Mutagenetix > Incidental Mutation

Incidental Mutation 'R9072:Ext2'

700785

Institutional Source

Beutler Lab

Gene Symbol

Ext2

Ensembl Gene

ENSMUSG00000027198

Gene Name

exostosin glycosyltransferase 2

Synonyms

MMRRC Submission

068894-MU

Accession Numbers

Essential gene?

Essential (E-score: 1.000) question?

Stock #

R9072 (G1)

Quality Score

225.009

Status

Validated

Chromosome

Chromosomal Location

93525978-93652913 bp(-) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

A to G at 93644144 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Tryptophan to Arginine at position 46 (W46R)

Ref Sequence

ENSEMBL: ENSMUSP00000028623 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000028623] [ENSMUST00000111248] [ENSMUST00000125407] [ENSMUST00000145838] [ENSMUST00000184931]

AlphaFold

P70428

Predicted Effect

probably benign
Transcript: ENSMUST00000028623
AA Change: W46R

PolyPhen 2 Score 0.279 (Sensitivity: 0.91; Specificity: 0.88)

SMART Domains

Protein: ENSMUSP00000028623
Gene: ENSMUSG00000027198
AA Change: W46R

Domain	Start	End	E-Value	Type
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
AA Change: W46R

PolyPhen 2 Score 0.279 (Sensitivity: 0.91; Specificity: 0.88)

SMART Domains

Protein: ENSMUSP00000106879
Gene: ENSMUSG00000027198
AA Change: W46R

Domain	Start	End	E-Value	Type
transmembrane domain	24	46	N/A	INTRINSIC

Predicted Effect

probably damaging
Transcript: ENSMUST00000125407
AA Change: W46R

PolyPhen 2 Score 0.995 (Sensitivity: 0.68; Specificity: 0.97)

SMART Domains

Protein: ENSMUSP00000120291
Gene: ENSMUSG00000027198
AA Change: W46R

Domain	Start	End	E-Value	Type
transmembrane domain	24	46	N/A	INTRINSIC
Pfam:Exostosin	100	380	8.8e-59	PFAM

Predicted Effect

probably benign
Transcript: ENSMUST00000145838
AA Change: W46R

PolyPhen 2 Score 0.279 (Sensitivity: 0.91; Specificity: 0.88)

SMART Domains

Protein: ENSMUSP00000122144
Gene: ENSMUSG00000027198
AA Change: W46R

Domain	Start	End	E-Value	Type
transmembrane domain	24	46	N/A	INTRINSIC
Pfam:Exostosin	100	213	2.5e-17	PFAM

Predicted Effect

probably damaging
Transcript: ENSMUST00000184931
AA Change: W46R

PolyPhen 2 Score 0.975 (Sensitivity: 0.76; Specificity: 0.96)

SMART Domains

Protein: ENSMUSP00000138956
Gene: ENSMUSG00000027198
AA Change: W46R

Domain	Start	End	E-Value	Type
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

0.9136

Coding Region Coverage

1x: 100.0%
3x: 100.0%
10x: 99.8%
20x: 99.4%

Validation Efficiency

100% (63/63)

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: 67 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Abca13	A	C	11: 9,240,834 (GRCm39)	E899A	possibly damaging	Het
Best2	T	A	8: 85,737,418 (GRCm39)	I230F	probably damaging	Het
C2cd2	T	C	16: 97,676,403 (GRCm39)	E448G	probably damaging	Het
C2cd3	T	G	7: 100,040,291 (GRCm39)	S287A	probably benign	Het
Camta2	G	A	11: 70,567,234 (GRCm39)	P677S	probably benign	Het
Cand2	C	T	6: 115,769,490 (GRCm39)	R767C	probably damaging	Het
Celsr3	G	A	9: 108,704,293 (GRCm39)	E259K	probably benign	Het
Cep250	C	G	2: 155,834,035 (GRCm39)	Q1987E	probably benign	Het
Chn1	T	C	2: 73,443,430 (GRCm39)	D440G	probably benign	Het
Cmbl	A	T	15: 31,585,449 (GRCm39)	D111V	possibly damaging	Het
Col5a3	T	A	9: 20,682,453 (GRCm39)	I1664F	unknown	Het
Cp	T	C	3: 20,033,158 (GRCm39)	S662P	possibly damaging	Het
Cpne5	G	A	17: 29,430,677 (GRCm39)	R78C	probably damaging	Het
Cst5	A	G	2: 149,249,261 (GRCm39)	T104A	probably benign	Het
Cyp11b2	A	G	15: 74,725,662 (GRCm39)	F195S	possibly damaging	Het
Dcaf17	T	C	2: 70,920,136 (GRCm39)	Y475H	probably benign	Het
Edem2	G	C	2: 155,571,212 (GRCm39)	L16V	unknown	Het
Eeig1	A	G	2: 32,455,674 (GRCm39)	S267G	probably benign	Het
Gal3st3	T	A	19: 5,352,605 (GRCm39)	S11T	probably benign	Het
Garin5b	A	T	7: 4,762,253 (GRCm39)	H265Q		Het
Gfi1	T	A	5: 107,865,725 (GRCm39)	I451F	possibly damaging	Het
Gfpt2	T	C	11: 49,714,185 (GRCm39)	L314P	probably damaging	Het
Gm3250	A	T	10: 77,618,127 (GRCm39)	C84S	unknown	Het
Hmcn1	A	T	1: 150,565,320 (GRCm39)	V2269E	probably benign	Het
Ighv1-55	T	C	12: 115,172,013 (GRCm39)	H18R	probably benign	Het
Iqgap3	G	A	3: 87,998,883 (GRCm39)	G328E	probably benign	Het
Klf6	G	T	13: 5,917,233 (GRCm39)	C303F	probably benign	Het
Klhl35	A	T	7: 99,122,129 (GRCm39)	S77C	probably damaging	Het
Ktn1	T	G	14: 47,941,694 (GRCm39)	V822G	probably benign	Het
Lbhd2	G	T	12: 111,375,040 (GRCm39)	G21W	probably damaging	Het
Lrp1b	G	A	2: 40,615,457 (GRCm39)	R3649*	probably null	Het
Map2	C	A	1: 66,453,312 (GRCm39)	T734N	probably damaging	Het
Mas1	A	G	17: 13,060,839 (GRCm39)	F195L	possibly damaging	Het
Med1	A	T	11: 98,080,009 (GRCm39)	M44K	possibly damaging	Het
Morc3	T	C	16: 93,667,482 (GRCm39)	V620A	probably benign	Het
Naip2	T	C	13: 100,291,468 (GRCm39)	S1157G	probably benign	Het
Naip2	C	T	13: 100,291,459 (GRCm39)	D1160N	probably benign	Het
Nucb2	T	A	7: 116,125,631 (GRCm39)	I159N	probably damaging	Het
Olfm5	A	G	7: 103,802,984 (GRCm39)	L493P	probably benign	Het
Or1e1	T	G	11: 73,244,797 (GRCm39)	F73V	probably damaging	Het
Or2ag15	A	T	7: 106,340,759 (GRCm39)	C127*	probably null	Het
Or56b1	C	T	7: 104,285,291 (GRCm39)	R137C	probably benign	Het
Pcdhb22	T	A	18: 37,651,813 (GRCm39)	C94S	probably damaging	Het
Pcdhga5	A	G	18: 37,829,537 (GRCm39)	I662V	probably benign	Het
Plcb2	G	A	2: 118,547,878 (GRCm39)	T472M	possibly damaging	Het
Plcb4	A	G	2: 135,849,795 (GRCm39)	E1142G	possibly damaging	Het
Pmm1	C	T	15: 81,839,896 (GRCm39)	R143H	probably damaging	Het
Polr2l	T	C	7: 141,053,285 (GRCm39)	Y43C	probably damaging	Het
Prkcb	T	A	7: 122,127,771 (GRCm39)	N298K	probably benign	Het
Ptar1	T	A	19: 23,695,414 (GRCm39)	C294S	probably benign	Het
Ptprq	T	C	10: 107,401,736 (GRCm39)	I1919V		Het
Slc25a18	C	T	6: 120,769,022 (GRCm39)	R180C	probably benign	Het
Slc27a3	A	C	3: 90,295,768 (GRCm39)	S285R	probably damaging	Het
Smg1	C	T	7: 117,783,032 (GRCm39)	V1092I	unknown	Het
Spata19	T	G	9: 27,309,024 (GRCm39)	I54R	possibly damaging	Het
St6galnac5	T	C	3: 152,551,956 (GRCm39)	T204A	probably benign	Het
Tdpoz8	T	A	3: 92,981,341 (GRCm39)	C46S	probably benign	Het
Trpc3	T	C	3: 36,694,831 (GRCm39)	I708V	probably benign	Het
Ttn	T	C	2: 76,775,183 (GRCm39)	E1999G	unknown	Het
Ube3b	C	T	5: 114,542,607 (GRCm39)	T488M	probably damaging	Het
Vmn1r235	A	T	17: 21,482,271 (GRCm39)	I199F	probably benign	Het
Vsig8	A	T	1: 172,388,340 (GRCm39)	N215Y	possibly damaging	Het
Wapl	A	G	14: 34,399,417 (GRCm39)	K162R	possibly damaging	Het
Wdpcp	A	G	11: 21,614,014 (GRCm39)	T60A	probably benign	Het
Wdr26	A	T	1: 181,010,351 (GRCm39)	I566N	probably damaging	Het
Wdr46	C	T	17: 34,163,555 (GRCm39)	T371M	probably benign	Het
Zdbf2	T	C	1: 63,344,923 (GRCm39)	S1101P	possibly damaging	Het

Other mutations in Ext2

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH 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
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
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'- TCTTTGGGTTGAAGCCGCAG -3'
(R):5'- TCCAATCCACGCAGGGTATTG -3'

Sequencing Primer
(F):5'- CGCAGCGGTAGACATCGAAAC -3'
(R):5'- CAATCCACGCAGGGTATTGATTGC -3'

Posted On

2022-02-07