Incidental Mutation 'R2241:Ddx20'
ID 240654
Institutional Source Beutler Lab
Gene Symbol Ddx20
Ensembl Gene ENSMUSG00000027905
Gene Name DEAD box helicase 20
Synonyms DEAD (Asp-Glu-Ala-Asp) box polypeptide 20, GEMIN3, dp103
MMRRC Submission 040241-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R2241 (G1)
Quality Score 225
Status Not validated
Chromosome 3
Chromosomal Location 105585586-105594890 bp(-) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) A to C at 105590521 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Tyrosine to Stop codon at position 258 (Y258*)
Ref Sequence ENSEMBL: ENSMUSP00000088176 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000090680] [ENSMUST00000200078]
AlphaFold Q9JJY4
Predicted Effect probably null
Transcript: ENSMUST00000090680
AA Change: Y258*
SMART Domains Protein: ENSMUSP00000088176
Gene: ENSMUSG00000027905
AA Change: Y258*

DomainStartEndE-ValueType
low complexity region 20 33 N/A INTRINSIC
DEXDc 82 280 7.47e-44 SMART
HELICc 324 405 2.8e-25 SMART
low complexity region 434 445 N/A INTRINSIC
low complexity region 646 668 N/A INTRINSIC
Predicted Effect noncoding transcript
Transcript: ENSMUST00000132008
Predicted Effect probably benign
Transcript: ENSMUST00000200078
SMART Domains Protein: ENSMUSP00000142675
Gene: ENSMUSG00000027905

DomainStartEndE-ValueType
low complexity region 20 33 N/A INTRINSIC
Pfam:DEAD 87 134 7.6e-5 PFAM
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.5%
  • 10x: 97.1%
  • 20x: 94.7%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases. They are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Based on their distribution patterns, some members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. This gene encodes a DEAD box protein, which has an ATPase activity and is a component of the survival of motor neurons (SMN) complex. This protein interacts directly with SMN, the spinal muscular atrophy gene product, and may play a catalytic role in the function of the SMN complex on RNPs. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygous for a null allele fail to implant and develop past the 2-cell stage. Heterozygous null females are viable, healthy and fertile but show increased ovary weight, a greater number of empty follicles, a prolonged estrous phase, and reduced nocturnal and stress-induced serum ACTH levels. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 27 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adcy8 G T 15: 64,571,230 (GRCm39) L1138I possibly damaging Het
Aftph T C 11: 20,676,328 (GRCm39) D427G possibly damaging Het
Cep350 C T 1: 155,834,302 (GRCm39) probably null Het
Clca4b A T 3: 144,616,987 (GRCm39) S888T probably benign Het
Cyb5b A G 8: 107,897,045 (GRCm39) D105G probably benign Het
Farp2 C T 1: 93,507,625 (GRCm39) T441I probably benign Het
Fzd6 G T 15: 38,894,931 (GRCm39) A366S probably damaging Het
Gpr149 A G 3: 62,511,474 (GRCm39) V175A probably benign Het
Hivep2 C A 10: 14,004,713 (GRCm39) T437K probably benign Het
Itga4 T A 2: 79,131,357 (GRCm39) I575N probably damaging Het
Kcnj14 C T 7: 45,469,325 (GRCm39) R60H probably benign Het
Lrch3 A G 16: 32,816,211 (GRCm39) T151A probably damaging Het
Mslnl G A 17: 25,961,908 (GRCm39) V128M probably damaging Het
Mterf2 T C 10: 84,956,180 (GRCm39) N148S possibly damaging Het
Nae1 A C 8: 105,246,420 (GRCm39) D268E probably benign Het
Or5p5 T C 7: 107,414,040 (GRCm39) V83A possibly damaging Het
Or6c211 G A 10: 129,505,764 (GRCm39) T208I probably damaging Het
Or8b48 A G 9: 38,493,101 (GRCm39) H176R probably damaging Het
Pcnx4 T C 12: 72,620,928 (GRCm39) L916P probably damaging Het
Prune2 T A 19: 17,100,456 (GRCm39) Y1987N probably damaging Het
Rsf1 ATGGCG ATGGCGACGGTGGCG 7: 97,229,111 (GRCm39) probably benign Het
Ryr3 A G 2: 112,631,737 (GRCm39) L2096P probably damaging Het
Serpina3m G A 12: 104,355,708 (GRCm39) S125N probably benign Het
Tep1 G C 14: 51,091,667 (GRCm39) R625G probably benign Het
Vmn2r102 T C 17: 19,897,003 (GRCm39) Y117H probably benign Het
Wdfy4 A T 14: 32,795,468 (GRCm39) N2091K possibly damaging Het
Yme1l1 C T 2: 23,086,912 (GRCm39) R673* probably null Het
Other mutations in Ddx20
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01583:Ddx20 APN 3 105,593,986 (GRCm39) missense probably damaging 1.00
IGL01832:Ddx20 APN 3 105,586,327 (GRCm39) missense probably damaging 0.99
IGL02072:Ddx20 APN 3 105,587,943 (GRCm39) missense probably damaging 1.00
IGL02821:Ddx20 APN 3 105,586,593 (GRCm39) missense probably benign 0.00
R0520:Ddx20 UTSW 3 105,594,692 (GRCm39) missense probably benign
R0600:Ddx20 UTSW 3 105,586,396 (GRCm39) missense probably damaging 1.00
R1648:Ddx20 UTSW 3 105,586,504 (GRCm39) missense probably benign 0.08
R1817:Ddx20 UTSW 3 105,585,896 (GRCm39) nonsense probably null
R1843:Ddx20 UTSW 3 105,586,398 (GRCm39) missense probably benign 0.00
R1922:Ddx20 UTSW 3 105,585,900 (GRCm39) missense probably damaging 1.00
R1955:Ddx20 UTSW 3 105,586,878 (GRCm39) missense possibly damaging 0.79
R1993:Ddx20 UTSW 3 105,586,660 (GRCm39) nonsense probably null
R2215:Ddx20 UTSW 3 105,587,656 (GRCm39) splice site probably benign
R2315:Ddx20 UTSW 3 105,586,015 (GRCm39) missense probably damaging 1.00
R4156:Ddx20 UTSW 3 105,586,249 (GRCm39) missense probably benign 0.41
R4790:Ddx20 UTSW 3 105,590,485 (GRCm39) missense probably benign 0.02
R4962:Ddx20 UTSW 3 105,587,921 (GRCm39) missense possibly damaging 0.95
R5072:Ddx20 UTSW 3 105,590,191 (GRCm39) critical splice donor site probably null
R5361:Ddx20 UTSW 3 105,590,825 (GRCm39) missense probably damaging 0.96
R5622:Ddx20 UTSW 3 105,586,327 (GRCm39) missense probably damaging 0.99
R5936:Ddx20 UTSW 3 105,587,903 (GRCm39) missense possibly damaging 0.96
R6007:Ddx20 UTSW 3 105,590,736 (GRCm39) missense possibly damaging 0.68
R6192:Ddx20 UTSW 3 105,586,036 (GRCm39) missense probably benign
R6916:Ddx20 UTSW 3 105,587,929 (GRCm39) missense probably damaging 1.00
R6957:Ddx20 UTSW 3 105,591,626 (GRCm39) missense probably benign 0.30
R6970:Ddx20 UTSW 3 105,587,674 (GRCm39) missense probably damaging 1.00
R8366:Ddx20 UTSW 3 105,594,695 (GRCm39) missense probably benign 0.37
R9176:Ddx20 UTSW 3 105,586,158 (GRCm39) missense probably benign 0.01
R9221:Ddx20 UTSW 3 105,587,685 (GRCm39) nonsense probably null
R9326:Ddx20 UTSW 3 105,591,735 (GRCm39) missense probably damaging 1.00
R9336:Ddx20 UTSW 3 105,585,903 (GRCm39) missense possibly damaging 0.93
Predicted Primers PCR Primer
(F):5'- ATTGACAACTTGGTAGTACTGCTTC -3'
(R):5'- TTGCACCAAAGCATTTCTCTATAGC -3'

Sequencing Primer
(F):5'- CAACTTGGTAGTACTGCTTCAAACC -3'
(R):5'- AAAGCATTTCTCTATAGCTTTCCCGG -3'
Posted On 2014-10-15