Incidental Mutation 'R4647:Xbp1'
Institutional Source Beutler Lab
Gene Symbol Xbp1
Ensembl Gene ENSMUSG00000020484
Gene NameX-box binding protein 1
SynonymsXBP-1, D11Ertd39e, TREB-5, TREB5
MMRRC Submission 041908-MU
Accession Numbers

Genbank: NM_013842; MGI: 98970; Ensembl: ENSMUST00000109866

Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R4647 (G1)
Quality Score225
Status Not validated
Chromosomal Location5520659-5525893 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 5522006 bp
Amino Acid Change Aspartic acid to Glycine at position 44 (D44G)
Ref Sequence ENSEMBL: ENSMUSP00000135768 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000063084] [ENSMUST00000149623]
Predicted Effect possibly damaging
Transcript: ENSMUST00000063084
AA Change: D97G

PolyPhen 2 Score 0.908 (Sensitivity: 0.81; Specificity: 0.94)
SMART Domains Protein: ENSMUSP00000054852
Gene: ENSMUSG00000020484
AA Change: D97G

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 noncoding transcript
Transcript: ENSMUST00000145588
Predicted Effect unknown
Transcript: ENSMUST00000149159
AA Change: D28G
SMART Domains Protein: ENSMUSP00000134088
Gene: ENSMUSG00000020484
AA Change: D28G

BRLZ 2 57 2.62e-9 SMART
Predicted Effect probably damaging
Transcript: ENSMUST00000149623
AA Change: D44G

PolyPhen 2 Score 0.997 (Sensitivity: 0.41; Specificity: 0.98)
SMART Domains Protein: ENSMUSP00000135768
Gene: ENSMUSG00000020484
AA Change: D44G

BRLZ 11 72 3.68e-13 SMART
low complexity region 132 145 N/A INTRINSIC
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.6%
  • 10x: 97.3%
  • 20x: 95.4%
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: 139 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
1700031F05Rik G T X: 102,860,909 N132K possibly damaging Het
Aatf T C 11: 84,471,197 D313G possibly damaging Het
Abcb11 T G 2: 69,285,271 D583A probably damaging Het
Adgrv1 A T 13: 81,528,795 Y1252* probably null Het
Aim2 T C 1: 173,455,524 silent Het
Angpt1 T A 15: 42,676,184 Y93F probably benign Het
Ankrd27 C T 7: 35,638,234 P991L probably benign Het
Ap1s3 C T 1: 79,614,203 probably null Het
Apbb1 A C 7: 105,565,538 S500A probably benign Het
Arc G A 15: 74,671,525 A283V probably damaging Het
Bbs10 A G 10: 111,301,134 K703E probably benign Het
C1galt1c1 A T X: 38,631,472 S216T probably benign Het
C1qtnf4 T A 2: 90,889,652 S90T probably damaging Het
Cachd1 A T 4: 100,953,130 K310* probably null Het
Calhm1 A G 19: 47,143,801 L125P probably damaging Het
Carmil1 G A 13: 24,137,179 L278F probably damaging Het
Ccar1 A T 10: 62,747,417 Y972* probably null Het
Cd163 C T 6: 124,320,621 P909S probably damaging Het
Cd44 T A 2: 102,837,929 H268L possibly damaging Het
Cdkl2 A T 5: 92,017,213 L517Q probably damaging Het
Cep68 G T 11: 20,239,349 N554K probably benign Het
Ces1d A G 8: 93,166,410 W515R probably damaging Het
Clca4b A C 3: 144,928,525 H102Q probably benign Het
Cldn15 T A 5: 136,974,483 I142N probably damaging Het
Cmklr1 T A 5: 113,614,640 D100V probably damaging Het
Crocc2 G A 1: 93,168,794 V24M possibly damaging Het
D430041D05Rik G A 2: 104,258,443 P63S probably damaging Het
Ddx39 A T 8: 83,722,273 H259L probably benign Het
Dhx16 C G 17: 35,885,635 A565G probably benign Het
Dimt1 A T 13: 106,947,655 D50V probably benign Het
Dock9 A T 14: 121,586,246 L1428H probably damaging Het
Dpp4 G T 2: 62,334,605 T700K probably damaging Het
E030030I06Rik T A 10: 22,148,845 R56S unknown Het
Eea1 A G 10: 96,028,393 T925A probably benign Het
Ext1 A G 15: 53,089,987 S494P possibly damaging Het
Fam171a1 G A 2: 3,220,291 E140K probably damaging Het
Fam19a5 T G 15: 87,720,582 S115A probably damaging Het
Fgfr3 C T 5: 33,734,986 probably benign Het
Gabra6 A G 11: 42,307,372 I407T probably damaging Het
Gm13089 T C 4: 143,699,344 M10V probably benign Het
Gm16223 C A 5: 42,214,611 L115M unknown Het
Gm4781 G T 10: 100,397,000 noncoding transcript Het
Gm9772 T A 17: 22,007,032 I70F possibly damaging Het
Gpr107 T A 2: 31,210,501 F497Y probably damaging Het
Grm7 T A 6: 110,914,383 Y192* probably null Het
Gtf2ird2 G A 5: 134,216,192 A431T probably damaging Het
H2-K2 T A 17: 33,976,015 noncoding transcript Het
H2-M11 T A 17: 36,547,991 V141D probably benign Het
Hmcn1 A G 1: 150,675,511 probably null Het
Hmcn2 A T 2: 31,399,019 Q2280L possibly damaging Het
Hmg20b T A 10: 81,348,582 Q129L probably damaging Het
Igfbp7 T A 5: 77,351,296 Q285L possibly damaging Het
Igkv13-85 T A 6: 68,930,736 probably benign Het
Inpp5e A T 2: 26,407,914 L225H probably benign Het
Inpp5f T A 7: 128,659,109 V91E possibly damaging Het
Khdc3 A G 9: 73,102,586 E26G possibly damaging Het
Klra5 T A 6: 129,899,376 D156V probably damaging Het
Kmo C A 1: 175,659,774 Y430* probably null Het
Lbx2 A G 6: 83,088,046 D188G probably damaging Het
Lcorl A T 5: 45,733,589 L474* probably null Het
Lnx1 C T 5: 74,610,796 V350I probably benign Het
Lrrc45 T A 11: 120,719,121 S464T probably benign Het
Ltc4s T A 11: 50,237,225 T61S probably benign Het
Luc7l3 A C 11: 94,309,641 N50K probably damaging Het
Ly75 G A 2: 60,308,278 T1415M probably damaging Het
Macf1 T C 4: 123,473,627 E2447G probably benign Het
Map3k21 A G 8: 125,942,111 D812G probably benign Het
Mbtd1 C T 11: 93,924,611 H342Y probably damaging Het
Mest C T 6: 30,745,110 R226* probably null Het
Mindy1 A T 3: 95,282,743 probably benign Het
Mmp13 A T 9: 7,274,233 D180V probably damaging Het
Mn1 A G 5: 111,420,083 T640A probably benign Het
Msi2 T C 11: 88,718,038 H18R possibly damaging Het
Myo18a T A 11: 77,817,950 V61E probably damaging Het
Myo19 T G 11: 84,894,642 I237S probably damaging Het
Ncaph2 T A 15: 89,370,432 L416Q probably damaging Het
Nlrp1a T A 11: 71,097,126 probably null Het
Olfr1450 A G 19: 12,954,077 I163V probably benign Het
Olfr282 G T 15: 98,437,576 V36F probably benign Het
Olfr353 A G 2: 36,890,651 F66L probably benign Het
Olfr559 A G 7: 102,724,092 S133P probably damaging Het
Olfr710 A T 7: 106,944,340 N220K probably benign Het
Padi2 T C 4: 140,944,446 F495S probably damaging Het
Pan3 G T 5: 147,527,203 D535Y probably damaging Het
Paqr3 T A 5: 97,108,210 R102* probably null Het
Patl1 T A 19: 11,914,434 D34E probably damaging Het
Pcdha6 A T 18: 36,969,136 T461S probably damaging Het
Pcnt T C 10: 76,354,213 S2830G probably benign Het
Pdgfa G A 5: 138,979,184 T181I probably benign Het
Pds5a C A 5: 65,656,318 D275Y probably damaging Het
Plod2 T A 9: 92,605,450 Y607* probably null Het
Pomt2 G T 12: 87,118,083 T517K possibly damaging Het
Prdm1 T C 10: 44,439,690 T817A probably damaging Het
Prdm2 T C 4: 143,132,955 D1255G possibly damaging Het
Prex2 T A 1: 11,162,285 C859S probably damaging Het
Ralgapa2 A T 2: 146,387,629 M1077K possibly damaging Het
Ralgds T C 2: 28,545,520 probably null Het
Rasa3 T C 8: 13,588,865 E314G probably null Het
Rasa4 T A 5: 136,101,363 D324E probably damaging Het
Rbm46 A T 3: 82,864,458 D283E probably benign Het
Rnf139 A T 15: 58,899,987 L620F probably benign Het
Rptor T A 11: 119,891,163 N1105K probably benign Het
Scaf11 A T 15: 96,420,100 probably null Het
Sectm1b A T 11: 121,055,934 V45E probably damaging Het
Selenon A G 4: 134,545,657 W157R probably damaging Het
Sema3b C A 9: 107,599,051 R657L possibly damaging Het
Setd1b C T 5: 123,148,112 A407V unknown Het
Sh3tc1 C T 5: 35,706,318 A842T probably damaging Het
Shank2 A G 7: 144,411,829 E1268G probably damaging Het
Shmt1 G A 11: 60,801,465 S155F probably damaging Het
Sim2 A G 16: 94,123,526 E510G possibly damaging Het
Slc25a46 A T 18: 31,600,192 I168N probably damaging Het
Slc26a4 T G 12: 31,540,526 D376A possibly damaging Het
Slfn14 G T 11: 83,276,658 A677E probably benign Het
Slk G T 19: 47,620,274 Q555H possibly damaging Het
Synj1 A T 16: 90,973,989 D517E probably damaging Het
Syvn1 G A 19: 6,051,474 R440Q probably benign Het
Tas2r118 A T 6: 23,969,468 I198N probably damaging Het
Tdh A G 14: 63,493,756 L323P possibly damaging Het
Tet2 A T 3: 133,488,082 M197K probably benign Het
Timeless A G 10: 128,239,956 Y19C possibly damaging Het
Tnn T C 1: 160,146,042 M252V probably benign Het
Trdn G T 10: 33,195,981 E215* probably null Het
Trmt1l G T 1: 151,457,881 V712F possibly damaging Het
Tti1 T C 2: 158,007,020 probably benign Het
Ulk4 T C 9: 121,141,852 H1018R probably benign Het
Vim A T 2: 13,582,495 H461L probably benign Het
Vmn2r118 T A 17: 55,610,665 E282D probably damaging Het
Vmn2r31 T A 7: 7,384,368 I735F probably damaging Het
Vmn2r88 A G 14: 51,418,793 M829V probably benign Het
Washc4 T A 10: 83,574,543 M665K possibly damaging Het
Wbp2 T A 11: 116,082,381 M67L probably benign Het
Wdr81 T A 11: 75,445,988 E1525V probably damaging Het
Zfhx4 T G 3: 5,399,281 F1500V probably damaging Het
Zfp286 A C 11: 62,783,733 Y95* probably null Het
Zfp872 A G 9: 22,199,761 T178A possibly damaging Het
Zkscan5 A G 5: 145,218,830 H364R possibly damaging Het
Zp3r A T 1: 130,577,960 Y422N probably damaging Het
Zscan10 C T 17: 23,610,340 R542C probably benign Het
Other mutations in Xbp1
AlleleSourceChrCoordTypePredicted EffectPPH Score
R1601:Xbp1 UTSW 11 5521975 missense probably damaging 1.00
R2256:Xbp1 UTSW 11 5524841 missense probably damaging 1.00
R4782:Xbp1 UTSW 11 5521167 missense probably damaging 1.00
R4964:Xbp1 UTSW 11 5521125 missense probably damaging 0.98
R5367:Xbp1 UTSW 11 5521910 missense probably benign
R5718:Xbp1 UTSW 11 5521903 missense probably benign 0.00
R5928:Xbp1 UTSW 11 5523514 intron probably benign
R6038:Xbp1 UTSW 11 5524798 missense probably benign 0.00
R6038:Xbp1 UTSW 11 5524798 missense probably benign 0.00
R6492:Xbp1 UTSW 11 5521005 missense probably benign
R6835:Xbp1 UTSW 11 5521809 start gained probably benign
R6955:Xbp1 UTSW 11 5522018 missense probably null 0.97
R7067:Xbp1 UTSW 11 5524275 missense probably damaging 1.00
R7483:Xbp1 UTSW 11 5521098 missense probably benign 0.02
R7502:Xbp1 UTSW 11 5524683 critical splice acceptor site probably null
R7819:Xbp1 UTSW 11 5524886 missense probably benign 0.01
R8024:Xbp1 UTSW 11 5521910 missense probably benign
R8512:Xbp1 UTSW 11 5524266 missense probably damaging 1.00
Predicted Primers PCR Primer

Sequencing Primer
Posted On2015-10-08