Mutagenetix > Incidental Mutation

Incidental Mutation 'R0024:Dscam'

15146

Institutional Source

Beutler Lab

Gene Symbol

Dscam

Ensembl Gene

ENSMUSG00000050272

Gene Name

DS cell adhesion molecule

Synonyms

4932410A21Rik

MMRRC Submission

038319-MU

Accession Numbers

Genbank: NM_031174; MGI: 1196281

Is this an essential gene?

Essential (E-score: 1.000) question?

Stock #

R0024 (G1)

Quality Score

Status

Validated

Chromosome

Chromosomal Location

96592079-97170752 bp(-) (GRCm38)

Type of Mutation

nonsense

DNA Base Change (assembly)

G to A at 96593385 bp (GRCm38)

Zygosity

Heterozygous

Amino Acid Change

Arginine to Stop codon at position 1906 (R1906*)

Ref Sequence

ENSEMBL: ENSMUSP00000056040 (fasta)

Gene Model

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

AlphaFold

Q9ERC8

Predicted Effect

probably null
Transcript: ENSMUST00000056102
AA Change: R1906*

SMART Domains

Protein: ENSMUSP00000056040
Gene: ENSMUSG00000050272
AA Change: R1906*

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

0.9755

Coding Region Coverage

1x: 79.2%
3x: 69.7%
10x: 44.0%
20x: 23.5%

Validation Efficiency

95% (75/79)

MGI Phenotype

Strain: 4830358; 3840666;5305025;3761008
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: 40 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Adgre5	T	C	8: 83,728,284	T260A	probably damaging	Het
Ahctf1	G	A	1: 179,752,436	T2067M	probably damaging	Het
Akip1	T	C	7: 109,704,138	S63P	probably benign	Het
Ankrd34c	G	A	9: 89,729,527	P254S	possibly damaging	Het
Aqp8	T	C	7: 123,467,440	I256T	probably benign	Het
Arnt2	A	G	7: 84,284,126	V308A	probably benign	Het
Astn1	G	A	1: 158,684,215	S1209N	probably damaging	Het
Atf7ip	T	C	6: 136,599,820		probably benign	Het
Bbx	T	A	16: 50,224,918	M427L	probably benign	Het
Cadm4	T	C	7: 24,502,744	L336P	probably benign	Het
Camk2d	A	G	3: 126,797,723	M281V	probably benign	Het
Dll3	A	G	7: 28,300,161		probably benign	Het
Dst	C	T	1: 34,189,119	P1606L	probably damaging	Het
Eif2ak3	A	G	6: 70,892,356	T676A	probably benign	Het
Entpd5	T	C	12: 84,373,733	M428T	probably benign	Het
Fry	T	G	5: 150,380,803	S553A	probably benign	Het
Gls2	G	A	10: 128,199,256	R86H	probably damaging	Het
Gm14340	T	A	2: 180,824,250		noncoding transcript	Het
Gm9457	A	C	8: 4,813,131		noncoding transcript	Het
Hfm1	T	C	5: 106,856,924	K1179E	probably benign	Het
Iqgap1	T	C	7: 80,751,939	T473A	probably benign	Het
Krt34	A	T	11: 100,041,037	C119S	probably benign	Het
Krt6a	A	G	15: 101,690,715		probably benign	Het
Lysmd4	A	G	7: 67,226,080	T164A	probably benign	Het
Mroh2b	T	A	15: 4,925,627	Y701N	probably damaging	Het
Pi4ka	T	C	16: 17,315,535		probably benign	Het
Plcb1	A	G	2: 135,362,425	S900G	probably benign	Het
Plxna2	T	A	1: 194,643,995	I79N	possibly damaging	Het
Prpf31	C	A	7: 3,636,659		probably null	Het
Ptpro	T	A	6: 137,443,594	V1007D	probably damaging	Het
Rsc1a1	T	C	4: 141,685,272	K110E	probably benign	Het
Sin3a	T	A	9: 57,118,253		probably benign	Het
Slc24a2	T	C	4: 87,028,240		probably benign	Het
Slc6a3	A	T	13: 73,540,837		probably benign	Het
St5	T	C	7: 109,524,659	H1131R	probably damaging	Het
Sugct	G	A	13: 16,857,869	H433Y	probably benign	Het
Sycp2l	A	G	13: 41,141,788	I310M	probably damaging	Het
Tpm3	C	A	3: 90,087,449		probably null	Het
Ttc27	T	C	17: 74,770,264	F385L	possibly damaging	Het
Utrn	A	G	10: 12,406,011	V3301A	probably benign	Het

Other mutations in Dscam

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL00515:Dscam	APN	16	96608065	missense	possibly damaging	0.64
IGL00841:Dscam	APN	16	96819877	missense	probably damaging	1.00
IGL01289:Dscam	APN	16	96643882	nonsense	probably null
IGL01358:Dscam	APN	16	96610343	missense	possibly damaging	0.68
IGL01431:Dscam	APN	16	96652078	critical splice donor site	probably null
IGL01444:Dscam	APN	16	96673709	missense	possibly damaging	0.95
IGL01767:Dscam	APN	16	96654936	missense	probably damaging	1.00
IGL01866:Dscam	APN	16	96685350	missense	probably benign	0.06
IGL02020:Dscam	APN	16	96716069	missense	probably damaging	1.00
IGL02023:Dscam	APN	16	96801197	missense	probably benign	0.06
IGL02057:Dscam	APN	16	96716073	nonsense	probably null
IGL02389:Dscam	APN	16	96640897	missense	probably benign	0.27
IGL02409:Dscam	APN	16	96819888	missense	possibly damaging	0.46
IGL02694:Dscam	APN	16	96593276	missense	probably benign	0.00
IGL02899:Dscam	APN	16	96709247	missense	probably damaging	0.98
IGL02956:Dscam	APN	16	96801272	missense	probably damaging	0.98
IGL03035:Dscam	APN	16	96819970	missense	possibly damaging	0.94
IGL03191:Dscam	APN	16	96820769	missense	probably benign	0.36
growler	UTSW	16	96820997	missense	probably damaging	0.99
Twostep	UTSW	16	96825782	splice site	probably null
F6893:Dscam	UTSW	16	97056460	missense	possibly damaging	0.78
K3955:Dscam	UTSW	16	96673687	missense	probably benign	0.00
R0057:Dscam	UTSW	16	96673736	missense	probably damaging	1.00
R0057:Dscam	UTSW	16	96673736	missense	probably damaging	1.00
R0117:Dscam	UTSW	16	96673678	missense	probably benign	0.33
R0211:Dscam	UTSW	16	96716079	missense	possibly damaging	0.50
R0280:Dscam	UTSW	16	97039006	missense	possibly damaging	0.62
R0355:Dscam	UTSW	16	96654905	missense	probably benign	0.00
R0380:Dscam	UTSW	16	97056610	missense	probably damaging	1.00
R0445:Dscam	UTSW	16	96772503	missense	probably damaging	1.00
R0492:Dscam	UTSW	16	96825782	splice site	probably null
R0534:Dscam	UTSW	16	96652172	missense	possibly damaging	0.67
R0593:Dscam	UTSW	16	96772408	missense	probably benign	0.19
R0707:Dscam	UTSW	16	96825782	splice site	probably null
R0738:Dscam	UTSW	16	96819781	missense	possibly damaging	0.48
R1017:Dscam	UTSW	16	96833433	missense	probably damaging	1.00
R1377:Dscam	UTSW	16	96772494	missense	probably damaging	1.00
R1440:Dscam	UTSW	16	96819951	missense	probably damaging	1.00
R1442:Dscam	UTSW	16	96608074	missense	possibly damaging	0.94
R1464:Dscam	UTSW	16	96801253	missense	possibly damaging	0.94
R1464:Dscam	UTSW	16	96801253	missense	possibly damaging	0.94
R1478:Dscam	UTSW	16	96790910	missense	probably benign	0.15
R1530:Dscam	UTSW	16	96819874	missense	probably damaging	1.00
R1731:Dscam	UTSW	16	96819876	missense	probably damaging	1.00
R1765:Dscam	UTSW	16	96685379	missense	probably benign	0.00
R1824:Dscam	UTSW	16	96825581	missense	probably benign	0.00
R1933:Dscam	UTSW	16	96593214	missense	probably benign	0.00
R2005:Dscam	UTSW	16	97038920	missense	probably benign	0.02
R2006:Dscam	UTSW	16	96819912	missense	probably damaging	1.00
R2101:Dscam	UTSW	16	96610349	missense	probably benign	0.00
R2177:Dscam	UTSW	16	96610324	missense	probably damaging	0.98
R2342:Dscam	UTSW	16	96619502	missense	probably damaging	1.00
R2851:Dscam	UTSW	16	96622715	missense	possibly damaging	0.94
R2929:Dscam	UTSW	16	96685412	missense	possibly damaging	0.76
R3055:Dscam	UTSW	16	96801355	missense	probably damaging	1.00
R3157:Dscam	UTSW	16	96678510	missense	probably benign	0.16
R3159:Dscam	UTSW	16	96678510	missense	probably benign	0.16
R3944:Dscam	UTSW	16	96820997	missense	probably damaging	0.99
R4080:Dscam	UTSW	16	96683772	missense	probably benign	0.01
R4285:Dscam	UTSW	16	96709109	critical splice donor site	probably null
R4384:Dscam	UTSW	16	96709216	missense	probably damaging	0.99
R4460:Dscam	UTSW	16	96610319	missense	probably damaging	1.00
R4575:Dscam	UTSW	16	96825623	missense	possibly damaging	0.82
R4594:Dscam	UTSW	16	96717996	missense	possibly damaging	0.78
R4643:Dscam	UTSW	16	96685301	missense	probably damaging	0.96
R4698:Dscam	UTSW	16	96610324	missense	probably damaging	1.00
R4716:Dscam	UTSW	16	96619571	missense	possibly damaging	0.80
R4743:Dscam	UTSW	16	96830056	missense	probably benign	0.00
R4766:Dscam	UTSW	16	96643988	missense	probably benign	0.02
R4899:Dscam	UTSW	16	96683818	missense	probably benign	0.01
R4987:Dscam	UTSW	16	96697521	missense	probably benign	0.00
R4990:Dscam	UTSW	16	96825515	missense	probably benign	0.12
R5123:Dscam	UTSW	16	96772437	missense	probably damaging	1.00
R5130:Dscam	UTSW	16	96819779	missense	probably benign	0.00
R5328:Dscam	UTSW	16	96673678	missense	probably benign	0.33
R5666:Dscam	UTSW	16	96718164	missense	probably benign	0.23
R5670:Dscam	UTSW	16	96718164	missense	probably benign	0.23
R5678:Dscam	UTSW	16	96790900	missense	probably benign	0.16
R5827:Dscam	UTSW	16	96649991	critical splice donor site	probably null
R5907:Dscam	UTSW	16	96820920	missense	probably damaging	0.97
R6032:Dscam	UTSW	16	96649991	critical splice donor site	probably null
R6032:Dscam	UTSW	16	96649991	critical splice donor site	probably null
R6103:Dscam	UTSW	16	96825581	missense	probably benign
R6240:Dscam	UTSW	16	96619502	missense	probably damaging	1.00
R6257:Dscam	UTSW	16	96673714	missense	possibly damaging	0.94
R6361:Dscam	UTSW	16	96622811	missense	probably benign	0.08
R6405:Dscam	UTSW	16	96678425	missense	probably damaging	1.00
R6444:Dscam	UTSW	16	96619644	missense	probably damaging	1.00
R6560:Dscam	UTSW	16	96825735	missense	probably benign	0.00
R6598:Dscam	UTSW	16	96819784	missense	probably damaging	1.00
R6622:Dscam	UTSW	16	96645073	missense	probably benign	0.06
R6792:Dscam	UTSW	16	96593255	missense	probably damaging	0.96
R6792:Dscam	UTSW	16	96648237	missense	probably damaging	1.00
R6827:Dscam	UTSW	16	97038991	missense	probably damaging	1.00
R6868:Dscam	UTSW	16	96829940	missense	probably damaging	1.00
R6898:Dscam	UTSW	16	96829900	missense	probably benign	0.02
R6903:Dscam	UTSW	16	96820788	missense	probably damaging	1.00
R7051:Dscam	UTSW	16	96819786	missense	probably benign	0.01
R7146:Dscam	UTSW	16	96829917	nonsense	probably null
R7180:Dscam	UTSW	16	96825564	missense	probably damaging	0.97
R7209:Dscam	UTSW	16	96650344	splice site	probably null
R7247:Dscam	UTSW	16	96820808	missense	probably damaging	0.99
R7269:Dscam	UTSW	16	96678401	missense	probably benign	0.00
R7301:Dscam	UTSW	16	97056532	missense	probably benign	0.01
R7328:Dscam	UTSW	16	96645035	nonsense	probably null
R7368:Dscam	UTSW	16	96643931	missense	probably benign	0.00
R7425:Dscam	UTSW	16	96629398	missense	probably damaging	1.00
R7474:Dscam	UTSW	16	96819889	missense	possibly damaging	0.88
R7536:Dscam	UTSW	16	96641026	splice site	probably null
R7624:Dscam	UTSW	16	96610324	missense	probably damaging	1.00
R7766:Dscam	UTSW	16	96790901	missense	probably benign	0.31
R7817:Dscam	UTSW	16	96640864	missense	probably benign
R7843:Dscam	UTSW	16	96825630	missense	probably damaging	0.99
R7911:Dscam	UTSW	16	96643922	missense	probably benign	0.01
R8108:Dscam	UTSW	16	96643879	missense	probably benign	0.01
R8128:Dscam	UTSW	16	96801174	splice site	probably null
R8770:Dscam	UTSW	16	96654906	missense	possibly damaging	0.50
R8876:Dscam	UTSW	16	96619628	missense	probably damaging	0.96
R9005:Dscam	UTSW	16	96801380	missense	probably damaging	1.00
R9009:Dscam	UTSW	16	97038916	missense	probably benign	0.10
R9168:Dscam	UTSW	16	96619568	missense	possibly damaging	0.82
R9176:Dscam	UTSW	16	96685353	missense	probably benign	0.37
R9244:Dscam	UTSW	16	96685229	missense	possibly damaging	0.62
R9339:Dscam	UTSW	16	96716063	missense	possibly damaging	0.89
R9374:Dscam	UTSW	16	97056657	missense	probably benign	0.19
R9385:Dscam	UTSW	16	97039003	missense	probably benign
R9674:Dscam	UTSW	16	96640836	missense	probably benign	0.03
X0025:Dscam	UTSW	16	96709161	missense	probably damaging	1.00
Z1088:Dscam	UTSW	16	96772561	missense	probably benign	0.01
Z1177:Dscam	UTSW	16	96608189	missense	probably damaging	0.98

Protein Function and Prediction

Dscam is a neural cell adhesion immunoglobulin (1). Yamakawa et al. propose that Dscam functions in neural differentiation (1). Further studies determined that Dscam is required for axon pathway formation in the embryonic central nervous system (2).

Expression/Localization

In humans, DSCAM produces three transcripts that expressed primarily in the brain (1). In the mouse, Dscam is expressed in the nervous system and during neuronal differentiation it is in the neural tube, cortex, hippocampus, medulla, spinal cord and most neural crest-derived tissues (1).

Background

Dscam^2J/2J; MGI:4830358

C3H/HeDiSn-Dscam^2J/GrsrJ

Homozygotes have impaired balance and swimming, abnormal posture and resting posture, and trunk curl (3).

Dscam^2J/2J; MGI:4830358

C3Sn.Cg-Pde6b⁺ Dscam^2J/Rwb

Homozygoes have abnormal amacrine cell morphology (3).

Dscam^{tm1.1Kzy/tm1.1Kzy}; MGI:3840666

B6.129P2-Dscam^tm1.1Kzy

Most mice die within 24 hours of birth unlike mice on a mixed 129P2/OlaHsd, BALB/c, and C57BL/6 background that survive into adulthood and have decreased pulmonary respiratory rate and apnea (4).

Dscam^{tm1.1Kzy/tm1.1Kzy}; MGI:3840666

involves: 129P2/OlaHsd * BALB/c * C57BL/6

Mice survive until adulthood unlike mice on a congenic C57BL/6 background that die shortly after birth (4). Mice exhibit irregular breathing patterns that are milder than in mice on a congenic C57BL/6 background (4).

Dscam^{tm1.1Pfu/tm1.1Pfu}; MGI:5305025

involves: 129S1/Sv * 129X1/SvJ * C57BL/6

Homozygotes have abnormal axon fasciculation of retinal dopaminergic and pNOS-positive amacrine cell neurites (5).

Dscam^del17/del17; MGI:3761008

B6.CBy-Dscam^del17/RwbJ

Homozygotes die shortly after birth but can survive when outcrossed to BALB or 129 strains (3). Homozygotes exhibit abnormal retina morphology (6).

Dscam^del17/del17; MGI:3761008

either: (involves BALB/cByJ * C57BL/6J) or (involves: 129S1/SvImJ * BALB/cByJ *

Offspring from heterozygous intercrosses produce only 10.5% affected homozygotes, detected at 2 days of age from kyphosis and vestibular phenotype, and only 5.7% survive to wean age (3).

Dscam^del17/del17; MGI:3761008

involves: BALB/cByJ * C57BL/6J

Homozygotes exhibit a lifespan greater than 24 months but have abnormal amacrine cell morphology, disorganized retinal ganglion cells and inner plexiform layer, impaired coordination, and seizures (7).

References

1. Yamakawa, K., Huot, Y. K., Haendelt, M. A., Hubert, R., Chen, X. N., Lyons, G. E., and Korenberg, J. R. (1998) DSCAM: A Novel Member of the Immunoglobulin Superfamily Maps in a Down Syndrome Region and is Involved in the Development of the Nervous System. Hum Mol Genet. 7, 227-237.

2. Schmucker, D., Clemens, J. C., Shu, H., Worby, C. A., Xiao, J., Muda, M., Dixon, J. E., and Zipursky, S. L. (2000) Drosophila Dscam is an Axon Guidance Receptor Exhibiting Extraordinary Molecular Diversity. Cell. 101, 671-684.

3. Fuerst, P. G., Harris, B. S., Johnson, K. R., and Burgess, R. W. (2010) A Novel Null Allele of Mouse DSCAM Survives to Adulthood on an Inbred C3H Background with Reduced Phenotypic Variability. Genesis. 48, 578-584.

4. Amano, K., Fujii, M., Arata, S., Tojima, T., Ogawa, M., Morita, N., Shimohata, A., Furuichi, T., Itohara, S., Kamiguchi, H., Korenberg, J. R., Arata, A., and Yamakawa, K. (2009) DSCAM Deficiency Causes Loss of Pre-Inspiratory Neuron Synchroneity and Perinatal Death. J Neurosci. 29, 2984-2996.

5. Fuerst, P. G., Bruce, F., Rounds, R. P., Erskine, L., and Burgess, R. W. (2012) Cell Autonomy of DSCAM Function in Retinal Development. Dev Biol. 361, 326-337.

6. Fuerst, P. G., Bruce, F., Tian, M., Wei, W., Elstrott, J., Feller, M. B., Erskine, L., Singer, J. H., and Burgess, R. W. (2009) DSCAM and DSCAML1 Function in Self-Avoidance in Multiple Cell Types in the Developing Mouse Retina. Neuron. 64, 484-497.

7. Fuerst, P. G., Koizumi, A., Masland, R. H., and Burgess, R. W. (2008) Neurite Arborization and Mosaic Spacing in the Mouse Retina Require DSCAM. Nature. 451, 470-474.

Posted On

2012-12-12

Science Writer

Anne Murray