Incidental Mutation 'R0024:Dscam'
ID 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 16
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*

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 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
GeneRefVarChr/LocMutationPredicted EffectZygosity
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
AlleleSourceChrCoordTypePredicted EffectPPH 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

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