Incidental Mutation 'R0024:Dscam'
ID 15146
Institutional Source Beutler Lab
Gene Symbol Dscam
Ensembl Gene ENSMUSG00000050272
Gene Name DS cell adhesion molecule
Synonyms 4932410A21Rik, Down syndrome cell adhesion molecule
MMRRC Submission 038319-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R0024 (G1)
Quality Score
Status Validated
Chromosome 16
Chromosomal Location 96392040-96971952 bp(-) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) G to A at 96394585 bp (GRCm39)
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*

DomainStartEndE-ValueType
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 question?
Coding Region Coverage
  • 1x: 79.2%
  • 3x: 69.7%
  • 10x: 44.0%
  • 20x: 23.5%
Validation Efficiency 95% (75/79)
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: 40 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adgre5 T C 8: 84,454,913 (GRCm39) T260A probably damaging Het
Ahctf1 G A 1: 179,580,001 (GRCm39) T2067M probably damaging Het
Akip1 T C 7: 109,303,345 (GRCm39) S63P probably benign Het
Ankrd34c G A 9: 89,611,580 (GRCm39) P254S possibly damaging Het
Aqp8 T C 7: 123,066,663 (GRCm39) I256T probably benign Het
Arnt2 A G 7: 83,933,334 (GRCm39) V308A probably benign Het
Astn1 G A 1: 158,511,785 (GRCm39) S1209N probably damaging Het
Atf7ip T C 6: 136,576,818 (GRCm39) probably benign Het
Bbx T A 16: 50,045,281 (GRCm39) M427L probably benign Het
Cadm4 T C 7: 24,202,169 (GRCm39) L336P probably benign Het
Camk2d A G 3: 126,591,372 (GRCm39) M281V probably benign Het
Dennd2b T C 7: 109,123,866 (GRCm39) H1131R probably damaging Het
Dll3 A G 7: 27,999,586 (GRCm39) probably benign Het
Dst C T 1: 34,228,200 (GRCm39) P1606L probably damaging Het
Eif2ak3 A G 6: 70,869,340 (GRCm39) T676A probably benign Het
Entpd5 T C 12: 84,420,507 (GRCm39) M428T probably benign Het
Fry T G 5: 150,304,268 (GRCm39) S553A probably benign Het
Gls2 G A 10: 128,035,125 (GRCm39) R86H probably damaging Het
Gm14340 T A 2: 180,466,043 (GRCm39) noncoding transcript Het
Gm9457 A C 8: 4,863,131 (GRCm39) noncoding transcript Het
Hfm1 T C 5: 107,004,790 (GRCm39) K1179E probably benign Het
Iqgap1 T C 7: 80,401,687 (GRCm39) T473A probably benign Het
Krt34 A T 11: 99,931,863 (GRCm39) C119S probably benign Het
Krt6a A G 15: 101,599,150 (GRCm39) probably benign Het
Lysmd4 A G 7: 66,875,828 (GRCm39) T164A probably benign Het
Mroh2b T A 15: 4,955,109 (GRCm39) Y701N probably damaging Het
Pi4ka T C 16: 17,133,399 (GRCm39) probably benign Het
Plcb1 A G 2: 135,204,345 (GRCm39) S900G probably benign Het
Plxna2 T A 1: 194,326,303 (GRCm39) I79N possibly damaging Het
Prpf31 C A 7: 3,639,658 (GRCm39) probably null Het
Ptpro T A 6: 137,420,592 (GRCm39) V1007D probably damaging Het
Rsc1a1 T C 4: 141,412,583 (GRCm39) K110E probably benign Het
Sin3a T A 9: 57,025,537 (GRCm39) probably benign Het
Slc24a2 T C 4: 86,946,477 (GRCm39) probably benign Het
Slc6a3 A T 13: 73,688,956 (GRCm39) probably benign Het
Sugct G A 13: 17,032,454 (GRCm39) H433Y probably benign Het
Sycp2l A G 13: 41,295,264 (GRCm39) I310M probably damaging Het
Tpm3 C A 3: 89,994,756 (GRCm39) probably null Het
Ttc27 T C 17: 75,077,259 (GRCm39) F385L possibly damaging Het
Utrn A G 10: 12,281,755 (GRCm39) V3301A probably benign Het
Other mutations in Dscam
AlleleSourceChrCoordTypePredicted EffectPPH 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
F6893:Dscam UTSW 16 96,857,660 (GRCm39) missense possibly damaging 0.78
K3955:Dscam UTSW 16 96,474,887 (GRCm39) missense probably benign 0.00
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
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

Dscam2J/2J; MGI:4830358

C3H/HeDiSn-Dscam2J/GrsrJ

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

Dscam2J/2J; MGI:4830358

C3Sn.Cg-Pde6b+ Dscam2J/Rwb

Homozygoes have abnormal amacrine cell morphology (3).

Dscamtm1.1Kzy/tm1.1Kzy; MGI:3840666

B6.129P2-Dscamtm1.1Kzy

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).

Dscamtm1.1Kzy/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).

Dscamtm1.1Pfu/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).

Dscamdel17/del17; MGI:3761008

B6.CBy-Dscamdel17/RwbJ

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

Dscamdel17/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).

Dscamdel17/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
Posted On 2012-12-12
Science Writer Anne Murray