Mutagenetix > Incidental Mutation

Incidental Mutation 'H8930:Ddx4'

540

Institutional Source

Beutler Lab

Gene Symbol

Ddx4

Ensembl Gene

ENSMUSG00000021758

Gene Name

DEAD box helicase 4

Synonyms

VASA, mvh / m'vasa, DEAD (Asp-Glu-Ala-Asp) box polypeptide 4, Mvh

Accession Numbers

Essential gene?

Possibly essential (E-score: 0.638) question?

Stock #

H8930 (G3) of strain frazz

Quality Score

Status

Validated

Chromosome

Chromosomal Location

112734867-112789009 bp(-) (GRCm39)

Type of Mutation

splice site

DNA Base Change (assembly)

A to C at 112750367 bp (GRCm39)

Zygosity

Homozygous

Amino Acid Change

Ref Sequence

ENSEMBL: ENSMUSP00000096769 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000075748] [ENSMUST00000099166]

AlphaFold

Q61496

Predicted Effect

probably null
Transcript: ENSMUST00000075748

SMART Domains

Protein: ENSMUSP00000075157
Gene: ENSMUSG00000021758

Domain	Start	End	E-Value	Type
Blast:DEXDc	22	165	8e-14	BLAST
low complexity region	175	183	N/A	INTRINSIC
low complexity region	221	229	N/A	INTRINSIC
DEXDc	280	491	9.38e-59	SMART
HELICc	527	608	1.18e-32	SMART

Predicted Effect

probably null
Transcript: ENSMUST00000099166

SMART Domains

Protein: ENSMUSP00000096769
Gene: ENSMUSG00000021758

Domain	Start	End	E-Value	Type
Blast:DEXDc	41	191	7e-25	BLAST
low complexity region	201	209	N/A	INTRINSIC
low complexity region	247	255	N/A	INTRINSIC
DEXDc	306	517	9.38e-59	SMART
HELICc	553	634	1.18e-32	SMART

Meta Mutation Damage Score

0.9755

Coding Region Coverage

1x: 77.1%
3x: 50.6%

Het Detection Efficiency

25.5%

Validation Efficiency

74% (89/120)

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 is a homolog of VASA proteins in Drosophila and several other species. The gene is specifically expressed in the germ cell lineage in both sexes and functions in germ cell development. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]
PHENOTYPE: Spermatogenesis is blocked in homozygous mutant mice, resulting in male infertility. Female mutant mice are fertile and do not exhibit any obvious reproductive defects. [provided by MGI curators]

Allele List at MGI

All alleles(5) : Targeted, other(3) Gene trapped(2)

Other mutations in this stock

Total: 7 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Cdc20b	A	T	13: 113,220,500 (GRCm39)	I460F	probably damaging	Homo
Cilk1	T	A	9: 78,057,901 (GRCm39)	I150N	possibly damaging	Het
Malt1	T	G	18: 65,595,886 (GRCm39)	Y442*	probably null	Het
Mtr	A	G	13: 12,250,346 (GRCm39)	S346P	probably damaging	Het
Nup155	T	C	15: 8,187,142 (GRCm39)	V1357A	possibly damaging	Het
Prl3c1	T	A	13: 27,384,689 (GRCm39)	L46*	probably null	Het
Spata1	A	T	3: 146,193,026 (GRCm39)	L155*	probably null	Homo

Other mutations in Ddx4

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL02030:Ddx4	APN	13	112,761,311 (GRCm39)	splice site	probably benign
IGL02682:Ddx4	APN	13	112,758,720 (GRCm39)	missense	probably benign	0.04
IGL02729:Ddx4	APN	13	112,787,946 (GRCm39)	utr 5 prime	probably benign
R0518:Ddx4	UTSW	13	112,761,313 (GRCm39)	critical splice donor site	probably null
R0521:Ddx4	UTSW	13	112,761,313 (GRCm39)	critical splice donor site	probably null
R1527:Ddx4	UTSW	13	112,758,773 (GRCm39)	missense	possibly damaging	0.95
R1548:Ddx4	UTSW	13	112,736,531 (GRCm39)	missense	probably damaging	1.00
R1773:Ddx4	UTSW	13	112,736,436 (GRCm39)	missense	probably benign
R1886:Ddx4	UTSW	13	112,759,199 (GRCm39)	missense	probably damaging	1.00
R1969:Ddx4	UTSW	13	112,757,276 (GRCm39)	missense	probably damaging	0.99
R1969:Ddx4	UTSW	13	112,736,547 (GRCm39)	missense	probably damaging	0.99
R1970:Ddx4	UTSW	13	112,736,547 (GRCm39)	missense	probably damaging	0.99
R1971:Ddx4	UTSW	13	112,736,547 (GRCm39)	missense	probably damaging	0.99
R2265:Ddx4	UTSW	13	112,757,810 (GRCm39)	missense	probably benign	0.08
R2280:Ddx4	UTSW	13	112,757,190 (GRCm39)	missense	probably benign	0.03
R2846:Ddx4	UTSW	13	112,741,146 (GRCm39)	missense	probably damaging	0.99
R2906:Ddx4	UTSW	13	112,757,311 (GRCm39)	splice site	probably benign
R2980:Ddx4	UTSW	13	112,748,619 (GRCm39)	missense	probably damaging	1.00
R3732:Ddx4	UTSW	13	112,748,516 (GRCm39)	missense	possibly damaging	0.56
R4085:Ddx4	UTSW	13	112,750,295 (GRCm39)	missense	probably benign	0.05
R4088:Ddx4	UTSW	13	112,750,295 (GRCm39)	missense	probably benign	0.05
R4089:Ddx4	UTSW	13	112,750,295 (GRCm39)	missense	probably benign	0.05
R4090:Ddx4	UTSW	13	112,750,295 (GRCm39)	missense	probably benign	0.05
R4600:Ddx4	UTSW	13	112,748,594 (GRCm39)	missense	probably damaging	1.00
R4610:Ddx4	UTSW	13	112,748,594 (GRCm39)	missense	probably damaging	1.00
R4669:Ddx4	UTSW	13	112,758,778 (GRCm39)	missense	probably damaging	1.00
R4700:Ddx4	UTSW	13	112,750,269 (GRCm39)	missense	probably damaging	1.00
R4782:Ddx4	UTSW	13	112,787,894 (GRCm39)	missense	probably benign	0.10
R4782:Ddx4	UTSW	13	112,750,230 (GRCm39)	critical splice donor site	probably null
R5326:Ddx4	UTSW	13	112,757,779 (GRCm39)	missense	probably damaging	1.00
R5542:Ddx4	UTSW	13	112,757,779 (GRCm39)	missense	probably damaging	1.00
R6111:Ddx4	UTSW	13	112,757,766 (GRCm39)	nonsense	probably null
R6253:Ddx4	UTSW	13	112,772,557 (GRCm39)	missense	probably benign	0.00
R6253:Ddx4	UTSW	13	112,772,556 (GRCm39)	nonsense	probably null
R6286:Ddx4	UTSW	13	112,750,269 (GRCm39)	missense	probably damaging	1.00
R6518:Ddx4	UTSW	13	112,741,081 (GRCm39)	missense	probably benign
R6645:Ddx4	UTSW	13	112,777,708 (GRCm39)	missense	possibly damaging	0.70
R7017:Ddx4	UTSW	13	112,738,022 (GRCm39)	missense	probably damaging	1.00
R7155:Ddx4	UTSW	13	112,750,319 (GRCm39)	missense	probably benign	0.01
R7822:Ddx4	UTSW	13	112,748,647 (GRCm39)	missense	probably damaging	1.00
R7921:Ddx4	UTSW	13	112,738,041 (GRCm39)	missense	probably benign
R8041:Ddx4	UTSW	13	112,762,928 (GRCm39)	missense	probably benign
R8048:Ddx4	UTSW	13	112,758,706 (GRCm39)	missense	probably null	1.00
R8939:Ddx4	UTSW	13	112,758,823 (GRCm39)	missense	probably benign	0.21
R9325:Ddx4	UTSW	13	112,736,441 (GRCm39)	missense	probably damaging	0.96

Nature of Mutation

DNA sequencing using the SOLiD technique identified a T to G transversion at base pair 113404041 in the Genbank genomic region NC_000079 (Build 37.1) for the Ddx4 gene on Chromosome 13 (TTATCTATAG ->TTAGCTATAG). The mutation is located within intron 13 from the ATG exon, seven nucleotides to the next exon. The Ddx4 gene contains 22 total exons (Genbank record NM_001145885). Two transcripts of the Ddx4 gene are displayed on Ensembl. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).

Protein Function and Prediction

The Ddx4 gene encodes a 702 amino acid protein that plays a role in germ cell development. The protein is an ATP-dependent RNA helicase and is expressed specifically in the testis. DDX4 contains an ATP-binding helicase domain at residues 292-475, and a C-terminal helicase domain at residues 503-648. A Q motif and a helicase DEAD box motif are present at amino acids 261-289 and 419-422, respectively. ATP-binding occurs at amino acids 305-312 (Uniprot Q61496). Isoform 1 (displayed on Genbank) contains 728 amino acids. Spermatogenesis is blocked in homozygous mutant mice, resulting in male infertility. Female mutant mice are fertile and do not exhibit any obvious reproductive defects.

Posted On

2010-11-11