Incidental Mutation 'R5799:Ext2'
ID 447382
Institutional Source Beutler Lab
Gene Symbol Ext2
Ensembl Gene ENSMUSG00000027198
Gene Name exostosin glycosyltransferase 2
Synonyms
MMRRC Submission 043388-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R5799 (G1)
Quality Score 225
Status Validated
Chromosome 2
Chromosomal Location 93525978-93652913 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) G to T at 93642317 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Threonine to Lysine at position 184 (T184K)
Ref Sequence ENSEMBL: ENSMUSP00000120291 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000028623] [ENSMUST00000111248] [ENSMUST00000125407] [ENSMUST00000145838] [ENSMUST00000184931]
AlphaFold P70428
Predicted Effect probably benign
Transcript: ENSMUST00000028623
AA Change: T184K

PolyPhen 2 Score 0.001 (Sensitivity: 0.99; Specificity: 0.15)
SMART Domains Protein: ENSMUSP00000028623
Gene: ENSMUSG00000027198
AA Change: T184K

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: ENSMUST00000111248
SMART Domains Protein: ENSMUSP00000106879
Gene: ENSMUSG00000027198

DomainStartEndE-ValueType
transmembrane domain 24 46 N/A INTRINSIC
Predicted Effect noncoding transcript
Transcript: ENSMUST00000123649
Predicted Effect noncoding transcript
Transcript: ENSMUST00000125027
Predicted Effect probably benign
Transcript: ENSMUST00000125407
AA Change: T184K

PolyPhen 2 Score 0.009 (Sensitivity: 0.96; Specificity: 0.77)
SMART Domains Protein: ENSMUSP00000120291
Gene: ENSMUSG00000027198
AA Change: T184K

DomainStartEndE-ValueType
transmembrane domain 24 46 N/A INTRINSIC
Pfam:Exostosin 100 380 8.8e-59 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000145838
AA Change: T184K

PolyPhen 2 Score 0.003 (Sensitivity: 0.98; Specificity: 0.44)
SMART Domains Protein: ENSMUSP00000122144
Gene: ENSMUSG00000027198
AA Change: T184K

DomainStartEndE-ValueType
transmembrane domain 24 46 N/A INTRINSIC
Pfam:Exostosin 100 213 2.5e-17 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000157046
Predicted Effect probably benign
Transcript: ENSMUST00000184931
AA Change: T184K

PolyPhen 2 Score 0.004 (Sensitivity: 0.98; Specificity: 0.59)
SMART Domains Protein: ENSMUSP00000138956
Gene: ENSMUSG00000027198
AA Change: T184K

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 0.3494 question?
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.8%
  • 10x: 97.5%
  • 20x: 95.9%
Validation Efficiency 89% (51/57)
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: 51 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
AA986860 C T 1: 130,668,908 (GRCm39) Q92* probably null Het
Accsl T C 2: 93,694,748 (GRCm39) probably null Het
Ahnak2 T C 12: 112,745,365 (GRCm39) probably benign Het
Alcam T C 16: 52,130,212 (GRCm39) D46G probably benign Het
Asap2 T C 12: 21,218,247 (GRCm39) S57P probably damaging Het
Atg14 A T 14: 47,784,752 (GRCm39) V314D possibly damaging Het
C230029F24Rik C T 1: 49,377,307 (GRCm39) noncoding transcript Het
Calcr A T 6: 3,707,592 (GRCm39) I236N probably benign Het
Cass4 G A 2: 172,258,107 (GRCm39) G35E probably damaging Het
Chmp6 T C 11: 119,807,517 (GRCm39) I120T probably benign Het
Col13a1 A G 10: 61,684,919 (GRCm39) probably benign Het
Cstdc4 T A 16: 36,004,631 (GRCm39) M1K probably null Het
Ddhd2 T A 8: 26,238,629 (GRCm39) L328F probably damaging Het
Defa40 T A 8: 21,740,359 (GRCm39) probably null Het
Dnmt3l A G 10: 77,887,860 (GRCm39) D123G possibly damaging Het
Eea1 T A 10: 95,838,810 (GRCm39) V287E possibly damaging Het
Efcc1 A G 6: 87,708,164 (GRCm39) N97S probably benign Het
Exd1 A G 2: 119,369,262 (GRCm39) S118P probably benign Het
Fam186a G A 15: 99,864,705 (GRCm39) Q42* probably null Het
Gbp2 A T 3: 142,337,843 (GRCm39) I320L probably benign Het
Gramd2a G A 9: 59,615,299 (GRCm39) G13R probably benign Het
H2-Q5 T C 17: 35,613,115 (GRCm39) M5T unknown Het
Jak3 C T 8: 72,131,344 (GRCm39) L70F probably damaging Het
Lhpp G A 7: 132,307,364 (GRCm39) V254M probably damaging Het
Lig1 T A 7: 13,030,184 (GRCm39) V387E possibly damaging Het
Lipo3 T C 19: 33,755,093 (GRCm39) probably benign Het
Lrrc8b C T 5: 105,629,208 (GRCm39) S518L probably benign Het
Narf T C 11: 121,135,480 (GRCm39) Y111H probably damaging Het
Ncf4 A G 15: 78,135,177 (GRCm39) K78R probably benign Het
Nrap A T 19: 56,330,601 (GRCm39) C1118* probably null Het
Nubp2 A G 17: 25,104,772 (GRCm39) V23A probably damaging Het
Or4l1 A T 14: 50,166,497 (GRCm39) F168Y probably damaging Het
Or6c219 A T 10: 129,781,780 (GRCm39) D50E possibly damaging Het
Or8g55 T C 9: 39,785,392 (GRCm39) S274P possibly damaging Het
Pdzd7 G A 19: 45,025,428 (GRCm39) P356S probably benign Het
Rttn T C 18: 89,056,070 (GRCm39) V984A probably damaging Het
Ryr3 A G 2: 112,516,925 (GRCm39) S3334P probably damaging Het
Senp7 G A 16: 55,959,468 (GRCm39) probably null Het
Slc25a3 A C 10: 90,957,903 (GRCm39) Y50D probably benign Het
Slc35e2 C T 4: 155,694,483 (GRCm39) P10L probably benign Het
Slc38a2 A T 15: 96,592,970 (GRCm39) S163T probably benign Het
Sp110 A C 1: 85,505,050 (GRCm39) F434C probably benign Het
Stam2 A T 2: 52,610,922 (GRCm39) C4* probably null Het
Taf1a A G 1: 183,177,272 (GRCm39) D50G possibly damaging Het
Taf6l A T 19: 8,759,995 (GRCm39) Y106N possibly damaging Het
Taf7l2 T C 10: 115,948,674 (GRCm39) E284G probably damaging Het
Tbx20 G A 9: 24,636,816 (GRCm39) Q424* probably null Het
Tex10 A G 4: 48,433,295 (GRCm39) V829A possibly damaging Het
Tgfbr3 T C 5: 107,257,474 (GRCm39) probably benign Het
Tnfsf10 G T 3: 27,389,742 (GRCm39) V268F probably damaging Het
Trrap A G 5: 144,767,755 (GRCm39) T2571A 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
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'- TATATCCCAGCAGGCTCAGG -3'
(R):5'- GCAGACAAGCTGGAAGTATACATC -3'

Sequencing Primer
(F):5'- ACTTTGTAGACCAAGCTGGC -3'
(R):5'- TCTAATTTTGTATTTGTCCCTTTGGG -3'
Posted On 2016-12-15