Incidental Mutation 'R8261:Sptb'
ID 639939
Institutional Source Beutler Lab
Gene Symbol Sptb
Ensembl Gene ENSMUSG00000021061
Gene Name spectrin beta, erythrocytic
Synonyms LOC383567, brain erythroid spectrin (235E), spectrin R, D330027P03Rik, Spnb-1, Spnb1
MMRRC Submission 067686-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.858) question?
Stock # R8261 (G1)
Quality Score 225.009
Status Validated
Chromosome 12
Chromosomal Location 76627262-76757321 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to A at 76668036 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Arginine to Leucine at position 687 (R687L)
Ref Sequence ENSEMBL: ENSMUSP00000021458 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000021458] [ENSMUST00000166101]
AlphaFold no structure available at present
Predicted Effect probably benign
Transcript: ENSMUST00000021458
AA Change: R687L

PolyPhen 2 Score 0.058 (Sensitivity: 0.94; Specificity: 0.84)
SMART Domains Protein: ENSMUSP00000021458
Gene: ENSMUSG00000021061
AA Change: R687L

DomainStartEndE-ValueType
CH 56 156 2.73e-26 SMART
CH 175 273 4.57e-28 SMART
SPEC 305 411 2.71e0 SMART
SPEC 425 525 4.65e-23 SMART
SPEC 531 634 4.51e-21 SMART
SPEC 640 740 3.02e-31 SMART
SPEC 746 845 1.47e-20 SMART
SPEC 851 951 1.04e-20 SMART
SPEC 957 1058 7.22e-20 SMART
SPEC 1064 1165 2.06e-24 SMART
SPEC 1171 1271 3.84e-15 SMART
SPEC 1277 1376 2.22e-20 SMART
SPEC 1382 1475 5.04e-10 SMART
SPEC 1481 1581 3.58e-24 SMART
SPEC 1587 1687 4.11e-24 SMART
SPEC 1693 1794 2.91e-24 SMART
SPEC 1800 1900 7.8e-16 SMART
SPEC 1906 2006 3.16e-25 SMART
SPEC 2012 2193 4.32e-9 SMART
PH 2180 2291 8.98e-16 SMART
Predicted Effect probably benign
Transcript: ENSMUST00000166101
AA Change: R687L

PolyPhen 2 Score 0.028 (Sensitivity: 0.95; Specificity: 0.81)
SMART Domains Protein: ENSMUSP00000129782
Gene: ENSMUSG00000021061
AA Change: R687L

DomainStartEndE-ValueType
CH 56 156 2.73e-26 SMART
CH 175 273 4.57e-28 SMART
SPEC 305 411 2.71e0 SMART
SPEC 425 525 4.65e-23 SMART
SPEC 531 634 4.51e-21 SMART
SPEC 640 740 3.02e-31 SMART
SPEC 746 845 1.47e-20 SMART
SPEC 851 951 1.04e-20 SMART
SPEC 957 1058 7.22e-20 SMART
SPEC 1064 1165 2.06e-24 SMART
SPEC 1171 1271 3.84e-15 SMART
SPEC 1277 1376 2.22e-20 SMART
SPEC 1382 1475 5.87e-11 SMART
SPEC 1481 1581 3.58e-24 SMART
SPEC 1587 1687 4.11e-24 SMART
SPEC 1693 1794 2.91e-24 SMART
SPEC 1800 1900 7.8e-16 SMART
SPEC 1906 2006 3.16e-25 SMART
SPEC 2012 2117 1.16e-9 SMART
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 100.0%
  • 10x: 99.8%
  • 20x: 99.3%
Validation Efficiency 100% (76/76)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This locus encodes a member of the spectrin gene family. Spectrin proteins, along with ankyrin, play a role in cell membrane organization and stability. The protein encoded by this locus functions in stability of erythrocyte membranes, and mutations in this gene have been associated with spherocytosis type 2, hereditary elliptocytosis, and neonatal hemolytic anemia. Alternatively spliced transcript variants have been described. [provided by RefSeq, Nov 2009]
PHENOTYPE: Homozygotes for a spontaneous mutation exhibit a severe microcytic anemia with erythrocyte fragility, hepatomegaly, and jaundice. Mutants die within a few days of birth. Heterozygotes are mildly anemic. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 77 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
4933412E24Rik T C 15: 59,888,425 (GRCm39) E5G probably benign Het
Adam23 T C 1: 63,567,957 (GRCm39) V202A noncoding transcript Het
Adamtsl1 A C 4: 86,195,120 (GRCm39) E512D probably damaging Het
Ahnak A T 19: 8,982,817 (GRCm39) D1367V probably damaging Het
Angpt4 A T 2: 151,769,084 (GRCm39) Q198L probably benign Het
Apcdd1 T A 18: 63,066,974 (GRCm39) H29Q possibly damaging Het
Cdh16 T A 8: 105,341,811 (GRCm39) K755* probably null Het
Cdk6 T G 5: 3,440,685 (GRCm39) F80V probably benign Het
Chd1 T C 17: 17,607,804 (GRCm39) S451P probably benign Het
Chd6 A G 2: 160,799,002 (GRCm39) L2361P probably damaging Het
Chst8 A G 7: 34,447,579 (GRCm39) M13T possibly damaging Het
Cntnap2 T C 6: 47,072,627 (GRCm39) L1065P probably damaging Het
Dctn4 T C 18: 60,659,343 (GRCm39) V14A possibly damaging Het
Dicer1 A T 12: 104,657,865 (GRCm39) V1903D probably damaging Het
E2f2 A G 4: 135,911,791 (GRCm39) silent Het
Eif4g3 T A 4: 137,898,429 (GRCm39) S902T possibly damaging Het
Emid1 G T 11: 5,084,353 (GRCm39) A152D probably benign Het
Fer1l6 T A 15: 58,432,345 (GRCm39) N297K possibly damaging Het
Fes T C 7: 80,032,902 (GRCm39) D281G probably null Het
Frmpd2 T C 14: 33,224,934 (GRCm39) V133A probably benign Het
Fry A G 5: 150,369,372 (GRCm39) Y2282C probably damaging Het
Gm10377 C T 14: 42,616,664 (GRCm39) probably null Het
Gm1527 A G 3: 28,974,749 (GRCm39) T521A probably damaging Het
Gpr141 T A 13: 19,936,013 (GRCm39) H254L probably benign Het
Gpr160 A G 3: 30,950,096 (GRCm39) E56G probably benign Het
Grid2ip T G 5: 143,367,695 (GRCm39) probably null Het
Grin2a A G 16: 9,481,382 (GRCm39) F473S probably damaging Het
Igkv1-131 T C 6: 67,743,102 (GRCm39) T94A probably damaging Het
Inava T A 1: 136,153,215 (GRCm39) N226Y probably damaging Het
Iqgap2 A G 13: 95,772,078 (GRCm39) L1367P probably damaging Het
Kdm5d T A Y: 936,929 (GRCm39) M856K probably damaging Het
Kirrel1 T C 3: 86,995,309 (GRCm39) probably benign Het
Lad1 T C 1: 135,755,500 (GRCm39) S259P probably damaging Het
Lalba A T 15: 98,379,992 (GRCm39) F86Y possibly damaging Het
Lrfn5 G A 12: 61,886,323 (GRCm39) C37Y probably damaging Het
Man2c1 A G 9: 57,046,942 (GRCm39) T665A probably benign Het
Ms4a20 T A 19: 11,087,707 (GRCm39) S75C probably damaging Het
Myh11 T C 16: 14,041,867 (GRCm39) I719V Het
Nbl1 A T 4: 138,812,832 (GRCm39) C34S probably damaging Het
Ncapg T A 5: 45,844,730 (GRCm39) I575N possibly damaging Het
Nlgn1 T C 3: 25,487,816 (GRCm39) T840A possibly damaging Het
Nrdc T C 4: 108,873,876 (GRCm39) S231P possibly damaging Het
Nrg2 T C 18: 36,165,428 (GRCm39) K395E probably benign Het
Nrip1 A T 16: 76,088,949 (GRCm39) N869K possibly damaging Het
Or2a14 T A 6: 43,130,242 (GRCm39) M1K probably null Het
Or4c12 A G 2: 89,773,716 (GRCm39) F248L probably benign Het
Or8s16 A T 15: 98,210,546 (GRCm39) M295K probably benign Het
Otub2 G T 12: 103,369,161 (GRCm39) probably null Het
Paxbp1 T C 16: 90,834,303 (GRCm39) D161G probably benign Het
Pcnx3 C T 19: 5,715,412 (GRCm39) G1946E probably damaging Het
Per2 T A 1: 91,361,170 (GRCm39) Q495L possibly damaging Het
Plxna2 T A 1: 194,431,724 (GRCm39) V571E probably damaging Het
Prr7 C A 13: 55,620,735 (GRCm39) P248T possibly damaging Het
Ptprr A T 10: 116,073,169 (GRCm39) T464S possibly damaging Het
Rapgef2 A G 3: 78,993,325 (GRCm39) V721A probably benign Het
Rfx1 A T 8: 84,819,479 (GRCm39) Y625F probably benign Het
Rps6kb2 G T 19: 4,211,195 (GRCm39) A110D possibly damaging Het
Setdb2 A T 14: 59,651,141 (GRCm39) probably benign Het
Slc25a31 T C 3: 40,679,351 (GRCm39) I272T probably damaging Het
Smpd1 T C 7: 105,204,520 (GRCm39) V133A probably benign Het
Sorl1 T C 9: 41,925,777 (GRCm39) D1185G probably damaging Het
Spag6 T A 2: 18,750,301 (GRCm39) L449H probably benign Het
Sptbn5 A T 2: 119,877,616 (GRCm39) V1012E noncoding transcript Het
Tmem192 A G 8: 65,416,972 (GRCm39) I188V probably benign Het
Tmem253 G A 14: 52,256,708 (GRCm39) V194M probably benign Het
Tph1 A G 7: 46,303,173 (GRCm39) silent Het
Trak1 A G 9: 121,280,733 (GRCm39) E374G probably damaging Het
Trpv1 A T 11: 73,145,593 (GRCm39) probably null Het
Trub2 T C 2: 29,667,725 (GRCm39) H305R probably benign Het
Ttn A G 2: 76,747,768 (GRCm39) V4427A probably benign Het
Vasn A G 16: 4,466,160 (GRCm39) T36A probably damaging Het
Vmn1r8 A T 6: 57,013,158 (GRCm39) I70F probably benign Het
Vps13c A T 9: 67,862,262 (GRCm39) I2960L probably damaging Het
Zdhhc4 C A 5: 143,307,588 (GRCm39) M144I probably benign Het
Zfp273 T A 13: 67,974,070 (GRCm39) N399K probably benign Het
Zfp976 T A 7: 42,262,125 (GRCm39) T572S unknown Het
Zmym4 A G 4: 126,798,360 (GRCm39) C756R probably damaging Het
Other mutations in Sptb
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00159:Sptb APN 12 76,668,105 (GRCm39) missense probably benign 0.00
IGL00160:Sptb APN 12 76,669,943 (GRCm39) missense probably damaging 1.00
IGL00229:Sptb APN 12 76,667,527 (GRCm39) missense probably benign 0.20
IGL00820:Sptb APN 12 76,679,251 (GRCm39) missense probably damaging 1.00
IGL01309:Sptb APN 12 76,634,237 (GRCm39) missense probably benign 0.16
IGL01408:Sptb APN 12 76,659,921 (GRCm39) missense possibly damaging 0.93
IGL01450:Sptb APN 12 76,671,014 (GRCm39) missense possibly damaging 0.89
IGL01455:Sptb APN 12 76,659,686 (GRCm39) missense probably damaging 1.00
IGL01457:Sptb APN 12 76,659,329 (GRCm39) splice site probably benign
IGL01680:Sptb APN 12 76,677,456 (GRCm39) missense probably damaging 1.00
IGL02070:Sptb APN 12 76,652,313 (GRCm39) missense possibly damaging 0.82
IGL02346:Sptb APN 12 76,667,788 (GRCm39) missense probably damaging 1.00
IGL02452:Sptb APN 12 76,655,810 (GRCm39) critical splice donor site probably null
IGL02515:Sptb APN 12 76,653,261 (GRCm39) missense possibly damaging 0.51
IGL02545:Sptb APN 12 76,654,754 (GRCm39) critical splice donor site probably null
IGL02644:Sptb APN 12 76,652,391 (GRCm39) missense probably damaging 1.00
IGL02878:Sptb APN 12 76,667,527 (GRCm39) missense probably benign 0.20
IGL03007:Sptb APN 12 76,668,115 (GRCm39) missense probably damaging 1.00
IGL03220:Sptb APN 12 76,659,684 (GRCm39) missense probably benign 0.06
IGL03343:Sptb APN 12 76,630,330 (GRCm39) unclassified probably benign
IGL03098:Sptb UTSW 12 76,668,273 (GRCm39) missense probably damaging 1.00
PIT4472001:Sptb UTSW 12 76,667,460 (GRCm39) missense probably damaging 1.00
R0047:Sptb UTSW 12 76,669,724 (GRCm39) missense probably damaging 0.99
R0365:Sptb UTSW 12 76,647,157 (GRCm39) missense probably benign 0.12
R0373:Sptb UTSW 12 76,668,145 (GRCm39) missense probably benign 0.03
R0704:Sptb UTSW 12 76,630,368 (GRCm39) missense probably damaging 0.99
R1005:Sptb UTSW 12 76,648,633 (GRCm39) critical splice donor site probably null
R1109:Sptb UTSW 12 76,650,377 (GRCm39) missense probably damaging 1.00
R1264:Sptb UTSW 12 76,659,381 (GRCm39) missense probably damaging 1.00
R1358:Sptb UTSW 12 76,668,100 (GRCm39) missense probably damaging 1.00
R1358:Sptb UTSW 12 76,668,095 (GRCm39) frame shift probably null
R1459:Sptb UTSW 12 76,658,657 (GRCm39) missense probably benign 0.01
R1518:Sptb UTSW 12 76,650,798 (GRCm39) missense possibly damaging 0.95
R1628:Sptb UTSW 12 76,630,622 (GRCm39) missense probably damaging 1.00
R1668:Sptb UTSW 12 76,667,943 (GRCm39) missense probably benign
R1677:Sptb UTSW 12 76,676,423 (GRCm39) missense probably damaging 1.00
R1687:Sptb UTSW 12 76,650,473 (GRCm39) missense possibly damaging 0.95
R1695:Sptb UTSW 12 76,667,641 (GRCm39) missense probably benign 0.10
R1708:Sptb UTSW 12 76,659,348 (GRCm39) missense probably damaging 1.00
R1761:Sptb UTSW 12 76,659,382 (GRCm39) missense probably damaging 0.96
R1925:Sptb UTSW 12 76,669,027 (GRCm39) missense probably damaging 1.00
R2011:Sptb UTSW 12 76,679,246 (GRCm39) missense possibly damaging 0.95
R2373:Sptb UTSW 12 76,667,935 (GRCm39) missense probably damaging 1.00
R2517:Sptb UTSW 12 76,696,643 (GRCm39) missense possibly damaging 0.55
R2918:Sptb UTSW 12 76,645,532 (GRCm39) missense probably damaging 0.97
R2961:Sptb UTSW 12 76,650,356 (GRCm39) missense probably benign 0.19
R3409:Sptb UTSW 12 76,657,589 (GRCm39) missense possibly damaging 0.78
R3410:Sptb UTSW 12 76,657,589 (GRCm39) missense possibly damaging 0.78
R3411:Sptb UTSW 12 76,657,589 (GRCm39) missense possibly damaging 0.78
R3744:Sptb UTSW 12 76,647,174 (GRCm39) missense probably benign
R4112:Sptb UTSW 12 76,644,553 (GRCm39) missense probably damaging 0.99
R4177:Sptb UTSW 12 76,659,953 (GRCm39) missense probably benign 0.25
R4194:Sptb UTSW 12 76,659,784 (GRCm39) missense probably benign 0.44
R4301:Sptb UTSW 12 76,659,471 (GRCm39) missense probably damaging 1.00
R4555:Sptb UTSW 12 76,659,625 (GRCm39) missense probably benign 0.03
R4619:Sptb UTSW 12 76,630,581 (GRCm39) nonsense probably null
R4620:Sptb UTSW 12 76,630,581 (GRCm39) nonsense probably null
R4625:Sptb UTSW 12 76,634,100 (GRCm39) splice site probably null
R4728:Sptb UTSW 12 76,630,153 (GRCm39) missense probably benign 0.00
R4751:Sptb UTSW 12 76,673,884 (GRCm39) missense probably benign 0.07
R4810:Sptb UTSW 12 76,669,971 (GRCm39) nonsense probably null
R4888:Sptb UTSW 12 76,655,811 (GRCm39) missense probably benign 0.00
R4894:Sptb UTSW 12 76,671,768 (GRCm39) critical splice donor site probably null
R5114:Sptb UTSW 12 76,656,052 (GRCm39) missense probably damaging 1.00
R5191:Sptb UTSW 12 76,659,608 (GRCm39) missense probably benign 0.12
R5479:Sptb UTSW 12 76,646,625 (GRCm39) missense probably benign 0.04
R5646:Sptb UTSW 12 76,634,215 (GRCm39) missense probably benign
R5725:Sptb UTSW 12 76,669,888 (GRCm39) missense probably benign 0.25
R5727:Sptb UTSW 12 76,669,888 (GRCm39) missense probably benign 0.25
R5797:Sptb UTSW 12 76,650,473 (GRCm39) missense possibly damaging 0.95
R5874:Sptb UTSW 12 76,645,501 (GRCm39) missense possibly damaging 0.91
R5952:Sptb UTSW 12 76,679,158 (GRCm39) missense probably benign 0.02
R5956:Sptb UTSW 12 76,650,942 (GRCm39) missense probably benign
R6298:Sptb UTSW 12 76,667,428 (GRCm39) critical splice donor site probably null
R6470:Sptb UTSW 12 76,659,603 (GRCm39) missense probably damaging 1.00
R6477:Sptb UTSW 12 76,653,166 (GRCm39) missense probably damaging 1.00
R6736:Sptb UTSW 12 76,659,954 (GRCm39) missense possibly damaging 0.49
R6854:Sptb UTSW 12 76,650,254 (GRCm39) missense probably damaging 1.00
R6969:Sptb UTSW 12 76,654,781 (GRCm39) missense probably damaging 1.00
R6987:Sptb UTSW 12 76,660,021 (GRCm39) missense probably benign 0.00
R7023:Sptb UTSW 12 76,671,862 (GRCm39) missense probably damaging 1.00
R7366:Sptb UTSW 12 76,650,968 (GRCm39) missense probably damaging 1.00
R7379:Sptb UTSW 12 76,657,651 (GRCm39) missense probably damaging 1.00
R7389:Sptb UTSW 12 76,671,003 (GRCm39) missense probably damaging 0.98
R7392:Sptb UTSW 12 76,671,003 (GRCm39) missense probably damaging 0.98
R7477:Sptb UTSW 12 76,675,339 (GRCm39) missense probably damaging 1.00
R7653:Sptb UTSW 12 76,675,271 (GRCm39) missense probably benign 0.06
R7684:Sptb UTSW 12 76,658,969 (GRCm39) missense probably benign 0.06
R7733:Sptb UTSW 12 76,644,695 (GRCm39) splice site probably null
R7846:Sptb UTSW 12 76,655,300 (GRCm39) nonsense probably null
R8048:Sptb UTSW 12 76,675,333 (GRCm39) missense probably benign 0.02
R8324:Sptb UTSW 12 76,665,936 (GRCm39) missense possibly damaging 0.73
R8512:Sptb UTSW 12 76,648,826 (GRCm39) missense possibly damaging 0.51
R8515:Sptb UTSW 12 76,658,815 (GRCm39) missense probably benign 0.10
R8558:Sptb UTSW 12 76,659,561 (GRCm39) missense probably benign 0.09
R8872:Sptb UTSW 12 76,658,813 (GRCm39) missense probably benign 0.37
R8907:Sptb UTSW 12 76,634,186 (GRCm39) missense probably benign 0.16
R9047:Sptb UTSW 12 76,679,308 (GRCm39) splice site probably benign
R9079:Sptb UTSW 12 76,677,454 (GRCm39) missense probably damaging 1.00
R9166:Sptb UTSW 12 76,673,776 (GRCm39) missense probably damaging 0.96
R9381:Sptb UTSW 12 76,634,292 (GRCm39) missense probably benign
R9601:Sptb UTSW 12 76,667,763 (GRCm39) missense probably damaging 1.00
R9680:Sptb UTSW 12 76,677,489 (GRCm39) missense probably damaging 1.00
R9771:Sptb UTSW 12 76,650,353 (GRCm39) missense probably damaging 1.00
X0057:Sptb UTSW 12 76,677,513 (GRCm39) missense probably benign
Z1176:Sptb UTSW 12 76,667,507 (GRCm39) nonsense probably null
Z1177:Sptb UTSW 12 76,653,219 (GRCm39) missense probably benign 0.22
Z1177:Sptb UTSW 12 76,630,358 (GRCm39) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- GGAAGAAGTTTTCCGCATCCTG -3'
(R):5'- CACCTAGAGCAGTGCTTCAG -3'

Sequencing Primer
(F):5'- TCCGCATCCTGCAGGTC -3'
(R):5'- CCTAGAGCAGTGCTTCAGTGAAC -3'
Posted On 2020-07-28