Incidental Mutation 'R2120:Ttc21b'
ID 231347
Institutional Source Beutler Lab
Gene Symbol Ttc21b
Ensembl Gene ENSMUSG00000034848
Gene Name tetratricopeptide repeat domain 21B
Synonyms Thm1, line 158, aln, 2410066K11Rik
MMRRC Submission 040124-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R2120 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 66014671-66086961 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to T at 66057098 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Isoleucine at position 625 (V625I)
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: V625I

PolyPhen 2 Score 0.117 (Sensitivity: 0.93; Specificity: 0.86)
SMART Domains Protein: ENSMUSP00000099779
Gene: ENSMUSG00000034848
AA Change: V625I

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: V625I

PolyPhen 2 Score 0.117 (Sensitivity: 0.93; Specificity: 0.86)
SMART Domains Protein: ENSMUSP00000131758
Gene: ENSMUSG00000034848
AA Change: V625I

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
Meta Mutation Damage Score 0.0886 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.5%
  • 20x: 95.9%
Validation Efficiency 100% (86/86)
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: 84 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca13 T C 11: 9,259,013 (GRCm39) probably benign Het
Abcg5 T A 17: 84,978,575 (GRCm39) E294D probably benign Het
Actrt2 C T 4: 154,751,551 (GRCm39) R195Q probably benign Het
Adamts12 C T 15: 11,310,665 (GRCm39) T974I probably damaging Het
Ankrd65 A G 4: 155,876,530 (GRCm39) T239A probably benign Het
Ano7 G T 1: 93,329,855 (GRCm39) probably benign Het
Apc A T 18: 34,409,654 (GRCm39) E198V probably damaging Het
Arhgef10 A G 8: 14,984,820 (GRCm39) D200G probably damaging Het
Atp9a A T 2: 168,495,457 (GRCm39) V583E probably damaging Het
Bicral C T 17: 47,135,741 (GRCm39) A490T probably benign Het
C1rl C T 6: 124,485,672 (GRCm39) P348S probably damaging Het
Cog1 T C 11: 113,540,424 (GRCm39) L13P probably damaging Het
Cx3cr1 T A 9: 119,880,749 (GRCm39) T218S probably damaging Het
Cyp2a12 A G 7: 26,736,071 (GRCm39) *493W probably null Het
Dmd G C X: 83,356,089 (GRCm39) A2257P probably benign Het
E2f4 A G 8: 106,026,973 (GRCm39) Y179C probably damaging Het
Ecel1 A G 1: 87,075,997 (GRCm39) S727P probably damaging Het
Endod1 T C 9: 14,268,949 (GRCm39) N179D probably benign Het
Epc2 C T 2: 49,437,621 (GRCm39) probably benign Het
Ets2 G T 16: 95,519,977 (GRCm39) R401L probably benign Het
Fgd4 C T 16: 16,243,692 (GRCm39) C614Y probably benign Het
Fgf18 A C 11: 33,068,003 (GRCm39) F129C probably damaging Het
Frem3 A T 8: 81,342,086 (GRCm39) T1460S probably benign Het
H2-M1 T G 17: 36,980,929 (GRCm39) T336P possibly damaging Het
Ikbkb T C 8: 23,157,233 (GRCm39) probably benign Het
Ipo7 G T 7: 109,648,838 (GRCm39) D704Y probably damaging Het
Jaml T A 9: 45,012,362 (GRCm39) I283N probably damaging Het
Jarid2 G T 13: 45,059,812 (GRCm39) M681I probably benign Het
Kif4-ps T C 12: 101,113,956 (GRCm39) L695P probably damaging Het
Kmt2d A G 15: 98,737,410 (GRCm39) probably benign Het
Krt25 T C 11: 99,212,023 (GRCm39) T205A probably benign Het
Lif T C 11: 4,219,051 (GRCm39) V110A possibly damaging Het
Ltbp1 T A 17: 75,617,154 (GRCm39) V1031E possibly damaging Het
Ltbr A G 6: 125,286,440 (GRCm39) S249P probably benign Het
Man2b1 A G 8: 85,819,653 (GRCm39) probably benign Het
Med16 A T 10: 79,738,916 (GRCm39) M290K possibly damaging Het
Mov10l1 C A 15: 88,891,830 (GRCm39) Q562K probably benign Het
Msantd2 C T 9: 37,434,227 (GRCm39) R357W probably damaging Het
Mtcl2 T C 2: 156,875,245 (GRCm39) E835G probably damaging Het
Mtmr6 T C 14: 60,534,108 (GRCm39) F449L probably damaging Het
Myt1l A T 12: 29,833,618 (GRCm39) probably null Het
Neb A G 2: 52,154,076 (GRCm39) F2345S probably damaging Het
Nlrp6 T C 7: 140,506,357 (GRCm39) V766A probably benign Het
Or11g27 T C 14: 50,771,403 (GRCm39) I178T probably damaging Het
Or4k36 A G 2: 111,145,844 (GRCm39) T7A probably benign Het
Or6d13 A T 6: 116,517,416 (GRCm39) M1L probably null Het
Or8k22 G A 2: 86,163,689 (GRCm39) R4C probably benign Het
Patj T A 4: 98,344,462 (GRCm39) D591E probably benign Het
Pde6d A G 1: 86,473,524 (GRCm39) F91L probably benign Het
Pitpnm2 G A 5: 124,265,332 (GRCm39) P757L probably damaging Het
Plcd4 A G 1: 74,603,584 (GRCm39) T662A probably benign Het
Podn C T 4: 107,880,558 (GRCm39) A31T probably damaging Het
Prss37 G A 6: 40,492,294 (GRCm39) R186* probably null Het
Psg20 T A 7: 18,414,947 (GRCm39) Y316F probably benign Het
Psmd1 T A 1: 86,006,422 (GRCm39) S263T possibly damaging Het
Pum1 C A 4: 130,396,581 (GRCm39) T112K possibly damaging Het
Rab3gap2 A T 1: 184,993,564 (GRCm39) D782V possibly damaging Het
Rasgrp2 T A 19: 6,454,425 (GRCm39) M156K probably benign Het
Reln G A 5: 22,174,083 (GRCm39) H2007Y probably damaging Het
Rhbdl2 T A 4: 123,718,712 (GRCm39) I222K probably damaging Het
Rimbp2 A G 5: 128,865,582 (GRCm39) S582P probably damaging Het
Rpe T C 1: 66,754,387 (GRCm39) M153T probably damaging Het
Sars1 T C 3: 108,341,472 (GRCm39) I114V probably benign Het
Scamp5 C A 9: 57,354,508 (GRCm39) V49F possibly damaging Het
Sec14l1 C T 11: 117,039,358 (GRCm39) probably benign Het
Serpinb8 A G 1: 107,533,617 (GRCm39) E224G probably damaging Het
Setd2 A G 9: 110,378,932 (GRCm39) S632G probably benign Het
Slco6c1 C T 1: 96,993,808 (GRCm39) R645H possibly damaging Het
Srgn T A 10: 62,343,413 (GRCm39) probably benign Het
Stk40 C T 4: 126,022,640 (GRCm39) T138I probably benign Het
Syt10 C T 15: 89,674,979 (GRCm39) D456N probably damaging Het
Tada3 T C 6: 113,347,976 (GRCm39) I263V possibly damaging Het
Tas2r106 A T 6: 131,655,317 (GRCm39) L178H probably damaging Het
Tas2r115 T A 6: 132,714,470 (GRCm39) R160S possibly damaging Het
Trak1 T A 9: 121,302,063 (GRCm39) *940R probably null Het
Trp53bp2 A G 1: 182,269,204 (GRCm39) M223V probably benign Het
Txnrd1 T A 10: 82,723,067 (GRCm39) C421S possibly damaging Het
Unc45a T C 7: 79,989,846 (GRCm39) T8A probably benign Het
Usp6nl T A 2: 6,445,748 (GRCm39) V552E probably damaging Het
Vmn2r115 T G 17: 23,578,297 (GRCm39) L590R probably damaging Het
Vmn2r88 A T 14: 51,650,665 (GRCm39) H126L probably benign Het
Vps13c A G 9: 67,826,616 (GRCm39) D1419G possibly damaging Het
Vwa3a A G 7: 120,391,641 (GRCm39) T776A probably benign Het
Zfp580 T C 7: 5,056,008 (GRCm39) Y123H probably 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
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'- CAGTTTGTCAAGGGACCTCTC -3'
(R):5'- AAGAACCGTTGGTCATTTGC -3'

Sequencing Primer
(F):5'- TTGTCAAGGGACCTCTCTATATTAC -3'
(R):5'- TCTCAGGTGAGAGAGTACCC -3'
Posted On 2014-09-18