Incidental Mutation 'R0058:Sptan1'
ID18416
Institutional Source Beutler Lab
Gene Symbol Sptan1
Ensembl Gene ENSMUSG00000057738
Gene Namespectrin alpha, non-erythrocytic 1
Synonymsalpha-fodrin, Spna2, 2610027H02Rik, Spna-2
MMRRC Submission 038352-MU
Accession Numbers

Ncbi RefSeq: NM_001076554.2, NM_001177667.1, NM_001177668.1; MGI:98386

Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R0058 (G1)
Quality Score
Status Validated
Chromosome2
Chromosomal Location29965560-30031451 bp(+) (GRCm38)
Type of Mutationsplice site (6 bp from exon)
DNA Base Change (assembly) T to C at 29993696 bp
ZygosityHeterozygous
Amino Acid Change
Ref Sequence ENSEMBL: ENSMUSP00000121116 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000046257] [ENSMUST00000095083] [ENSMUST00000100225] [ENSMUST00000113717] [ENSMUST00000113719] [ENSMUST00000129241]
Predicted Effect probably null
Transcript: ENSMUST00000046257
SMART Domains Protein: ENSMUSP00000047792
Gene: ENSMUSG00000057738

DomainStartEndE-ValueType
SPEC 47 146 2.1e-30 SMART
SPEC 152 252 2.6e-35 SMART
SPEC 258 358 4.93e-36 SMART
SPEC 364 464 1.08e-27 SMART
SPEC 470 570 9.01e-30 SMART
SPEC 576 675 3.52e-32 SMART
SPEC 681 781 2.15e-36 SMART
SPEC 787 887 2.45e-40 SMART
SPEC 893 1068 1.18e-24 SMART
SH3 970 1025 8.24e-18 SMART
SPEC 1074 1210 6.52e-27 SMART
SPEC 1216 1316 1.44e-37 SMART
SPEC 1322 1422 4.43e-29 SMART
SPEC 1428 1528 7.54e-32 SMART
SPEC 1534 1635 9.65e-30 SMART
SPEC 1641 1741 2.32e-32 SMART
SPEC 1747 1847 6.98e-36 SMART
SPEC 1853 1953 1.53e-32 SMART
SPEC 1959 2060 6.23e-24 SMART
SPEC 2074 2174 2.08e-11 SMART
SPEC 2188 2289 1.07e-4 SMART
EFh 2307 2335 5.78e-7 SMART
EFh 2350 2378 3.85e-3 SMART
efhand_Ca_insen 2382 2451 6.74e-32 SMART
Predicted Effect probably null
Transcript: ENSMUST00000095083
SMART Domains Protein: ENSMUSP00000092697
Gene: ENSMUSG00000057738

DomainStartEndE-ValueType
SPEC 47 146 2.1e-30 SMART
SPEC 152 252 2.6e-35 SMART
SPEC 258 358 4.93e-36 SMART
SPEC 364 464 1.08e-27 SMART
SPEC 470 570 9.01e-30 SMART
SPEC 576 675 3.52e-32 SMART
SPEC 681 781 2.15e-36 SMART
SPEC 787 887 2.45e-40 SMART
SPEC 893 1088 1.56e-24 SMART
SH3 970 1025 8.24e-18 SMART
SPEC 1094 1230 6.52e-27 SMART
SPEC 1236 1336 1.44e-37 SMART
SPEC 1342 1442 4.43e-29 SMART
SPEC 1448 1548 7.54e-32 SMART
SPEC 1554 1655 9.65e-30 SMART
SPEC 1661 1761 2.32e-32 SMART
SPEC 1767 1867 6.98e-36 SMART
SPEC 1873 1973 1.53e-32 SMART
SPEC 1979 2080 6.23e-24 SMART
SPEC 2094 2194 2.08e-11 SMART
SPEC 2208 2309 1.07e-4 SMART
EFh 2327 2355 5.78e-7 SMART
EFh 2370 2398 3.85e-3 SMART
efhand_Ca_insen 2402 2471 6.74e-32 SMART
Predicted Effect probably null
Transcript: ENSMUST00000100225
SMART Domains Protein: ENSMUSP00000097797
Gene: ENSMUSG00000057738

DomainStartEndE-ValueType
SPEC 47 146 2.1e-30 SMART
SPEC 152 252 2.6e-35 SMART
SPEC 258 358 4.93e-36 SMART
SPEC 364 464 1.08e-27 SMART
SPEC 470 570 9.01e-30 SMART
SPEC 576 675 3.52e-32 SMART
SPEC 681 781 2.15e-36 SMART
SPEC 787 887 2.45e-40 SMART
SPEC 893 1088 1.56e-24 SMART
SH3 970 1025 8.24e-18 SMART
SPEC 1094 1230 6.52e-27 SMART
SPEC 1236 1336 1.44e-37 SMART
SPEC 1342 1442 4.43e-29 SMART
SPEC 1448 1548 7.54e-32 SMART
SPEC 1554 1660 2.06e-24 SMART
SPEC 1666 1766 2.32e-32 SMART
SPEC 1772 1872 6.98e-36 SMART
SPEC 1878 1978 1.53e-32 SMART
SPEC 1984 2085 6.23e-24 SMART
SPEC 2099 2199 2.08e-11 SMART
SPEC 2213 2314 1.07e-4 SMART
EFh 2332 2360 5.78e-7 SMART
EFh 2375 2403 3.85e-3 SMART
efhand_Ca_insen 2407 2476 6.74e-32 SMART
Predicted Effect probably null
Transcript: ENSMUST00000113717
SMART Domains Protein: ENSMUSP00000109346
Gene: ENSMUSG00000057738

DomainStartEndE-ValueType
SPEC 47 146 2.1e-30 SMART
SPEC 152 252 2.6e-35 SMART
SPEC 258 358 4.93e-36 SMART
SPEC 364 464 1.08e-27 SMART
SPEC 470 570 9.01e-30 SMART
SPEC 576 675 3.52e-32 SMART
SPEC 681 781 2.15e-36 SMART
SPEC 787 887 2.45e-40 SMART
SPEC 893 1068 1.18e-24 SMART
SH3 970 1025 8.24e-18 SMART
SPEC 1074 1210 6.52e-27 SMART
SPEC 1216 1316 1.44e-37 SMART
SPEC 1322 1422 4.43e-29 SMART
SPEC 1428 1528 7.54e-32 SMART
SPEC 1534 1640 2.06e-24 SMART
SPEC 1646 1746 2.32e-32 SMART
SPEC 1752 1852 6.98e-36 SMART
SPEC 1858 1958 1.53e-32 SMART
SPEC 1964 2065 6.23e-24 SMART
SPEC 2079 2179 2.08e-11 SMART
SPEC 2193 2294 1.07e-4 SMART
EFh 2312 2340 5.78e-7 SMART
EFh 2355 2383 3.85e-3 SMART
efhand_Ca_insen 2387 2456 6.74e-32 SMART
Predicted Effect probably null
Transcript: ENSMUST00000113719
SMART Domains Protein: ENSMUSP00000109348
Gene: ENSMUSG00000057738

DomainStartEndE-ValueType
SPEC 47 146 2.1e-30 SMART
SPEC 152 252 2.6e-35 SMART
SPEC 258 358 4.93e-36 SMART
SPEC 364 464 1.08e-27 SMART
SPEC 470 570 9.01e-30 SMART
SPEC 576 675 3.52e-32 SMART
SPEC 681 781 2.15e-36 SMART
SPEC 787 887 2.45e-40 SMART
SPEC 893 1068 1.18e-24 SMART
SH3 970 1025 8.24e-18 SMART
SPEC 1074 1210 6.52e-27 SMART
SPEC 1216 1316 1.44e-37 SMART
SPEC 1322 1422 4.43e-29 SMART
SPEC 1428 1528 7.54e-32 SMART
SPEC 1534 1640 2.06e-24 SMART
SPEC 1646 1746 2.32e-32 SMART
SPEC 1752 1852 6.98e-36 SMART
SPEC 1858 1958 1.53e-32 SMART
SPEC 1964 2065 6.23e-24 SMART
SPEC 2079 2179 2.08e-11 SMART
SPEC 2193 2315 3.27e0 SMART
EFh 2333 2361 5.78e-7 SMART
EFh 2376 2404 3.85e-3 SMART
efhand_Ca_insen 2408 2477 6.74e-32 SMART
Predicted Effect probably null
Transcript: ENSMUST00000129241
SMART Domains Protein: ENSMUSP00000121116
Gene: ENSMUSG00000057738

DomainStartEndE-ValueType
Pfam:Spectrin 1 65 9.9e-10 PFAM
SPEC 78 178 2.08e-11 SMART
SPEC 192 314 3.27e0 SMART
EFh 332 360 5.78e-7 SMART
EFh 375 403 3.85e-3 SMART
efhand_Ca_insen 407 476 6.74e-32 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000131827
Predicted Effect noncoding transcript
Transcript: ENSMUST00000143918
Predicted Effect noncoding transcript
Transcript: ENSMUST00000184313
Meta Mutation Damage Score 0.6288 question?
Coding Region Coverage
  • 1x: 87.4%
  • 3x: 82.9%
  • 10x: 66.9%
  • 20x: 41.4%
Validation Efficiency 85% (62/73)
MGI Phenotype Strain: 3714925; 4330132
Lethality: E12-E17
FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Spectrins are a family of filamentous cytoskeletal proteins that function as essential scaffold proteins that stabilize the plasma membrane and organize intracellular organelles. Spectrins are composed of alpha and beta dimers that associate to form tetramers linked in a head-to-head arrangement. This gene encodes an alpha spectrin that is specifically expressed in nonerythrocytic cells. The encoded protein has been implicated in other cellular functions including DNA repair and cell cycle regulation. Mutations in this gene are the cause of early infantile epileptic encephalopathy-5. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Sep 2010]
PHENOTYPE: Homozygous deletion of the exons encoding the CCC region are normal. Mice homozygous for a gene trap allele exhibit embryonic lethality and abnormal nervous system, heart and craniofacial morphology. [provided by MGI curators]
Allele List at MGI

All alleles(76) : Targeted(1) Gene trapped(75)

Other mutations in this stock
Total: 44 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adgrv1 A G 13: 81,182,672 V6088A possibly damaging Het
Ankrd36 A G 11: 5,630,691 probably benign Het
Anxa1 A T 19: 20,383,777 Y84N probably damaging Het
Arnt2 G A 7: 84,347,530 R63C probably damaging Het
Avpr1b A G 1: 131,599,786 T16A probably benign Het
Cables1 A G 18: 11,923,413 E316G possibly damaging Het
Cadm1 A T 9: 47,850,331 I427L probably damaging Het
Dazap1 T C 10: 80,261,581 probably benign Het
Dip2b A G 15: 100,215,240 E1512G probably benign Het
Dock1 G A 7: 135,108,761 V1171M possibly damaging Het
Dock5 A T 14: 67,781,036 F1230Y probably benign Het
Dst T C 1: 34,006,224 S13P possibly damaging Het
Dym G A 18: 75,043,172 E15K possibly damaging Het
Faf1 A G 4: 109,736,624 Q133R probably benign Het
Fcer2a T C 8: 3,688,111 probably benign Het
Fmo2 A T 1: 162,886,324 S204R probably benign Het
Ghitm A G 14: 37,131,592 L97P probably damaging Het
Gins4 A G 8: 23,229,510 probably benign Het
Gm10573 G A 4: 121,920,736 Het
Golga3 T A 5: 110,202,777 F766Y possibly damaging Het
Hapln1 T C 13: 89,607,878 I267T probably benign Het
Helz A T 11: 107,672,558 probably benign Het
Igll1 A T 16: 16,863,876 V5E probably benign Het
Kif16b A G 2: 142,857,305 probably null Het
Limk1 A T 5: 134,659,871 W507R probably damaging Het
Marf1 C T 16: 14,142,534 A549T probably damaging Het
Mtif3 C A 5: 146,956,921 V159F probably benign Het
Ncoa7 T A 10: 30,647,541 D887V probably damaging Het
Pkd1 G C 17: 24,564,703 A162P probably benign Het
Plce1 A G 19: 38,525,184 D309G possibly damaging Het
Plk4 T C 3: 40,805,872 V401A probably benign Het
Prrc2c C T 1: 162,698,884 V253I unknown Het
Ranbp2 T A 10: 58,480,531 S2358T probably damaging Het
Setd2 T A 9: 110,594,426 V2183E probably damaging Het
Sgsm1 T A 5: 113,285,087 S232C probably damaging Het
Skint6 A T 4: 113,046,815 probably benign Het
Slc15a2 A G 16: 36,754,547 I531T probably benign Het
Slc36a1 C T 11: 55,221,994 probably benign Het
Tex15 C T 8: 33,581,502 probably benign Het
Tlr9 T G 9: 106,224,965 L485R possibly damaging Het
Tmem207 A G 16: 26,524,829 probably benign Het
Triml2 T C 8: 43,185,269 probably benign Het
Tspear T C 10: 77,869,631 F288L probably benign Het
Zfp644 A T 5: 106,637,003 S559R possibly damaging Het
Other mutations in Sptan1
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00668:Sptan1 APN 2 29993956 critical splice donor site probably null
IGL00932:Sptan1 APN 2 30015610 missense probably damaging 1.00
IGL00945:Sptan1 APN 2 30000071 splice site probably benign
IGL01070:Sptan1 APN 2 30014173 critical splice donor site probably null
IGL01625:Sptan1 APN 2 30026114 missense probably damaging 1.00
IGL01657:Sptan1 APN 2 30018479 missense probably benign 0.12
IGL01795:Sptan1 APN 2 30018489 missense probably benign 0.07
IGL01982:Sptan1 APN 2 30019968 missense probably damaging 1.00
IGL02040:Sptan1 APN 2 30013713 missense probably benign 0.43
IGL02158:Sptan1 APN 2 30030324 missense probably damaging 0.97
IGL02370:Sptan1 APN 2 30030740 missense probably damaging 0.99
IGL02507:Sptan1 APN 2 30016055 missense probably damaging 1.00
IGL02552:Sptan1 APN 2 30018474 missense probably damaging 0.99
IGL02690:Sptan1 APN 2 29998183 missense possibly damaging 0.78
IGL02715:Sptan1 APN 2 29978576 missense probably benign 0.03
IGL02725:Sptan1 APN 2 29996043 missense probably damaging 0.99
IGL03033:Sptan1 APN 2 29991033 missense probably damaging 1.00
IGL03304:Sptan1 APN 2 29986493 missense probably damaging 1.00
IGL03405:Sptan1 APN 2 30025581 missense probably damaging 0.99
R0058:Sptan1 UTSW 2 29993696 splice site probably null
R0066:Sptan1 UTSW 2 30003667 splice site probably benign
R0066:Sptan1 UTSW 2 30003667 splice site probably benign
R0071:Sptan1 UTSW 2 30003342 nonsense probably null
R0071:Sptan1 UTSW 2 30003342 nonsense probably null
R0094:Sptan1 UTSW 2 30006623 missense probably benign 0.37
R0230:Sptan1 UTSW 2 30010692 splice site probably benign
R0242:Sptan1 UTSW 2 30018401 missense probably benign 0.00
R0242:Sptan1 UTSW 2 30018401 missense probably benign 0.00
R0366:Sptan1 UTSW 2 29992752 splice site probably null
R0368:Sptan1 UTSW 2 29993915 missense probably benign 0.29
R0396:Sptan1 UTSW 2 29991033 missense probably damaging 1.00
R0423:Sptan1 UTSW 2 30028672 missense probably null
R0448:Sptan1 UTSW 2 30026810 missense probably damaging 1.00
R0485:Sptan1 UTSW 2 30013848 splice site probably benign
R0580:Sptan1 UTSW 2 30007575 missense probably damaging 0.99
R0739:Sptan1 UTSW 2 30013518 missense probably damaging 1.00
R0924:Sptan1 UTSW 2 30016028 missense probably damaging 0.98
R0930:Sptan1 UTSW 2 30016028 missense probably damaging 0.98
R0961:Sptan1 UTSW 2 29980063 splice site probably null
R1352:Sptan1 UTSW 2 30021187 splice site probably benign
R1456:Sptan1 UTSW 2 29980203 critical splice donor site probably null
R1537:Sptan1 UTSW 2 30026022 missense possibly damaging 0.95
R1542:Sptan1 UTSW 2 30027127 missense probably damaging 1.00
R1612:Sptan1 UTSW 2 30003336 missense probably damaging 1.00
R1623:Sptan1 UTSW 2 29986420 missense probably damaging 0.96
R1834:Sptan1 UTSW 2 29992001 splice site probably benign
R1879:Sptan1 UTSW 2 29995528 missense probably damaging 1.00
R1893:Sptan1 UTSW 2 30020460 missense probably damaging 0.98
R1914:Sptan1 UTSW 2 30011036 missense probably benign 0.00
R1915:Sptan1 UTSW 2 30011036 missense probably benign 0.00
R2022:Sptan1 UTSW 2 30007561 missense probably damaging 0.96
R2050:Sptan1 UTSW 2 30002238 missense probably benign
R2103:Sptan1 UTSW 2 30030471 missense probably damaging 1.00
R2162:Sptan1 UTSW 2 30018576 splice site probably benign
R2931:Sptan1 UTSW 2 30018488 missense probably benign
R3726:Sptan1 UTSW 2 30018419 missense possibly damaging 0.59
R4170:Sptan1 UTSW 2 30030025 missense possibly damaging 0.93
R4235:Sptan1 UTSW 2 30026588 missense probably damaging 1.00
R4378:Sptan1 UTSW 2 30025569 missense probably damaging 1.00
R4424:Sptan1 UTSW 2 30029709 intron probably benign
R4718:Sptan1 UTSW 2 30031062 missense probably damaging 1.00
R4777:Sptan1 UTSW 2 29996435 missense probably damaging 0.98
R4849:Sptan1 UTSW 2 30011042 missense probably damaging 1.00
R5158:Sptan1 UTSW 2 29978443 missense probably damaging 1.00
R5180:Sptan1 UTSW 2 29993724 intron probably benign
R5181:Sptan1 UTSW 2 29993724 intron probably benign
R5383:Sptan1 UTSW 2 30011328 missense probably damaging 1.00
R5573:Sptan1 UTSW 2 29986492 nonsense probably null
R5592:Sptan1 UTSW 2 29986719 intron probably benign
R5639:Sptan1 UTSW 2 29990993 nonsense probably null
R5801:Sptan1 UTSW 2 30030601 splice site probably null
R5947:Sptan1 UTSW 2 29994367 critical splice donor site probably null
R6056:Sptan1 UTSW 2 29996782 missense probably benign 0.36
R6090:Sptan1 UTSW 2 29993887 missense probably damaging 1.00
R6146:Sptan1 UTSW 2 30004523 missense probably benign 0.01
R6254:Sptan1 UTSW 2 30007549 missense possibly damaging 0.93
R6366:Sptan1 UTSW 2 30020455 missense possibly damaging 0.47
R6378:Sptan1 UTSW 2 30018515 missense probably damaging 1.00
R6521:Sptan1 UTSW 2 30020455 missense possibly damaging 0.47
R6877:Sptan1 UTSW 2 30030973 missense probably damaging 0.99
X0028:Sptan1 UTSW 2 30020030 missense probably damaging 1.00
Protein Function and Prediction

Sptan1 encodes αII-spectrin (also named α-fodrin), a component of the cytoskeletal spectrin scaffold located under the lipid bilayer. Spectrins are long, flexible proteins composed of two subunits, α and β, that intertwine to form α/β heterodimers. Within the membrane skeleton, the α/β heterodimers self-associate to form (α/β)2 tetramers (1;2). The nodes of (α/β)2 tetramers are subsequently cross-linked by actin filaments (3). The spectrin subunits are composed of a succession of triple helical repeats. αII-spectrin is ubiquitously expressed and is the major α-spectrin expressed in nonerythroid cells (4). αII-spectrin is unique to erythroid αI-spectrin in that it has a region of 36 amino acids in the middle part of the protein near an SH3 domain that has protease cleavage sites and a binding site for calmodulin (5). The αII/β heterodimer has been shown to have several functions including, but not limited to:  formation of specialized plasma membrane domains defining apical-basolateral and planar polarity in epithelial cells, muscle, and neurons (6); a scaffold upon which calcium-mediated and tyrosine kinase-phosphatases signal transduction pathways meet (7;8); a tumor suppressor that regulates TGF-β–SMAD (9); a cargo selection mechanism in the secretory and endocytic pathways (10); a tether that links trafficking vesicles to microtubules (11); and a nuclear scaffold organizer (12).

 

Mutations in SPTAN1 have been linked to early infantile epileptic encephalopathy [OMIM: 613477; (13;14)].

 

Sptan1tm1.1Gnic/tm1.1Gnic; MGI:3714925

either: (involves: 129/Sv) or (involves: 129/Sv * C57BL/6)

Homozygotes are phenotypically normal (4).

 

Sptan1Gt(RRQ171)Byg/ Gt(RRQ171)Byg; MGI: 4330132

B6.129P2-Sptan1Gt(RRQ171)Byg

Homozygotes exhibit partial embryonic lethality during organogenesis and complete lethality throughout fetal growth and development (between E12.5 and E16.5) (15). Homozygotes display abnormal nervous system, heart and craniofacial morphology (15).

 

Sptan1Gt(RRQ171)Byg/ Gt(RRQ171)Byg; MGI: 4330132

involves: 129P2/OlaHsd

In this genetic background, homozgyotes exhibit disrupted axon initial segment morphology (16).

References
Posted On2013-03-25
Science WriterAnne Murray