Incidental Mutation 'R5311:Ext2'
ID 404832
Institutional Source Beutler Lab
Gene Symbol Ext2
Ensembl Gene ENSMUSG00000027198
Gene Name exostosin glycosyltransferase 2
Synonyms
MMRRC Submission 042894-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R5311 (G1)
Quality Score 176
Status Not validated
Chromosome 2
Chromosomal Location 93525978-93652913 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 93526606 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Valine at position 677 (I677V)
Ref Sequence ENSEMBL: ENSMUSP00000028623 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000028623] [ENSMUST00000125407] [ENSMUST00000184931]
AlphaFold P70428
Predicted Effect probably benign
Transcript: ENSMUST00000028623
AA Change: I677V

PolyPhen 2 Score 0.038 (Sensitivity: 0.94; Specificity: 0.82)
SMART Domains Protein: ENSMUSP00000028623
Gene: ENSMUSG00000027198
AA Change: I677V

DomainStartEndE-ValueType
transmembrane domain 24 46 N/A INTRINSIC
Pfam:Exostosin 100 380 2.4e-59 PFAM
Pfam:Glyco_transf_64 456 701 1.1e-99 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000125407
SMART Domains Protein: ENSMUSP00000120291
Gene: ENSMUSG00000027198

DomainStartEndE-ValueType
transmembrane domain 24 46 N/A INTRINSIC
Pfam:Exostosin 100 380 8.8e-59 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000139321
Predicted Effect probably benign
Transcript: ENSMUST00000184931
SMART Domains Protein: ENSMUSP00000138956
Gene: ENSMUSG00000027198

DomainStartEndE-ValueType
transmembrane domain 24 46 N/A INTRINSIC
Pfam:Exostosin 100 380 1.4e-57 PFAM
Pfam:Glyco_transf_64 456 559 9.5e-31 PFAM
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.7%
  • 10x: 97.3%
  • 20x: 95.2%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes one of two glycosyltransferases involved in the chain elongation step of heparan sulfate biosynthesis. Mutations in this gene cause the type II form of multiple exostoses. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jul 2008]
PHENOTYPE: Homozygous null embryos lack heparan sulfate, initiate primitive streak formation but fail to form mesoderm, become growth arrested and die around gastrulation. Heterozygotes show various abnormalities in cartilage differentiation; about one-third form one or more exostoses on the ribs. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 48 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Ap5z1 A G 5: 142,453,442 (GRCm39) K137E possibly damaging Het
Atm A C 9: 53,429,923 (GRCm39) V371G probably benign Het
Cacna2d3 A G 14: 29,068,987 (GRCm39) Y247H probably damaging Het
Ccdc180 T C 4: 45,917,556 (GRCm39) V927A probably damaging Het
Cdc45 C T 16: 18,614,647 (GRCm39) R205H probably damaging Het
Edar G A 10: 58,443,257 (GRCm39) P290S possibly damaging Het
Fam53a A G 5: 33,765,080 (GRCm39) S209P probably damaging Het
Fshr A T 17: 89,318,441 (GRCm39) probably null Het
Gfm2 G A 13: 97,299,659 (GRCm39) A406T probably damaging Het
Gm14295 A T 2: 176,502,465 (GRCm39) I652L probably benign Het
Gm14403 AAACCCTA AA 2: 177,201,448 (GRCm39) probably benign Het
Gm5431 T A 11: 48,779,716 (GRCm39) E402V probably damaging Het
Gm6899 GGAGGCCGCCCAGTGGCAGAGGCCGCCCAGTGGCAGAGGC GGAGGCCGCCCAGTGGCAGAGGC 11: 26,543,725 (GRCm39) probably null Het
Itih2 T C 2: 10,115,346 (GRCm39) D342G probably benign Het
Lgi2 A T 5: 52,711,827 (GRCm39) D164E probably damaging Het
Lrriq1 A G 10: 103,050,448 (GRCm39) I768T probably damaging Het
Map1a C A 2: 121,132,868 (GRCm39) A990E probably damaging Het
Mdh1b A G 1: 63,759,163 (GRCm39) V143A probably benign Het
Mrgprb3 C T 7: 48,293,059 (GRCm39) C164Y probably damaging Het
Mtpap T A 18: 4,386,328 (GRCm39) V316E probably damaging Het
Mybpc3 T A 2: 90,959,023 (GRCm39) C655* probably null Het
Myh15 A G 16: 48,986,204 (GRCm39) E1558G possibly damaging Het
Mylk A G 16: 34,742,127 (GRCm39) T880A probably benign Het
Nckap1 T A 2: 80,370,466 (GRCm39) D408V probably damaging Het
Nos3 A T 5: 24,582,343 (GRCm39) H605L probably benign Het
Nrxn2 C A 19: 6,581,428 (GRCm39) D411E probably benign Het
Or1af1 T C 2: 37,109,633 (GRCm39) V44A probably benign Het
Or8j3b T A 2: 86,205,094 (GRCm39) I221L possibly damaging Het
Pde4d C A 13: 109,769,398 (GRCm39) P29T probably benign Het
Pde4d C T 13: 109,769,399 (GRCm39) P29L probably benign Het
Pkhd1 A G 1: 20,636,094 (GRCm39) V412A possibly damaging Het
Rev1 T A 1: 38,118,474 (GRCm39) I480L probably benign Het
Rimbp3 A G 16: 17,028,708 (GRCm39) T711A probably benign Het
RP23-191E1.1 T A 3: 106,204,784 (GRCm39) noncoding transcript Het
Serpina11 A T 12: 103,952,221 (GRCm39) I183N probably damaging Het
Siglec1 T C 2: 130,921,236 (GRCm39) H645R probably damaging Het
Skint7 G A 4: 111,837,501 (GRCm39) R93H probably damaging Het
Slfn8 T C 11: 82,894,910 (GRCm39) E632G probably damaging Het
Tmem8b G A 4: 43,673,992 (GRCm39) V208I probably benign Het
Trps1 G A 15: 50,528,156 (GRCm39) T658I probably damaging Het
Ubash3a A G 17: 31,438,691 (GRCm39) T287A probably damaging Het
Ugt2b35 G A 5: 87,159,139 (GRCm39) W444* probably null Het
Vmn1r219 T A 13: 23,347,063 (GRCm39) V84D probably damaging Het
Vmn2r10 T C 5: 109,154,121 (GRCm39) Y61C probably damaging Het
Vmn2r104 G A 17: 20,250,163 (GRCm39) P703S probably damaging Het
Wdsub1 T A 2: 59,708,873 (GRCm39) probably benign Het
Zfp667 A G 7: 6,308,715 (GRCm39) Q461R probably benign Het
Zfp941 C A 7: 140,391,872 (GRCm39) G496* probably null Het
Other mutations in Ext2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01132:Ext2 APN 2 93,621,418 (GRCm39) missense probably benign
IGL01554:Ext2 APN 2 93,642,294 (GRCm39) missense probably damaging 1.00
IGL01768:Ext2 APN 2 93,621,455 (GRCm39) splice site probably benign
IGL02160:Ext2 APN 2 93,643,929 (GRCm39) missense probably benign
IGL02677:Ext2 APN 2 93,537,590 (GRCm39) missense probably damaging 1.00
IGL02939:Ext2 APN 2 93,534,964 (GRCm39) splice site probably null
IGL03013:Ext2 APN 2 93,537,571 (GRCm39) intron probably benign
IGL03286:Ext2 APN 2 93,537,617 (GRCm39) missense probably damaging 1.00
R0018:Ext2 UTSW 2 93,626,037 (GRCm39) missense probably damaging 1.00
R0526:Ext2 UTSW 2 93,636,430 (GRCm39) missense probably damaging 0.99
R0580:Ext2 UTSW 2 93,626,070 (GRCm39) missense probably benign 0.31
R1383:Ext2 UTSW 2 93,636,458 (GRCm39) missense possibly damaging 0.92
R1538:Ext2 UTSW 2 93,537,632 (GRCm39) missense probably damaging 1.00
R1743:Ext2 UTSW 2 93,560,570 (GRCm39) missense probably damaging 1.00
R1792:Ext2 UTSW 2 93,534,890 (GRCm39) missense probably damaging 1.00
R2874:Ext2 UTSW 2 93,570,031 (GRCm39) missense possibly damaging 0.95
R3122:Ext2 UTSW 2 93,644,170 (GRCm39) missense probably damaging 1.00
R4624:Ext2 UTSW 2 93,533,545 (GRCm39) missense probably benign 0.26
R4653:Ext2 UTSW 2 93,526,504 (GRCm39) missense probably benign 0.22
R4826:Ext2 UTSW 2 93,592,975 (GRCm39) missense probably benign 0.15
R4828:Ext2 UTSW 2 93,626,112 (GRCm39) missense probably benign 0.08
R4936:Ext2 UTSW 2 93,644,024 (GRCm39) nonsense probably null
R5799:Ext2 UTSW 2 93,642,317 (GRCm39) missense probably benign 0.01
R5850:Ext2 UTSW 2 93,644,004 (GRCm39) missense possibly damaging 0.94
R6230:Ext2 UTSW 2 93,592,965 (GRCm39) missense probably damaging 1.00
R6488:Ext2 UTSW 2 93,636,430 (GRCm39) missense probably damaging 0.99
R7047:Ext2 UTSW 2 93,570,002 (GRCm39) missense probably damaging 0.99
R7173:Ext2 UTSW 2 93,643,957 (GRCm39) missense probably damaging 1.00
R7391:Ext2 UTSW 2 93,560,612 (GRCm39) missense probably damaging 1.00
R7530:Ext2 UTSW 2 93,491,998 (GRCm39) missense probably benign 0.00
R7545:Ext2 UTSW 2 93,644,108 (GRCm39) missense probably benign
R7939:Ext2 UTSW 2 93,560,601 (GRCm39) missense probably damaging 1.00
R8160:Ext2 UTSW 2 93,644,107 (GRCm39) missense probably benign 0.05
R9072:Ext2 UTSW 2 93,644,144 (GRCm39) missense probably benign 0.28
R9245:Ext2 UTSW 2 93,534,836 (GRCm39) missense probably benign 0.23
R9338:Ext2 UTSW 2 93,526,603 (GRCm39) missense probably damaging 1.00
R9430:Ext2 UTSW 2 93,592,999 (GRCm39) missense possibly damaging 0.84
R9487:Ext2 UTSW 2 93,592,956 (GRCm39) missense probably damaging 1.00
Z1177:Ext2 UTSW 2 93,533,620 (GRCm39) critical splice acceptor site probably benign
Predicted Primers PCR Primer
(F):5'- ACGAGCTCCAGTGTGTTTG -3'
(R):5'- ACTTTCTCCCTCAGACTGGG -3'

Sequencing Primer
(F):5'- GTTTGGGAAGTCGGACCC -3'
(R):5'- AGTCGCTAACCACTTCC -3'
Posted On 2016-07-22