) M2R probably benign Het
Adamts20 T C 15: 94,301,206 (GRCm39) E106G possibly damaging Het
Adgra3 G A 5: 50,136,710 (GRCm39) T661M probably damaging Het
Akap13 T A 7: 75,229,312 (GRCm39) C161* probably null Het
Akr1c12 A C 13: 4,323,816 (GRCm39) S162A possibly damaging Het
Anks1 C A 17: 28,270,552 (GRCm39) H805N probably benign Het
Arhgap22 T C 14: 33,084,500 (GRCm39) C260R probably damaging Het
Banf1 T C 19: 5,415,872 (GRCm39) R33G probably benign Het
Bcas1 T C 2: 170,226,245 (GRCm39) K310R probably damaging Het
Cacna1c G T 6: 118,629,019 (GRCm39) H1240N probably damaging Het
Cartpt C T 13: 100,036,588 (GRCm39) probably null Het
Ccdc127 T A 13: 74,505,164 (GRCm39) Y237* probably null Het
Ccnb1ip1 A T 14: 51,029,734 (GRCm39) Y109* probably null Het
Cenpj A T 14: 56,790,840 (GRCm39) V403E possibly damaging Het
Cps1 A G 1: 67,235,719 (GRCm39) Y951C probably damaging Het
Dcakd T C 11: 102,890,634 (GRCm39) E51G possibly damaging Het
Dennd4a A T 9: 64,801,689 (GRCm39) N944I probably benign Het
Dus3l C T 17: 57,075,566 (GRCm39) R430C probably benign Het
Dync2h1 A G 9: 7,169,640 (GRCm39) L279P possibly damaging Het
Dzip3 G A 16: 48,799,953 (GRCm39) Q112* probably null Het
Eif1ad T A 19: 5,418,219 (GRCm39) M1K probably null Het
Fabp3 C T 4: 130,206,180 (GRCm39) T57I probably benign Het
Fancg T C 4: 43,005,272 (GRCm39) E366G probably benign Het
Gin1 C T 1: 97,712,565 (GRCm39) P154S probably damaging Het
Gm11938 A T 11: 99,493,832 (GRCm39) C88S possibly damaging Het
Gpr183 T C 14: 122,192,149 (GRCm39) D124G probably damaging Het
Gucy2g T A 19: 55,226,500 (GRCm39) I139F probably damaging Het
Iqub A T 6: 24,479,183 (GRCm39) M453K probably benign Het
Jcad A G 18: 4,674,175 (GRCm39) T646A probably benign Het
Kif23 A T 9: 61,852,641 (GRCm39) D24E probably benign Het
Kmt2c T C 5: 25,571,175 (GRCm39) N845S probably damaging Het
Lhx5 G A 5: 120,578,032 (GRCm39) S284N probably benign Het
Lipf T G 19: 33,954,076 (GRCm39) V389G possibly damaging Het
Lrrc7 C T 3: 157,908,132 (GRCm39) probably null Het
Magi1 A G 6: 93,657,768 (GRCm39) probably null Het
Mast2 A G 4: 116,165,847 (GRCm39) S1287P probably damaging Het
Mepce C T 5: 137,784,905 (GRCm39) probably benign Het
Mkrn1 A G 6: 39,382,691 (GRCm39) V173A probably damaging Het
Myo1c C T 11: 75,560,856 (GRCm39) R770* probably null Het
Naip6 A G 13: 100,431,239 (GRCm39) probably null Het
Nsmce3 A T 7: 64,522,530 (GRCm39) L46Q probably benign Het
Or1n2 G A 2: 36,797,405 (GRCm39) C149Y probably benign Het
Or2j6 T G 7: 139,980,218 (GRCm39) Y247S probably damaging Het
Or4k44 A T 2: 111,368,280 (GRCm39) M118K probably damaging Het
Or51e2 A G 7: 102,391,808 (GRCm39) V134A probably damaging Het
Or56a3b T C 7: 104,771,513 (GRCm39) L283P probably damaging Het
Parp14 A G 16: 35,678,691 (GRCm39) F426L probably benign Het
Pcf11 A T 7: 92,306,737 (GRCm39) S1144T possibly damaging Het
Prpf3 T A 3: 95,758,976 (GRCm39) T59S possibly damaging Het
Ptgir A G 7: 16,640,794 (GRCm39) M29V possibly damaging Het
Ptk7 A G 17: 46,885,392 (GRCm39) V678A probably benign Het
Rb1 A G 14: 73,511,116 (GRCm39) L331S probably damaging Het
Relch A G 1: 105,646,584 (GRCm39) I637V probably benign Het
Sell A G 1: 163,893,042 (GRCm39) Y86C probably damaging Het
Serpina1e G A 12: 103,914,341 (GRCm39) R328W probably damaging Het
Sertad3 T G 7: 27,176,091 (GRCm39) L175R possibly damaging Het
Stard9 G T 2: 120,529,121 (GRCm39) G1793W probably damaging Het
Stra6 T C 9: 58,056,517 (GRCm39) I383T probably benign Het
Tcf7l1 A G 6: 72,626,161 (GRCm39) L154P probably damaging Het
Tent5c C A 3: 100,380,515 (GRCm39) L80F probably benign Het
Tonsl A T 15: 76,507,610 (GRCm39) D55E probably benign Het
Ttc7 T A 17: 87,654,048 (GRCm39) L575Q probably damaging Het
Ubl4b C T 3: 107,462,194 (GRCm39) S22N probably damaging Het
Ubr4 T C 4: 139,163,502 (GRCm39) V2634A possibly damaging Het
Zbed6 A G 1: 133,584,778 (GRCm39) V853A probably benign Het
Zfp46 A C 4: 136,017,484 (GRCm39) D106A probably damaging Het
Zfp951 A C 5: 104,962,567 (GRCm39) I333S 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
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'- GGGAATTAGTACAAACGCACAC -3'
(R):5'- GAAACATGCTTTGAGGATACGC -3'

Sequencing Primer
(F):5'- ACGCTCCAGTCTGAGTTAAC -3'
(R):5'- GCTTTGAGGATACGCTCACAAATG -3'
Posted On 2015-10-08