Incidental Mutation 'R4826:Ext2'
ID 374124
Institutional Source Beutler Lab
Gene Symbol Ext2
Ensembl Gene ENSMUSG00000027198
Gene Name exostosin glycosyltransferase 2
Synonyms
MMRRC Submission 042442-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4826 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 93525978-93652913 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 93592975 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Threonine to Alanine at position 410 (T410A)
Ref Sequence ENSEMBL: ENSMUSP00000138956 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000028623] [ENSMUST00000125407] [ENSMUST00000184931]
AlphaFold P70428
Predicted Effect probably benign
Transcript: ENSMUST00000028623
AA Change: T410A

PolyPhen 2 Score 0.004 (Sensitivity: 0.98; Specificity: 0.59)
SMART Domains Protein: ENSMUSP00000028623
Gene: ENSMUSG00000027198
AA Change: T410A

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 noncoding transcript
Transcript: ENSMUST00000123649
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: ENSMUST00000152344
Predicted Effect probably benign
Transcript: ENSMUST00000184931
AA Change: T410A

PolyPhen 2 Score 0.150 (Sensitivity: 0.92; Specificity: 0.87)
SMART Domains Protein: ENSMUSP00000138956
Gene: ENSMUSG00000027198
AA Change: T410A

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
Meta Mutation Damage Score 0.1771 question?
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.5%
  • 10x: 96.8%
  • 20x: 94.0%
Validation Efficiency 100% (72/72)
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: 59 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca14 A T 7: 119,815,470 (GRCm39) R239S probably damaging Het
Acin1 A G 14: 54,902,074 (GRCm39) S573P probably damaging Het
Acta2 A T 19: 34,229,223 (GRCm39) Y55* probably null Het
Aifm2 T C 10: 61,561,768 (GRCm39) M38T probably benign Het
Ank2 C A 3: 126,749,650 (GRCm39) V460L probably benign Het
Ap1b1 T C 11: 4,968,043 (GRCm39) S185P probably benign Het
Arsj A G 3: 126,232,451 (GRCm39) Y399C probably damaging Het
Ciao3 A G 17: 25,999,306 (GRCm39) H240R probably damaging Het
Clec2d T C 6: 129,161,122 (GRCm39) V73A probably benign Het
Cntln T G 4: 84,923,281 (GRCm39) M582R probably benign Het
Cyp4a10 C T 4: 115,375,541 (GRCm39) P8L probably benign Het
Dip2b A G 15: 100,067,162 (GRCm39) N555D probably damaging Het
Dusp4 T A 8: 35,285,671 (GRCm39) F311I probably damaging Het
Eif4g3 T C 4: 137,905,256 (GRCm39) V1245A possibly damaging Het
Ephb3 G A 16: 21,033,745 (GRCm39) R23H possibly damaging Het
Fam193a A G 5: 34,593,875 (GRCm39) E124G probably damaging Het
Fat4 T A 3: 39,037,106 (GRCm39) V3586E probably damaging Het
Frmd4a T C 2: 4,606,108 (GRCm39) S611P probably damaging Het
Gcn1 A G 5: 115,731,752 (GRCm39) T956A probably benign Het
Gm10549 C A 18: 33,603,838 (GRCm39) T107K unknown Het
Herc6 T A 6: 57,624,072 (GRCm39) M614K probably benign Het
Hspg2 T C 4: 137,292,706 (GRCm39) C4095R probably damaging Het
Hyal5 T C 6: 24,891,575 (GRCm39) I463T possibly damaging Het
Icam5 C T 9: 20,949,099 (GRCm39) A817V possibly damaging Het
Igf2r A T 17: 12,920,240 (GRCm39) D1366E probably damaging Het
Ints7 G A 1: 191,344,018 (GRCm39) V553I probably damaging Het
Iqgap2 T A 13: 95,899,783 (GRCm39) I92F probably damaging Het
Itgb1 T A 8: 129,446,789 (GRCm39) C435S probably damaging Het
Lrrc71 T C 3: 87,650,615 (GRCm39) M216V probably benign Het
Mgam T C 6: 40,657,582 (GRCm39) V979A possibly damaging Het
Mplkipl1 C T 19: 61,164,364 (GRCm39) G24R unknown Het
Myh9 A T 15: 77,673,146 (GRCm39) Y400* probably null Het
Nbeal1 A G 1: 60,290,501 (GRCm39) R1033G possibly damaging Het
Nit1 T C 1: 171,173,166 (GRCm39) probably benign Het
Nlrp1c-ps A G 11: 71,133,343 (GRCm39) noncoding transcript Het
Nt5c1a T C 4: 123,102,365 (GRCm39) V97A probably damaging Het
Or12k5 A G 2: 36,895,345 (GRCm39) Y94H probably damaging Het
Or13a18 T A 7: 140,190,232 (GRCm39) M51K probably benign Het
Or1a1b A G 11: 74,097,157 (GRCm39) M295T possibly damaging Het
Or56a5 G T 7: 104,793,175 (GRCm39) N108K probably damaging Het
Or9m1 T A 2: 87,733,693 (GRCm39) D109V probably damaging Het
Pde4a T A 9: 21,103,676 (GRCm39) probably null Het
Pkn2 T C 3: 142,515,270 (GRCm39) K640R probably damaging Het
Pla2g6 A G 15: 79,192,879 (GRCm39) S263P possibly damaging Het
Prkg1 A G 19: 31,742,006 (GRCm39) S73P possibly damaging Het
Prr27 A C 5: 87,998,825 (GRCm39) probably benign Het
Rad54b G T 4: 11,599,753 (GRCm39) W319L probably damaging Het
Rassf8 T A 6: 145,762,276 (GRCm39) L349H probably damaging Het
Rmc1 G T 18: 12,318,836 (GRCm39) probably benign Het
Rnf113a2 T A 12: 84,464,388 (GRCm39) N93K probably benign Het
Sapcd2 C T 2: 25,262,768 (GRCm39) A109V probably benign Het
Slamf9 C A 1: 172,304,008 (GRCm39) H118N probably benign Het
Slc37a1 A G 17: 31,541,147 (GRCm39) Y213C probably damaging Het
Slc5a1 A G 5: 33,316,494 (GRCm39) D580G probably benign Het
Slc7a2 T A 8: 41,364,083 (GRCm39) I432N probably damaging Het
Tas2r114 A T 6: 131,666,800 (GRCm39) L76Q probably damaging Het
Tcerg1 C T 18: 42,668,180 (GRCm39) P391L unknown Het
Tdrd12 A C 7: 35,203,582 (GRCm39) V314G probably benign Het
Zbtb7b A G 3: 89,288,080 (GRCm39) L246S probably benign 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
R4828:Ext2 UTSW 2 93,626,112 (GRCm39) missense probably benign 0.08
R4936:Ext2 UTSW 2 93,644,024 (GRCm39) nonsense probably null
R5311:Ext2 UTSW 2 93,526,606 (GRCm39) missense probably benign 0.04
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'- TGTTCATCTGAGACAGCAGC -3'
(R):5'- GCGACAACTCTGTGTACTTCC -3'

Sequencing Primer
(F):5'- GTTCATCTGAGACAGCAGCATTTC -3'
(R):5'- TGACTGCCATCTGATACAGCTGG -3'
Posted On 2016-03-01