Mutagenetix > Incidental Mutation

Incidental Mutation 'F6893:Dscam'

181

Institutional Source

Beutler Lab

Gene Symbol

Dscam

Ensembl Gene

ENSMUSG00000050272

Gene Name

DS cell adhesion molecule

Synonyms

4932410A21Rik, Down syndrome cell adhesion molecule

Accession Numbers

Essential gene?

Essential (E-score: 1.000) question?

Stock #

F6893 (G3) of strain busy

Quality Score

Status

Validated

Chromosome

Chromosomal Location

96392040-96971952 bp(-) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

G to T at 96857660 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Histidine to Asparagine at position 117 (H117N)

Ref Sequence

ENSEMBL: ENSMUSP00000056040 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000056102]

AlphaFold

Q9ERC8

Predicted Effect

possibly damaging
Transcript: ENSMUST00000056102
AA Change: H117N

PolyPhen 2 Score 0.781 (Sensitivity: 0.85; Specificity: 0.93)

SMART Domains

Protein: ENSMUSP00000056040
Gene: ENSMUSG00000050272
AA Change: H117N

Domain	Start	End	E-Value	Type
IG_like	37	109	1.47e0	SMART
IG	130	218	8.33e-1	SMART
IGc2	237	300	8.7e-13	SMART
IGc2	326	392	1.24e-8	SMART
IGc2	419	491	1.1e-9	SMART
IGc2	516	582	1.99e-7	SMART
IGc2	608	676	1.84e-11	SMART
IGc2	702	773	6.01e-16	SMART
IG	794	883	1.73e-7	SMART
FN3	885	969	7.34e-9	SMART
FN3	985	1073	4.06e-11	SMART
FN3	1088	1174	7.23e-8	SMART
FN3	1189	1270	2.6e-9	SMART
IGc2	1301	1366	2.05e-9	SMART
FN3	1380	1460	7.17e-12	SMART
FN3	1477	1557	4.35e1	SMART
transmembrane domain	1595	1617	N/A	INTRINSIC
low complexity region	1799	1809	N/A	INTRINSIC

Meta Mutation Damage Score

0.1930

Coding Region Coverage

1x: 88.7%
3x: 74.0%

Validation Efficiency

88% (165/188)

MGI Phenotype

FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene is a member of the immunoglobulin superfamily of cell adhesion molecules (Ig-CAMs), and is involved in human central and peripheral nervous system development. This gene is a candidate for Down syndrome and congenital heart disease (DSCHD). A gene encoding a similar Ig-CAM protein is located on chromosome 11. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Oct 2012]
PHENOTYPE: Mice homozygous for a null allele exhibit background-sensitive perinatal lethality associated with respiratory distress, altered C4 ventral root and pre-inspiratory neuron signaling, and abnormal response to hypercapnia. [provided by MGI curators]

Allele List at MGI

All alleles(9) : Targeted(6) Gene trapped(1) Spontaneous(2)

Other mutations in this stock

Total: 35 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Abca14	G	A	7: 119,924,261 (GRCm39)	V1638M	probably damaging	Het
Agrn	C	T	4: 156,258,636 (GRCm39)	R972Q	probably benign	Het
Anxa3	T	C	5: 96,972,853 (GRCm39)		probably benign	Het
Bpifa6	G	T	2: 153,829,078 (GRCm39)	D202Y	probably damaging	Het
Ccdc15	G	A	9: 37,226,936 (GRCm39)	T346I	probably damaging	Homo
Celsr3	G	A	9: 108,712,266 (GRCm39)	R1731H	probably benign	Het
Ces4a	A	G	8: 105,873,859 (GRCm39)	R443G	possibly damaging	Het
Chd2	T	C	7: 73,157,620 (GRCm39)	Q175R	possibly damaging	Het
Dpyd	T	A	3: 118,597,783 (GRCm39)		probably null	Het
F13a1	A	G	13: 37,155,999 (GRCm39)	Y205H	probably damaging	Het
Fat3	A	C	9: 15,918,085 (GRCm39)	L1446R	probably damaging	Homo
Golga4	T	C	9: 118,382,525 (GRCm39)	L515S	probably damaging	Het
Hoxb1	A	T	11: 96,256,728 (GRCm39)	T26S	probably benign	Het
Igsf10	T	G	3: 59,238,481 (GRCm39)	T567P	probably damaging	Het
Lamb2	T	C	9: 108,359,755 (GRCm39)	V365A	probably benign	Het
Mepe	A	G	5: 104,485,242 (GRCm39)	I127M	possibly damaging	Het
Mpi	A	T	9: 57,453,832 (GRCm39)	M230K	probably benign	Homo
Myh4	A	G	11: 67,146,283 (GRCm39)	D1447G	probably null	Homo
Or1f19	A	G	16: 3,411,027 (GRCm39)	I256V	possibly damaging	Het
Or1j4	A	G	2: 36,740,819 (GRCm39)	T254A	probably benign	Het
Panx2	T	C	15: 88,952,213 (GRCm39)	Y227H	probably damaging	Homo
Pdzd7	A	G	19: 45,025,173 (GRCm39)	W441R	probably damaging	Het
Poldip2	A	G	11: 78,410,020 (GRCm39)	I267M	probably damaging	Homo
Pros1	T	A	16: 62,745,002 (GRCm39)	V539E	probably damaging	Het
Sacs	T	C	14: 61,450,425 (GRCm39)	M4157T	probably benign	Het
Slc45a3	A	G	1: 131,909,075 (GRCm39)	E424G	probably benign	Homo
Slc9a1	A	G	4: 133,149,457 (GRCm39)	E761G	probably benign	Homo
Stab2	G	A	10: 86,691,035 (GRCm39)	P2178L	probably damaging	Het
Syt4	C	T	18: 31,577,274 (GRCm39)	V27I	possibly damaging	Homo
Thumpd1	T	A	7: 119,319,799 (GRCm39)	K56*	probably null	Het
Tpr	A	G	1: 150,269,313 (GRCm39)	K19E	possibly damaging	Homo
Ttll10	A	G	4: 156,132,775 (GRCm39)	I74T	probably benign	Het
Txnrd1	C	T	10: 82,702,823 (GRCm39)	Q95*	probably null	Homo
Zc3h7b	A	G	15: 81,662,872 (GRCm39)	E421G	possibly damaging	Homo
Zc3hc1	G	T	6: 30,387,525 (GRCm39)	D51E	probably benign	Homo

Other mutations in Dscam

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL00515:Dscam	APN	16	96,409,265 (GRCm39)	missense	possibly damaging	0.64
IGL00841:Dscam	APN	16	96,621,077 (GRCm39)	missense	probably damaging	1.00
IGL01289:Dscam	APN	16	96,445,082 (GRCm39)	nonsense	probably null
IGL01358:Dscam	APN	16	96,411,543 (GRCm39)	missense	possibly damaging	0.68
IGL01431:Dscam	APN	16	96,453,278 (GRCm39)	critical splice donor site	probably null
IGL01444:Dscam	APN	16	96,474,909 (GRCm39)	missense	possibly damaging	0.95
IGL01767:Dscam	APN	16	96,456,136 (GRCm39)	missense	probably damaging	1.00
IGL01866:Dscam	APN	16	96,486,550 (GRCm39)	missense	probably benign	0.06
IGL02020:Dscam	APN	16	96,517,269 (GRCm39)	missense	probably damaging	1.00
IGL02023:Dscam	APN	16	96,602,397 (GRCm39)	missense	probably benign	0.06
IGL02057:Dscam	APN	16	96,517,273 (GRCm39)	nonsense	probably null
IGL02389:Dscam	APN	16	96,442,097 (GRCm39)	missense	probably benign	0.27
IGL02409:Dscam	APN	16	96,621,088 (GRCm39)	missense	possibly damaging	0.46
IGL02694:Dscam	APN	16	96,394,476 (GRCm39)	missense	probably benign	0.00
IGL02899:Dscam	APN	16	96,510,447 (GRCm39)	missense	probably damaging	0.98
IGL02956:Dscam	APN	16	96,602,472 (GRCm39)	missense	probably damaging	0.98
IGL03035:Dscam	APN	16	96,621,170 (GRCm39)	missense	possibly damaging	0.94
IGL03191:Dscam	APN	16	96,621,969 (GRCm39)	missense	probably benign	0.36
growler	UTSW	16	96,622,197 (GRCm39)	missense	probably damaging	0.99
Twostep	UTSW	16	96,626,982 (GRCm39)	splice site	probably null
K3955:Dscam	UTSW	16	96,474,887 (GRCm39)	missense	probably benign	0.00
R0024:Dscam	UTSW	16	96,394,585 (GRCm39)	nonsense	probably null
R0057:Dscam	UTSW	16	96,474,936 (GRCm39)	missense	probably damaging	1.00
R0057:Dscam	UTSW	16	96,474,936 (GRCm39)	missense	probably damaging	1.00
R0117:Dscam	UTSW	16	96,474,878 (GRCm39)	missense	probably benign	0.33
R0211:Dscam	UTSW	16	96,517,279 (GRCm39)	missense	possibly damaging	0.50
R0280:Dscam	UTSW	16	96,840,206 (GRCm39)	missense	possibly damaging	0.62
R0355:Dscam	UTSW	16	96,456,105 (GRCm39)	missense	probably benign	0.00
R0380:Dscam	UTSW	16	96,857,810 (GRCm39)	missense	probably damaging	1.00
R0445:Dscam	UTSW	16	96,573,703 (GRCm39)	missense	probably damaging	1.00
R0492:Dscam	UTSW	16	96,626,982 (GRCm39)	splice site	probably null
R0534:Dscam	UTSW	16	96,453,372 (GRCm39)	missense	possibly damaging	0.67
R0593:Dscam	UTSW	16	96,573,608 (GRCm39)	missense	probably benign	0.19
R0707:Dscam	UTSW	16	96,626,982 (GRCm39)	splice site	probably null
R0738:Dscam	UTSW	16	96,620,981 (GRCm39)	missense	possibly damaging	0.48
R1017:Dscam	UTSW	16	96,634,633 (GRCm39)	missense	probably damaging	1.00
R1377:Dscam	UTSW	16	96,573,694 (GRCm39)	missense	probably damaging	1.00
R1440:Dscam	UTSW	16	96,621,151 (GRCm39)	missense	probably damaging	1.00
R1442:Dscam	UTSW	16	96,409,274 (GRCm39)	missense	possibly damaging	0.94
R1464:Dscam	UTSW	16	96,602,453 (GRCm39)	missense	possibly damaging	0.94
R1464:Dscam	UTSW	16	96,602,453 (GRCm39)	missense	possibly damaging	0.94
R1478:Dscam	UTSW	16	96,592,110 (GRCm39)	missense	probably benign	0.15
R1530:Dscam	UTSW	16	96,621,074 (GRCm39)	missense	probably damaging	1.00
R1731:Dscam	UTSW	16	96,621,076 (GRCm39)	missense	probably damaging	1.00
R1765:Dscam	UTSW	16	96,486,579 (GRCm39)	missense	probably benign	0.00
R1824:Dscam	UTSW	16	96,626,781 (GRCm39)	missense	probably benign	0.00
R1933:Dscam	UTSW	16	96,394,414 (GRCm39)	missense	probably benign	0.00
R2005:Dscam	UTSW	16	96,840,120 (GRCm39)	missense	probably benign	0.02
R2006:Dscam	UTSW	16	96,621,112 (GRCm39)	missense	probably damaging	1.00
R2101:Dscam	UTSW	16	96,411,549 (GRCm39)	missense	probably benign	0.00
R2177:Dscam	UTSW	16	96,411,524 (GRCm39)	missense	probably damaging	0.98
R2342:Dscam	UTSW	16	96,420,702 (GRCm39)	missense	probably damaging	1.00
R2851:Dscam	UTSW	16	96,423,915 (GRCm39)	missense	possibly damaging	0.94
R2929:Dscam	UTSW	16	96,486,612 (GRCm39)	missense	possibly damaging	0.76
R3055:Dscam	UTSW	16	96,602,555 (GRCm39)	missense	probably damaging	1.00
R3157:Dscam	UTSW	16	96,479,710 (GRCm39)	missense	probably benign	0.16
R3159:Dscam	UTSW	16	96,479,710 (GRCm39)	missense	probably benign	0.16
R3944:Dscam	UTSW	16	96,622,197 (GRCm39)	missense	probably damaging	0.99
R4080:Dscam	UTSW	16	96,484,972 (GRCm39)	missense	probably benign	0.01
R4285:Dscam	UTSW	16	96,510,309 (GRCm39)	critical splice donor site	probably null
R4384:Dscam	UTSW	16	96,510,416 (GRCm39)	missense	probably damaging	0.99
R4460:Dscam	UTSW	16	96,411,519 (GRCm39)	missense	probably damaging	1.00
R4575:Dscam	UTSW	16	96,626,823 (GRCm39)	missense	possibly damaging	0.82
R4594:Dscam	UTSW	16	96,519,196 (GRCm39)	missense	possibly damaging	0.78
R4643:Dscam	UTSW	16	96,486,501 (GRCm39)	missense	probably damaging	0.96
R4698:Dscam	UTSW	16	96,411,524 (GRCm39)	missense	probably damaging	1.00
R4716:Dscam	UTSW	16	96,420,771 (GRCm39)	missense	possibly damaging	0.80
R4743:Dscam	UTSW	16	96,631,256 (GRCm39)	missense	probably benign	0.00
R4766:Dscam	UTSW	16	96,445,188 (GRCm39)	missense	probably benign	0.02
R4899:Dscam	UTSW	16	96,485,018 (GRCm39)	missense	probably benign	0.01
R4987:Dscam	UTSW	16	96,498,721 (GRCm39)	missense	probably benign	0.00
R4990:Dscam	UTSW	16	96,626,715 (GRCm39)	missense	probably benign	0.12
R5123:Dscam	UTSW	16	96,573,637 (GRCm39)	missense	probably damaging	1.00
R5130:Dscam	UTSW	16	96,620,979 (GRCm39)	missense	probably benign	0.00
R5328:Dscam	UTSW	16	96,474,878 (GRCm39)	missense	probably benign	0.33
R5666:Dscam	UTSW	16	96,519,364 (GRCm39)	missense	probably benign	0.23
R5670:Dscam	UTSW	16	96,519,364 (GRCm39)	missense	probably benign	0.23
R5678:Dscam	UTSW	16	96,592,100 (GRCm39)	missense	probably benign	0.16
R5827:Dscam	UTSW	16	96,451,191 (GRCm39)	critical splice donor site	probably null
R5907:Dscam	UTSW	16	96,622,120 (GRCm39)	missense	probably damaging	0.97
R6032:Dscam	UTSW	16	96,451,191 (GRCm39)	critical splice donor site	probably null
R6032:Dscam	UTSW	16	96,451,191 (GRCm39)	critical splice donor site	probably null
R6103:Dscam	UTSW	16	96,626,781 (GRCm39)	missense	probably benign
R6240:Dscam	UTSW	16	96,420,702 (GRCm39)	missense	probably damaging	1.00
R6257:Dscam	UTSW	16	96,474,914 (GRCm39)	missense	possibly damaging	0.94
R6361:Dscam	UTSW	16	96,424,011 (GRCm39)	missense	probably benign	0.08
R6405:Dscam	UTSW	16	96,479,625 (GRCm39)	missense	probably damaging	1.00
R6444:Dscam	UTSW	16	96,420,844 (GRCm39)	missense	probably damaging	1.00
R6560:Dscam	UTSW	16	96,626,935 (GRCm39)	missense	probably benign	0.00
R6598:Dscam	UTSW	16	96,620,984 (GRCm39)	missense	probably damaging	1.00
R6622:Dscam	UTSW	16	96,446,273 (GRCm39)	missense	probably benign	0.06
R6792:Dscam	UTSW	16	96,449,437 (GRCm39)	missense	probably damaging	1.00
R6792:Dscam	UTSW	16	96,394,455 (GRCm39)	missense	probably damaging	0.96
R6827:Dscam	UTSW	16	96,840,191 (GRCm39)	missense	probably damaging	1.00
R6868:Dscam	UTSW	16	96,631,140 (GRCm39)	missense	probably damaging	1.00
R6898:Dscam	UTSW	16	96,631,100 (GRCm39)	missense	probably benign	0.02
R6903:Dscam	UTSW	16	96,621,988 (GRCm39)	missense	probably damaging	1.00
R7051:Dscam	UTSW	16	96,620,986 (GRCm39)	missense	probably benign	0.01
R7146:Dscam	UTSW	16	96,631,117 (GRCm39)	nonsense	probably null
R7180:Dscam	UTSW	16	96,626,764 (GRCm39)	missense	probably damaging	0.97
R7209:Dscam	UTSW	16	96,451,544 (GRCm39)	splice site	probably null
R7247:Dscam	UTSW	16	96,622,008 (GRCm39)	missense	probably damaging	0.99
R7269:Dscam	UTSW	16	96,479,601 (GRCm39)	missense	probably benign	0.00
R7301:Dscam	UTSW	16	96,857,732 (GRCm39)	missense	probably benign	0.01
R7328:Dscam	UTSW	16	96,446,235 (GRCm39)	nonsense	probably null
R7368:Dscam	UTSW	16	96,445,131 (GRCm39)	missense	probably benign	0.00
R7425:Dscam	UTSW	16	96,430,598 (GRCm39)	missense	probably damaging	1.00
R7474:Dscam	UTSW	16	96,621,089 (GRCm39)	missense	possibly damaging	0.88
R7536:Dscam	UTSW	16	96,442,226 (GRCm39)	splice site	probably null
R7624:Dscam	UTSW	16	96,411,524 (GRCm39)	missense	probably damaging	1.00
R7766:Dscam	UTSW	16	96,592,101 (GRCm39)	missense	probably benign	0.31
R7817:Dscam	UTSW	16	96,442,064 (GRCm39)	missense	probably benign
R7843:Dscam	UTSW	16	96,626,830 (GRCm39)	missense	probably damaging	0.99
R7911:Dscam	UTSW	16	96,445,122 (GRCm39)	missense	probably benign	0.01
R8108:Dscam	UTSW	16	96,445,079 (GRCm39)	missense	probably benign	0.01
R8128:Dscam	UTSW	16	96,602,374 (GRCm39)	splice site	probably null
R8770:Dscam	UTSW	16	96,456,106 (GRCm39)	missense	possibly damaging	0.50
R8876:Dscam	UTSW	16	96,420,828 (GRCm39)	missense	probably damaging	0.96
R9005:Dscam	UTSW	16	96,602,580 (GRCm39)	missense	probably damaging	1.00
R9009:Dscam	UTSW	16	96,840,116 (GRCm39)	missense	probably benign	0.10
R9168:Dscam	UTSW	16	96,420,768 (GRCm39)	missense	possibly damaging	0.82
R9176:Dscam	UTSW	16	96,486,553 (GRCm39)	missense	probably benign	0.37
R9244:Dscam	UTSW	16	96,486,429 (GRCm39)	missense	possibly damaging	0.62
R9339:Dscam	UTSW	16	96,517,263 (GRCm39)	missense	possibly damaging	0.89
R9374:Dscam	UTSW	16	96,857,857 (GRCm39)	missense	probably benign	0.19
R9385:Dscam	UTSW	16	96,840,203 (GRCm39)	missense	probably benign
R9674:Dscam	UTSW	16	96,442,036 (GRCm39)	missense	probably benign	0.03
X0025:Dscam	UTSW	16	96,510,361 (GRCm39)	missense	probably damaging	1.00
Z1088:Dscam	UTSW	16	96,573,761 (GRCm39)	missense	probably benign	0.01
Z1177:Dscam	UTSW	16	96,409,389 (GRCm39)	missense	probably damaging	0.98

Nature of Mutation

DNA sequencing using the SOLiD technique identified a C to A transversion at position 808 of the Dscam transcript in exon 2 of 33 total exons. The mutated nucleotide causes a histidine to arginine substitution at amino acid 117 of the encoded protein. Three transcripts of the Dscam gene are displayed on Ensembl. The mutation has been confirmed by DNA sequencing using the Sanger method (Figure 1).

Protein Function and Prediction

The Dscam gene encodes a 2013 amino acid single-pass type I membrane protein and cell adhesion molecule that plays a role in neuronal self-avoidance. DSCAM promotes repulsion between specific neuronal processes of either the same cell or the same subtype of cells, and is a receptor for netrin required for axon guidance independently of and in collaboration with the receptor DCC. In spinal chord development, DSCAM plays a role in guiding commissural axons projection and pathfinding across the ventral midline to reach the floor plate upon ligand binding. DSCAM contains six fibronectin type III domains and ten immunoglobin (Ig)-like C2-type domains (Uniprot Q9ERC8). Mice homozygous for a null allele exhibit background-sensitive perinatal lethality associated with respiratory distress, altered C4 ventral root and pre-inspiratory neuron signaling, and abnormal response to hypercapnia.

The H117N change is located in the first Ig-like C2-type domain, and is predicted to be probably damaging by the PolyPhen program.

Posted On

2010-05-03