Incidental Mutation 'R6230:Ext2'
ID 504601
Institutional Source Beutler Lab
Gene Symbol Ext2
Ensembl Gene ENSMUSG00000027198
Gene Name exostosin glycosyltransferase 2
Synonyms
MMRRC Submission 044359-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R6230 (G1)
Quality Score 225.009
Status Validated
Chromosome 2
Chromosomal Location 93525978-93652913 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to G at 93592965 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Isoleucine to Threonine at position 413 (I413T)
Ref Sequence ENSEMBL: ENSMUSP00000138956 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000028623] [ENSMUST00000125407] [ENSMUST00000184931]
AlphaFold P70428
Predicted Effect probably damaging
Transcript: ENSMUST00000028623
AA Change: I413T

PolyPhen 2 Score 0.988 (Sensitivity: 0.73; Specificity: 0.96)
SMART Domains Protein: ENSMUSP00000028623
Gene: ENSMUSG00000027198
AA Change: I413T

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 damaging
Transcript: ENSMUST00000184931
AA Change: I413T

PolyPhen 2 Score 0.999 (Sensitivity: 0.14; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000138956
Gene: ENSMUSG00000027198
AA Change: I413T

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: 99.9%
  • 3x: 99.7%
  • 10x: 98.4%
  • 20x: 95.1%
Validation Efficiency 100% (49/49)
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: 49 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adnp T C 2: 168,024,452 (GRCm39) T948A probably benign Het
Arhgef12 T C 9: 42,900,261 (GRCm39) I871V probably benign Het
Atf1 T C 15: 100,130,705 (GRCm39) V25A possibly damaging Het
Atp23 G A 10: 126,723,431 (GRCm39) H224Y probably benign Het
Ccpg1 A G 9: 72,919,638 (GRCm39) T418A probably benign Het
Col27a1 T C 4: 63,142,519 (GRCm39) I69T probably damaging Het
Cspp1 T C 1: 10,147,422 (GRCm39) S328P probably benign Het
Cttnbp2nl C T 3: 104,918,655 (GRCm39) E62K probably damaging Het
Cyp2c39 T C 19: 39,525,246 (GRCm39) F183S probably damaging Het
Dync2li1 T C 17: 84,955,078 (GRCm39) S246P probably damaging Het
Fam174a T C 1: 95,241,951 (GRCm39) V137A probably damaging Het
Flg T A 3: 93,186,782 (GRCm39) V78E probably damaging Het
Fn3krp C A 11: 121,316,418 (GRCm39) H111N probably damaging Het
Focad T C 4: 88,260,441 (GRCm39) I899T unknown Het
Foxq1 T C 13: 31,743,491 (GRCm39) Y198H probably damaging Het
Gm21060 A T 19: 61,285,449 (GRCm39) M20K probably benign Het
Kif16b A T 2: 142,691,832 (GRCm39) N217K probably damaging Het
Klkb1 A G 8: 45,736,252 (GRCm39) Y162H probably benign Het
Kntc1 T A 5: 123,927,072 (GRCm39) probably null Het
Madd C T 2: 90,973,866 (GRCm39) probably null Het
Mast2 T A 4: 116,183,295 (GRCm39) H258L probably damaging Het
Musk T C 4: 58,367,576 (GRCm39) V598A probably damaging Het
Nexn T A 3: 151,943,912 (GRCm39) Q539L probably damaging Het
Nf2 T C 11: 4,758,262 (GRCm39) K130E possibly damaging Het
Nlrp14 A T 7: 106,781,024 (GRCm39) I74F probably benign Het
Omg T C 11: 79,393,784 (GRCm39) I25V probably benign Het
Or56b35 A G 7: 104,963,289 (GRCm39) H26R possibly damaging Het
Or8b54 T G 9: 38,687,073 (GRCm39) I174S possibly damaging Het
Parp4 A G 14: 56,844,990 (GRCm39) D627G probably damaging Het
Pdia6 A G 12: 17,327,214 (GRCm39) E126G probably benign Het
Ppp1r2 T A 16: 31,079,418 (GRCm39) D127V possibly damaging Het
Pramel17 T A 4: 101,694,411 (GRCm39) E157D probably damaging Het
Rgs22 A G 15: 36,100,176 (GRCm39) S304P probably benign Het
Rnd2 C T 11: 101,359,825 (GRCm39) L57F probably damaging Het
Rptn C G 3: 93,305,437 (GRCm39) H923Q possibly damaging Het
Ryr2 T C 13: 11,674,993 (GRCm39) Y3378C probably damaging Het
Shoc1 T C 4: 59,099,345 (GRCm39) N116D probably benign Het
Slitrk5 GACTAC GACTACTAC 14: 111,917,248 (GRCm39) probably benign Het
Smurf2 T C 11: 106,759,330 (GRCm39) probably null Het
Tanc1 T C 2: 59,672,375 (GRCm39) F1348L probably damaging Het
Tars3 A T 7: 65,336,184 (GRCm39) probably null Het
Tmem213 A T 6: 38,091,551 (GRCm39) S52C probably damaging Het
Ttn T C 2: 76,749,778 (GRCm39) D3757G probably benign Het
Usp16 C T 16: 87,261,686 (GRCm39) P101S possibly damaging Het
Usp19 G A 9: 108,379,140 (GRCm39) M1318I probably damaging Het
Vmn1r75 G A 7: 11,614,966 (GRCm39) A233T probably damaging Het
Vsir A T 10: 60,193,857 (GRCm39) N107Y probably damaging Het
Zfp160 T C 17: 21,246,707 (GRCm39) V419A probably benign Het
Zfp808 A T 13: 62,320,136 (GRCm39) H455L 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
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
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
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'- CAGGACTTAGCTGACCTTTCATG -3'
(R):5'- ATACAGCTGGTGTGGCAGAG -3'

Sequencing Primer
(F):5'- AGCTGACCTTTCATGACATTTACTG -3'
(R):5'- TGTGGCAGAGGGAGCACC -3'
Posted On 2018-02-28