Incidental Mutation 'R8512:Xbp1'
ID 655940
Institutional Source Beutler Lab
Gene Symbol Xbp1
Ensembl Gene ENSMUSG00000020484
Gene Name X-box binding protein 1
Synonyms XBP-1, TREB-5, TREB5, D11Ertd39e
MMRRC Submission 067846-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R8512 (G1)
Quality Score 225.009
Status Not validated
Chromosome 11
Chromosomal Location 5470659-5475893 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 5474266 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Serine to Proline at position 156 (S156P)
Ref Sequence ENSEMBL: ENSMUSP00000054852 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000020776] [ENSMUST00000063084] [ENSMUST00000149623]
AlphaFold O35426
Predicted Effect probably benign
Transcript: ENSMUST00000020776
SMART Domains Protein: ENSMUSP00000020776
Gene: ENSMUSG00000020482

DomainStartEndE-ValueType
low complexity region 22 37 N/A INTRINSIC
Pfam:CCDC117 139 277 1.9e-56 PFAM
Predicted Effect probably damaging
Transcript: ENSMUST00000063084
AA Change: S156P

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000054852
Gene: ENSMUSG00000020484
AA Change: S156P

DomainStartEndE-ValueType
low complexity region 2 17 N/A INTRINSIC
BRLZ 61 125 9.12e-18 SMART
low complexity region 185 198 N/A INTRINSIC
Predicted Effect
SMART Domains Protein: ENSMUSP00000134088
Gene: ENSMUSG00000020484
AA Change: S87P

DomainStartEndE-ValueType
BRLZ 2 57 2.62e-9 SMART
Predicted Effect probably damaging
Transcript: ENSMUST00000149623
AA Change: S103P

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000135768
Gene: ENSMUSG00000020484
AA Change: S103P

DomainStartEndE-ValueType
BRLZ 11 72 3.68e-13 SMART
low complexity region 132 145 N/A INTRINSIC
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.7%
  • 20x: 99.3%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a transcription factor that regulates MHC class II genes by binding to a promoter element referred to as an X box. This gene product is a bZIP protein, which was also identified as a cellular transcription factor that binds to an enhancer in the promoter of the T cell leukemia virus type 1 promoter. It may increase expression of viral proteins by acting as the DNA binding partner of a viral transactivator. It has been found that upon accumulation of unfolded proteins in the endoplasmic reticulum (ER), the mRNA of this gene is processed to an active form by an unconventional splicing mechanism that is mediated by the endonuclease inositol-requiring enzyme 1 (IRE1). The resulting loss of 26 nt from the spliced mRNA causes a frame-shift and an isoform XBP1(S), which is the functionally active transcription factor. The isoform encoded by the unspliced mRNA, XBP1(U), is constitutively expressed, and thought to function as a negative feedback regulator of XBP1(S), which shuts off transcription of target genes during the recovery phase of ER stress. A pseudogene of XBP1 has been identified and localized to chromosome 5. [provided by RefSeq, Jul 2008]
PHENOTYPE: Homozygous mutants exhibit markedly impaired liver development resulting in severe anemia, necrosis of cardiac myocytes, morphological abnormalities of the neural tube, and fetal death around embryonic day 14. [provided by MGI curators]
Allele List at MGI

All alleles(16) : Targeted, knock-out(3) Targeted, other(6) Gene trapped(7)

Other mutations in this stock
Total: 50 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adgre4 T C 17: 56,125,760 (GRCm39) probably null Het
Akap13 T C 7: 75,260,834 (GRCm39) S350P probably damaging Het
Celsr2 A G 3: 108,321,154 (GRCm39) F553L probably damaging Het
Ces3a A T 8: 105,784,661 (GRCm39) T548S probably benign Het
Chtf8 G A 8: 107,612,066 (GRCm39) T291I probably benign Het
Ckmt1 A T 2: 121,191,689 (GRCm39) R286S probably damaging Het
Dnajb2 C T 1: 75,218,075 (GRCm39) R191W Het
Dtnbp1 G T 13: 45,075,867 (GRCm39) A292E probably benign Het
Esrrg T G 1: 187,775,777 (GRCm39) Y101* probably null Het
Etaa1 G A 11: 17,897,442 (GRCm39) S225L probably damaging Het
Evi5l A G 8: 4,243,121 (GRCm39) Y335C probably benign Het
Fcho2 T C 13: 98,891,730 (GRCm39) D344G possibly damaging Het
Ggnbp2 C T 11: 84,728,815 (GRCm39) probably null Het
Gsdmc2 C T 15: 63,706,864 (GRCm39) V101I probably null Het
Gsdmc4 A G 15: 63,763,808 (GRCm39) C430R probably damaging Het
Irak4 A C 15: 94,464,659 (GRCm39) I410L probably benign Het
Kirrel1 A G 3: 86,995,534 (GRCm39) V436A probably benign Het
Lrrc30 T A 17: 67,938,947 (GRCm39) Q211L probably damaging Het
Map4k1 C T 7: 28,695,583 (GRCm39) H512Y possibly damaging Het
Matn3 T A 12: 9,011,183 (GRCm39) S365T probably benign Het
Msantd2 T C 9: 37,434,231 (GRCm39) I358T possibly damaging Het
Msantd5 T A 11: 51,125,487 (GRCm39) S137T probably benign Het
Msx3 G T 7: 139,628,884 (GRCm39) A10E probably benign Het
Muc16 T C 9: 18,549,488 (GRCm39) T5602A probably benign Het
Myh2 T C 11: 67,081,187 (GRCm39) S1268P probably benign Het
Mynn C T 3: 30,670,798 (GRCm39) P557S probably damaging Het
Naglu T C 11: 100,961,168 (GRCm39) V73A probably benign Het
Ncor1 AGCTGCTGCTGCTGCTGCTGCTGCTG AGCTGCTGCTGCTGCTGCTGCTG 11: 62,324,437 (GRCm39) probably benign Het
Or10al3 T A 17: 38,012,071 (GRCm39) F170Y probably damaging Het
Or6c75 T A 10: 129,337,496 (GRCm39) S240T probably damaging Het
P2rx3 C T 2: 84,854,755 (GRCm39) E100K probably damaging Het
Pnisr C T 4: 21,870,372 (GRCm39) Q375* probably null Het
Psmb9 C T 17: 34,402,602 (GRCm39) C126Y probably benign Het
Ptprt A G 2: 161,400,783 (GRCm39) F1085L probably benign Het
Rev3l A G 10: 39,697,534 (GRCm39) Y677C probably damaging Het
Rftn2 G A 1: 55,253,324 (GRCm39) P93L probably damaging Het
Rtl1 T A 12: 109,561,051 (GRCm39) M263L unknown Het
Sec24c T C 14: 20,740,920 (GRCm39) V722A possibly damaging Het
Slc2a7 T C 4: 150,247,752 (GRCm39) L384P probably benign Het
Slc6a11 T C 6: 114,215,402 (GRCm39) L434P probably damaging Het
Sptb T C 12: 76,648,826 (GRCm39) E1869G possibly damaging Het
Susd2 G A 10: 75,475,485 (GRCm39) T473I probably benign Het
Synpo C T 18: 60,735,483 (GRCm39) R821H probably damaging Het
Tdrd9 G A 12: 112,012,627 (GRCm39) V1184I probably benign Het
Tle1 T G 4: 72,040,670 (GRCm39) K630Q possibly damaging Het
Traf3 A T 12: 111,228,426 (GRCm39) T546S probably benign Het
Ttc17 G A 2: 94,202,108 (GRCm39) T398M probably damaging Het
Ttn G C 2: 76,698,692 (GRCm39) N136K Het
Ttn T C 2: 76,747,111 (GRCm39) E4646G probably benign Het
Yipf7 C T 5: 69,674,387 (GRCm39) V253I probably benign Het
Other mutations in Xbp1
AlleleSourceChrCoordTypePredicted EffectPPH Score
R1601:Xbp1 UTSW 11 5,471,975 (GRCm39) missense probably damaging 1.00
R2256:Xbp1 UTSW 11 5,474,841 (GRCm39) missense probably damaging 1.00
R4647:Xbp1 UTSW 11 5,472,006 (GRCm39) missense probably damaging 1.00
R4782:Xbp1 UTSW 11 5,471,167 (GRCm39) missense probably damaging 1.00
R4964:Xbp1 UTSW 11 5,471,125 (GRCm39) missense probably damaging 0.98
R5367:Xbp1 UTSW 11 5,471,910 (GRCm39) missense probably benign
R5718:Xbp1 UTSW 11 5,471,903 (GRCm39) missense probably benign 0.00
R5928:Xbp1 UTSW 11 5,473,514 (GRCm39) intron probably benign
R6038:Xbp1 UTSW 11 5,474,798 (GRCm39) missense probably benign 0.00
R6038:Xbp1 UTSW 11 5,474,798 (GRCm39) missense probably benign 0.00
R6492:Xbp1 UTSW 11 5,471,005 (GRCm39) missense probably benign
R6835:Xbp1 UTSW 11 5,471,809 (GRCm39) start gained probably benign
R6955:Xbp1 UTSW 11 5,472,018 (GRCm39) missense probably null 0.97
R7067:Xbp1 UTSW 11 5,474,275 (GRCm39) missense probably damaging 1.00
R7483:Xbp1 UTSW 11 5,471,098 (GRCm39) missense probably benign 0.02
R7502:Xbp1 UTSW 11 5,474,683 (GRCm39) critical splice acceptor site probably null
R7819:Xbp1 UTSW 11 5,474,886 (GRCm39) missense probably benign 0.01
R8024:Xbp1 UTSW 11 5,471,910 (GRCm39) missense probably benign
R8933:Xbp1 UTSW 11 5,474,741 (GRCm39) missense probably benign 0.00
Predicted Primers PCR Primer
(F):5'- TGGGTTTATACACATCTCTGCTTAC -3'
(R):5'- TTTGCCTGGCTAAGCGTGTC -3'

Sequencing Primer
(F):5'- CAGCAGAGTGTCTCACTGAATCTG -3'
(R):5'- GTGTCACACGCCACTTAGG -3'
Posted On 2020-10-20