Incidental Mutation 'R4624:Ext2'
ID346386
Institutional Source Beutler Lab
Gene Symbol Ext2
Ensembl Gene ENSMUSG00000027198
Gene Nameexostoses (multiple) 2
Synonyms
MMRRC Submission 041889-MU
Accession Numbers
Is this an essential gene? Essential (E-score: 1.000) question?
Stock #R4624 (G1)
Quality Score211
Status Validated
Chromosome2
Chromosomal Location93661028-93822568 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) A to G at 93703200 bp
ZygosityHeterozygous
Amino Acid Change Valine to Alanine at position 671 (V671A)
Ref Sequence ENSEMBL: ENSMUSP00000028623 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000028623] [ENSMUST00000125407] [ENSMUST00000144780] [ENSMUST00000184931]
Predicted Effect probably benign
Transcript: ENSMUST00000028623
AA Change: V671A

PolyPhen 2 Score 0.261 (Sensitivity: 0.91; Specificity: 0.88)
SMART Domains Protein: ENSMUSP00000028623
Gene: ENSMUSG00000027198
AA Change: V671A

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 unknown
Transcript: ENSMUST00000132429
AA Change: V97A
SMART Domains Protein: ENSMUSP00000123492
Gene: ENSMUSG00000027198
AA Change: V97A

DomainStartEndE-ValueType
Pfam:Glyco_transf_64 1 100 5.7e-40 PFAM
Predicted Effect noncoding transcript
Transcript: ENSMUST00000139321
Predicted Effect probably benign
Transcript: ENSMUST00000144780
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
Meta Mutation Damage Score 0.1059 question?
Coding Region Coverage
  • 1x: 99.2%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 95.1%
Validation Efficiency 93% (85/91)
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: 79 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
5730409E04Rik A G 4: 126,612,080 T134A possibly damaging Het
Adamts18 C T 8: 113,773,168 W371* probably null Het
Adgb C A 10: 10,403,004 V267L probably benign Het
Akr1c13 G T 13: 4,197,870 V214F probably damaging Het
Alkbh2 C T 5: 114,124,226 E148K probably damaging Het
Ankrd52 A G 10: 128,389,259 H863R probably damaging Het
Ap3b1 A G 13: 94,483,226 R766G unknown Het
Apol7c A G 15: 77,526,395 F117S probably damaging Het
Bcr A T 10: 75,153,920 E716V probably damaging Het
Borcs6 T C 11: 69,060,597 L267P probably damaging Het
Ccdc184 A T 15: 98,168,757 N148Y probably benign Het
Ccdc50 A G 16: 27,436,601 K223R probably null Het
Cd2 T G 3: 101,287,431 K114Q probably benign Het
Cdh19 T C 1: 110,932,251 K167E probably benign Het
Cep131 T C 11: 120,070,832 E558G probably damaging Het
Cmya5 A T 13: 93,063,551 V3423E probably damaging Het
Cnot6l A G 5: 96,077,211 V541A probably benign Het
Cntn5 A T 9: 9,704,804 C663* probably null Het
Dnah12 T C 14: 26,735,758 I893T possibly damaging Het
Dopey1 G A 9: 86,521,525 V129M probably damaging Het
Dyx1c1 A G 9: 72,964,171 I238V probably benign Het
Exoc6b A G 6: 84,854,809 probably benign Het
Fcamr T G 1: 130,803,262 L28R probably damaging Het
Fer1l6 T C 15: 58,553,705 I144T probably damaging Het
Frem1 A G 4: 82,989,106 L839P probably damaging Het
Fscn2 A T 11: 120,367,343 I364F probably benign Het
Gm10291 T C 3: 78,917,274 noncoding transcript Het
Gm29125 T C 1: 80,384,959 noncoding transcript Het
Grin2b T C 6: 135,733,825 M908V probably damaging Het
Helz2 T C 2: 181,239,308 E436G probably damaging Het
Hfe A T 13: 23,706,078 C149* probably null Het
Hs1bp3 T C 12: 8,336,357 V253A probably benign Het
Kat14 A G 2: 144,404,220 probably benign Het
Kcnd3 C T 3: 105,658,766 A421V probably damaging Het
Kcnh3 T A 15: 99,226,372 D47E probably damaging Het
Kcp A G 6: 29,482,814 F1419L possibly damaging Het
Kera A G 10: 97,609,631 N284S probably benign Het
Klhl24 A G 16: 20,120,123 D476G probably damaging Het
Krt79 T A 15: 101,939,806 T137S possibly damaging Het
Lilrb4a A G 10: 51,491,488 Y42C probably damaging Het
Lnx1 C T 5: 74,660,460 probably benign Het
Map3k14 A G 11: 103,231,101 Y497H probably damaging Het
Mut G A 17: 40,947,055 E371K probably damaging Het
Nkx2-6 A G 14: 69,174,926 Q181R probably damaging Het
Notch1 T C 2: 26,478,081 K631R possibly damaging Het
Olfr1436 C T 19: 12,298,983 V50I probably benign Het
Pcdh9 T A 14: 93,886,409 N775I probably damaging Het
Phkb T A 8: 85,848,712 probably benign Het
Pick1 T A 15: 79,246,466 I250N probably damaging Het
Plec T C 15: 76,175,135 E3556G probably damaging Het
Prex2 C T 1: 11,289,265 Q1566* probably null Het
Ptgr2 T G 12: 84,308,354 F287L possibly damaging Het
Ptprv T C 1: 135,124,131 noncoding transcript Het
Rab5b G T 10: 128,683,261 H83Q probably benign Het
Ranbp6 A T 19: 29,810,863 Y696* probably null Het
Rapgef3 G T 15: 97,758,929 D318E probably damaging Het
Rmi1 A G 13: 58,409,136 R400G probably benign Het
Rsrc1 T C 3: 67,349,978 V241A probably damaging Het
Ryr2 A T 13: 12,106,415 I11N possibly damaging Het
S100a11 T C 3: 93,526,014 L55P probably damaging Het
Sec13 A G 6: 113,729,691 S254P probably benign Het
Slc25a36 G A 9: 97,079,125 T147I probably damaging Het
Spata31d1c A G 13: 65,036,597 E651G probably benign Het
Stox2 C A 8: 47,193,816 R203L probably damaging Het
Tbc1d30 A T 10: 121,296,786 D224E probably damaging Het
Tdrd6 A G 17: 43,625,990 L1389P probably damaging Het
Tmprss11b T C 5: 86,665,036 S134G probably benign Het
Tmtc2 A T 10: 105,303,650 S672T probably benign Het
Tnnt1 G A 7: 4,512,268 probably benign Het
Tpst2 A G 5: 112,308,296 M234V probably damaging Het
Ttbk2 T C 2: 120,773,323 D208G probably benign Het
Ube2c A G 2: 164,772,173 N143S possibly damaging Het
Unc45b T A 11: 82,926,009 M425K probably benign Het
Uvssa G A 5: 33,389,956 E289K possibly damaging Het
Vmn2r11 T A 5: 109,052,235 R451W probably damaging Het
Vmn2r45 T C 7: 8,481,342 Y488C probably damaging Het
Vmn2r55 T A 7: 12,670,700 I259F possibly damaging Het
Wdfy3 C T 5: 101,884,083 R2277Q possibly damaging Het
Wdr64 T G 1: 175,772,263 M111R probably benign Het
Other mutations in Ext2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01132:Ext2 APN 2 93791073 missense probably benign
IGL01554:Ext2 APN 2 93811949 missense probably damaging 1.00
IGL01768:Ext2 APN 2 93791110 splice site probably benign
IGL02160:Ext2 APN 2 93813584 missense probably benign
IGL02677:Ext2 APN 2 93707245 missense probably damaging 1.00
IGL02939:Ext2 APN 2 93704619 splice site probably null
IGL03013:Ext2 APN 2 93707226 intron probably benign
IGL03286:Ext2 APN 2 93707272 missense probably damaging 1.00
R0018:Ext2 UTSW 2 93795692 missense probably damaging 1.00
R0526:Ext2 UTSW 2 93806085 missense probably damaging 0.99
R0580:Ext2 UTSW 2 93795725 missense probably benign 0.31
R1383:Ext2 UTSW 2 93806113 missense possibly damaging 0.92
R1538:Ext2 UTSW 2 93707287 missense probably damaging 1.00
R1743:Ext2 UTSW 2 93730225 missense probably damaging 1.00
R1792:Ext2 UTSW 2 93704545 missense probably damaging 1.00
R2874:Ext2 UTSW 2 93739686 missense possibly damaging 0.95
R3122:Ext2 UTSW 2 93813825 missense probably damaging 1.00
R4653:Ext2 UTSW 2 93696159 missense probably benign 0.22
R4826:Ext2 UTSW 2 93762630 missense probably benign 0.15
R4828:Ext2 UTSW 2 93795767 missense probably benign 0.08
R4936:Ext2 UTSW 2 93813679 nonsense probably null
R5311:Ext2 UTSW 2 93696261 missense probably benign 0.04
R5799:Ext2 UTSW 2 93811972 missense probably benign 0.01
R5850:Ext2 UTSW 2 93813659 missense possibly damaging 0.94
R6230:Ext2 UTSW 2 93762620 missense probably damaging 1.00
R6488:Ext2 UTSW 2 93806085 missense probably damaging 0.99
R7047:Ext2 UTSW 2 93739657 missense probably damaging 0.99
R7173:Ext2 UTSW 2 93813612 missense probably damaging 1.00
R7391:Ext2 UTSW 2 93730267 missense probably damaging 1.00
R7530:Ext2 UTSW 2 93661653 missense probably benign 0.00
R7545:Ext2 UTSW 2 93813763 missense probably benign
Z1177:Ext2 UTSW 2 93703275 critical splice acceptor site probably benign
Predicted Primers PCR Primer
(F):5'- AGCCATTACAAATTGAGTGAGTAGC -3'
(R):5'- ACGCAGAGTGCACAAGCTAC -3'

Sequencing Primer
(F):5'- GCATCCCAAATTAATTCGCTGGG -3'
(R):5'- GAGTGCACAAGCTACTCCTG -3'
Posted On2015-09-25