Mutagenetix > Incidental Mutation

Incidental Mutation 'P0005:Itpr1'

7613

Institutional Source

Beutler Lab

Gene Symbol

Itpr1

Ensembl Gene

ENSMUSG00000030102

Gene Name

inositol 1,4,5-trisphosphate receptor 1

Synonyms

opt, IP3R1, P400, wblo, Ip3r, Pcp-1, Itpr-1, InsP3R type I, Pcp1

MMRRC Submission

038262-MU

Accession Numbers

Essential gene?

Possibly essential (E-score: 0.699) question?

Stock #

P0005 (G1)

Quality Score

Status

Validated

Chromosome

Chromosomal Location

108190057-108528070 bp(+) (GRCm39)

Type of Mutation

missense

DNA Base Change (assembly)

A to T at 108358218 bp (GRCm39)

Zygosity

Heterozygous

Amino Acid Change

Isoleucine to Phenylalanine at position 595 (I595F)

Ref Sequence

ENSEMBL: ENSMUSP00000144880 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000032192] [ENSMUST00000203615] [ENSMUST00000203936]

AlphaFold

no structure available at present

Predicted Effect

probably damaging
Transcript: ENSMUST00000032192
AA Change: I595F

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)

SMART Domains

Protein: ENSMUSP00000032192
Gene: ENSMUSG00000030102
AA Change: I595F

Domain	Start	End	E-Value	Type
MIR	112	166	7.99e-8	SMART
MIR	173	223	1.02e-5	SMART
MIR	231	287	2.33e-9	SMART
MIR	294	403	5.95e-16	SMART
Pfam:RYDR_ITPR	474	670	2.3e-61	PFAM
low complexity region	683	695	N/A	INTRINSIC
low complexity region	884	895	N/A	INTRINSIC
low complexity region	1004	1020	N/A	INTRINSIC
Pfam:RYDR_ITPR	1183	1344	1.9e-14	PFAM
low complexity region	1758	1787	N/A	INTRINSIC
Pfam:RIH_assoc	1959	2069	1.2e-33	PFAM
transmembrane domain	2274	2296	N/A	INTRINSIC
Pfam:Ion_trans	2311	2600	9e-22	PFAM
coiled coil region	2683	2732	N/A	INTRINSIC

Predicted Effect

probably damaging
Transcript: ENSMUST00000203615
AA Change: I595F

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)

SMART Domains

Protein: ENSMUSP00000144880
Gene: ENSMUSG00000030102
AA Change: I595F

Domain	Start	End	E-Value	Type
MIR	112	166	7.99e-8	SMART
MIR	173	223	1.02e-5	SMART
MIR	231	287	2.33e-9	SMART
MIR	294	403	5.95e-16	SMART
Pfam:RYDR_ITPR	474	670	2.3e-61	PFAM
low complexity region	683	695	N/A	INTRINSIC
low complexity region	884	895	N/A	INTRINSIC
low complexity region	1004	1020	N/A	INTRINSIC
Pfam:RYDR_ITPR	1183	1344	1.9e-14	PFAM
low complexity region	1757	1786	N/A	INTRINSIC
Pfam:RIH_assoc	1958	2068	1.2e-33	PFAM
transmembrane domain	2273	2295	N/A	INTRINSIC
Pfam:Ion_trans	2310	2599	9e-22	PFAM
coiled coil region	2682	2731	N/A	INTRINSIC

Predicted Effect

probably benign
Transcript: ENSMUST00000203936

SMART Domains

Protein: ENSMUSP00000145526
Gene: ENSMUSG00000030102

Domain	Start	End	E-Value	Type
MIR	5	61	1.3e-11	SMART
MIR	68	162	1.6e-13	SMART

Predicted Effect

noncoding transcript
Transcript: ENSMUST00000203995

Meta Mutation Damage Score

0.9180

Coding Region Coverage

1x: 85.5%
3x: 80.5%
10x: 66.1%
20x: 49.6%

Validation Efficiency

95% (104/109)

MGI Phenotype

FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes an intracellular receptor for inositol 1,4,5-trisphosphate. Upon stimulation by inositol 1,4,5-trisphosphate, this receptor mediates calcium release from the endoplasmic reticulum. Mutations in this gene cause spinocerebellar ataxia type 15, a disease associated with an heterogeneous group of cerebellar disorders. Multiple transcript variants have been identified for this gene. [provided by RefSeq, Nov 2009]
PHENOTYPE: Most homozygotes for a targeted null mutation die in utero, while survivors exhibit severe ataxia, seizures, and lethality by weaning age. Homozygotes for a spontaneous mutation exhibit a postnatal phenotype similar to that of knockout mutants. [provided by MGI curators]

Allele List at MGI

All alleles(71) : Targeted(2) Gene trapped(67) Spontaneous(2)

Other mutations in this stock

Total: 20 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Atp13a1	T	C	8: 70,256,397 (GRCm39)	V845A	possibly damaging	Het
Casp6	T	C	3: 129,705,792 (GRCm39)	V153A	probably benign	Het
Col6a1	A	G	10: 76,553,163 (GRCm39)		probably benign	Het
Dars2	A	G	1: 160,881,509 (GRCm39)		probably null	Het
Hmgcll1	T	A	9: 75,982,041 (GRCm39)	M162K	possibly damaging	Het
Hydin	A	T	8: 111,220,921 (GRCm39)		probably null	Het
Ift74	A	G	4: 94,550,813 (GRCm39)		probably benign	Het
Mgat4f	T	A	1: 134,315,646 (GRCm39)	M15K	probably benign	Het
Mmp17	T	C	5: 129,673,695 (GRCm39)	V258A	probably benign	Het
Nek6	T	C	2: 38,459,749 (GRCm39)		probably null	Het
Nomo1	A	T	7: 45,686,981 (GRCm39)		probably null	Het
Nudt3	A	G	17: 27,815,689 (GRCm39)		probably benign	Het
Pramel32	A	G	4: 88,546,187 (GRCm39)	L385P	probably damaging	Het
Prkg2	A	C	5: 99,117,806 (GRCm39)	F512V	probably damaging	Het
Ptp4a3	T	A	15: 73,627,160 (GRCm39)	D72E	possibly damaging	Het
Rpgrip1l	A	T	8: 92,025,853 (GRCm39)		probably benign	Het
Rrp9	G	A	9: 106,358,376 (GRCm39)	R101H	probably benign	Het
Slc7a6os	T	C	8: 106,931,154 (GRCm39)	I161V	probably benign	Het
Tex15	T	C	8: 34,060,896 (GRCm39)	F109L	probably benign	Het
Tns2	A	G	15: 102,022,491 (GRCm39)	Q1188R	probably damaging	Het

Other mutations in Itpr1

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL00979:Itpr1	APN	6	108,448,081 (GRCm39)	missense	probably damaging	0.98
IGL01073:Itpr1	APN	6	108,390,781 (GRCm39)	missense	probably benign	0.00
IGL01105:Itpr1	APN	6	108,358,294 (GRCm39)	missense	probably benign	0.00
IGL01296:Itpr1	APN	6	108,376,322 (GRCm39)	missense	probably damaging	1.00
IGL01325:Itpr1	APN	6	108,358,169 (GRCm39)	missense	probably benign	0.01
IGL01418:Itpr1	APN	6	108,316,585 (GRCm39)	critical splice donor site	probably null
IGL01464:Itpr1	APN	6	108,363,688 (GRCm39)	missense	possibly damaging	0.95
IGL01467:Itpr1	APN	6	108,465,457 (GRCm39)	missense	probably damaging	0.96
IGL01645:Itpr1	APN	6	108,450,560 (GRCm39)	missense	possibly damaging	0.91
IGL01672:Itpr1	APN	6	108,357,993 (GRCm39)	nonsense	probably null
IGL01969:Itpr1	APN	6	108,354,652 (GRCm39)	missense	probably damaging	1.00
IGL02164:Itpr1	APN	6	108,366,444 (GRCm39)	missense	probably benign	0.08
IGL02206:Itpr1	APN	6	108,526,781 (GRCm39)	missense	probably damaging	1.00
IGL02232:Itpr1	APN	6	108,394,884 (GRCm39)	missense	probably damaging	1.00
IGL02297:Itpr1	APN	6	108,316,478 (GRCm39)	missense	possibly damaging	0.84
IGL02434:Itpr1	APN	6	108,466,883 (GRCm39)	splice site	probably null
IGL02568:Itpr1	APN	6	108,316,515 (GRCm39)	missense	possibly damaging	0.82
IGL02992:Itpr1	APN	6	108,358,276 (GRCm39)	missense	probably damaging	1.00
IGL03109:Itpr1	APN	6	108,394,942 (GRCm39)	missense	probably damaging	1.00
IGL03130:Itpr1	APN	6	108,500,362 (GRCm39)	missense	probably benign	0.00
IGL03333:Itpr1	APN	6	108,357,871 (GRCm39)	unclassified	probably benign
aboriginal	UTSW	6	108,492,908 (GRCm39)	missense	probably benign
approximation	UTSW	6	108,371,802 (GRCm39)	missense	probably benign
estimate	UTSW	6	108,366,514 (GRCm39)	missense	probably null	1.00
icarus	UTSW	6	108,387,861 (GRCm39)	missense	probably damaging	1.00
marsupialized	UTSW	6	108,371,034 (GRCm39)	splice site	probably null
primordial	UTSW	6	108,495,716 (GRCm39)	missense	probably benign	0.06
roo	UTSW	6	108,387,828 (GRCm39)	missense	probably benign	0.00
wallaby	UTSW	6	108,366,348 (GRCm39)	missense	probably damaging	1.00
PIT4366001:Itpr1	UTSW	6	108,470,718 (GRCm39)	nonsense	probably null
R0019:Itpr1	UTSW	6	108,331,587 (GRCm39)	missense	probably damaging	1.00
R0128:Itpr1	UTSW	6	108,448,170 (GRCm39)	splice site	probably benign
R0129:Itpr1	UTSW	6	108,326,637 (GRCm39)	missense	probably damaging	1.00
R0135:Itpr1	UTSW	6	108,465,443 (GRCm39)	splice site	probably benign
R0244:Itpr1	UTSW	6	108,450,550 (GRCm39)	missense	probably benign	0.00
R0391:Itpr1	UTSW	6	108,355,128 (GRCm39)	missense	probably benign	0.22
R0543:Itpr1	UTSW	6	108,492,709 (GRCm39)	splice site	probably benign
R0647:Itpr1	UTSW	6	108,360,659 (GRCm39)	missense	probably damaging	1.00
R0766:Itpr1	UTSW	6	108,387,861 (GRCm39)	missense	probably damaging	1.00
R0971:Itpr1	UTSW	6	108,326,590 (GRCm39)	missense	possibly damaging	0.70
R1083:Itpr1	UTSW	6	108,487,657 (GRCm39)	missense	possibly damaging	0.92
R1277:Itpr1	UTSW	6	108,316,582 (GRCm39)	missense	probably benign	0.22
R1403:Itpr1	UTSW	6	108,366,514 (GRCm39)	missense	probably null	1.00
R1403:Itpr1	UTSW	6	108,366,514 (GRCm39)	missense	probably null	1.00
R1404:Itpr1	UTSW	6	108,363,609 (GRCm39)	missense	probably benign	0.04
R1404:Itpr1	UTSW	6	108,363,609 (GRCm39)	missense	probably benign	0.04
R1605:Itpr1	UTSW	6	108,326,620 (GRCm39)	missense	possibly damaging	0.77
R1661:Itpr1	UTSW	6	108,459,858 (GRCm39)	missense	probably benign	0.38
R1852:Itpr1	UTSW	6	108,363,667 (GRCm39)	missense	probably damaging	1.00
R1929:Itpr1	UTSW	6	108,470,716 (GRCm39)	missense	probably damaging	1.00
R2012:Itpr1	UTSW	6	108,417,497 (GRCm39)	missense	probably benign	0.02
R2027:Itpr1	UTSW	6	108,363,814 (GRCm39)	missense	possibly damaging	0.80
R2111:Itpr1	UTSW	6	108,355,270 (GRCm39)	unclassified	probably benign
R2166:Itpr1	UTSW	6	108,365,186 (GRCm39)	missense	probably damaging	1.00
R2272:Itpr1	UTSW	6	108,470,716 (GRCm39)	missense	probably damaging	1.00
R2484:Itpr1	UTSW	6	108,346,071 (GRCm39)	missense	probably damaging	1.00
R3115:Itpr1	UTSW	6	108,383,070 (GRCm39)	missense	possibly damaging	0.55
R3751:Itpr1	UTSW	6	108,326,641 (GRCm39)	missense	probably damaging	1.00
R3798:Itpr1	UTSW	6	108,358,231 (GRCm39)	missense	probably damaging	1.00
R3930:Itpr1	UTSW	6	108,371,802 (GRCm39)	missense	probably benign
R4081:Itpr1	UTSW	6	108,368,796 (GRCm39)	missense	probably damaging	1.00
R4119:Itpr1	UTSW	6	108,371,316 (GRCm39)	missense	probably benign
R4406:Itpr1	UTSW	6	108,331,624 (GRCm39)	missense	probably damaging	1.00
R4506:Itpr1	UTSW	6	108,409,647 (GRCm39)	missense	probably damaging	1.00
R4616:Itpr1	UTSW	6	108,458,184 (GRCm39)	missense	probably damaging	1.00
R4655:Itpr1	UTSW	6	108,458,254 (GRCm39)	missense	probably damaging	1.00
R4661:Itpr1	UTSW	6	108,387,892 (GRCm39)	critical splice donor site	probably null
R4760:Itpr1	UTSW	6	108,326,593 (GRCm39)	missense	probably benign	0.29
R4836:Itpr1	UTSW	6	108,366,498 (GRCm39)	missense	probably damaging	0.99
R4857:Itpr1	UTSW	6	108,387,828 (GRCm39)	missense	probably benign	0.00
R4876:Itpr1	UTSW	6	108,459,867 (GRCm39)	missense	probably damaging	0.97
R4939:Itpr1	UTSW	6	108,417,519 (GRCm39)	nonsense	probably null
R5076:Itpr1	UTSW	6	108,382,490 (GRCm39)	splice site	probably null
R5088:Itpr1	UTSW	6	108,366,348 (GRCm39)	missense	probably damaging	1.00
R5248:Itpr1	UTSW	6	108,519,023 (GRCm39)	missense	probably damaging	1.00
R5290:Itpr1	UTSW	6	108,383,106 (GRCm39)	missense	possibly damaging	0.95
R5308:Itpr1	UTSW	6	108,333,472 (GRCm39)	missense	probably damaging	1.00
R5339:Itpr1	UTSW	6	108,370,922 (GRCm39)	missense	probably damaging	1.00
R5368:Itpr1	UTSW	6	108,364,459 (GRCm39)	missense	probably damaging	1.00
R5369:Itpr1	UTSW	6	108,496,385 (GRCm39)	missense	probably damaging	0.99
R5419:Itpr1	UTSW	6	108,470,755 (GRCm39)	missense	possibly damaging	0.95
R5615:Itpr1	UTSW	6	108,465,561 (GRCm39)	missense	possibly damaging	0.71
R5779:Itpr1	UTSW	6	108,329,104 (GRCm39)	missense	probably damaging	1.00
R5781:Itpr1	UTSW	6	108,487,699 (GRCm39)	missense	probably benign	0.23
R5869:Itpr1	UTSW	6	108,450,490 (GRCm39)	missense	probably benign	0.30
R5903:Itpr1	UTSW	6	108,466,758 (GRCm39)	intron	probably benign
R5929:Itpr1	UTSW	6	108,400,297 (GRCm39)	missense	probably benign
R5956:Itpr1	UTSW	6	108,482,988 (GRCm39)	missense	probably benign	0.25
R6160:Itpr1	UTSW	6	108,495,716 (GRCm39)	missense	probably benign	0.06
R6163:Itpr1	UTSW	6	108,365,245 (GRCm39)	missense	probably damaging	1.00
R6169:Itpr1	UTSW	6	108,346,077 (GRCm39)	missense	probably damaging	1.00
R6237:Itpr1	UTSW	6	108,355,164 (GRCm39)	missense	possibly damaging	0.53
R6398:Itpr1	UTSW	6	108,482,864 (GRCm39)	missense	probably damaging	0.96
R6455:Itpr1	UTSW	6	108,394,933 (GRCm39)	missense	probably damaging	1.00
R6522:Itpr1	UTSW	6	108,365,237 (GRCm39)	missense	probably damaging	1.00
R6524:Itpr1	UTSW	6	108,340,644 (GRCm39)	missense	probably damaging	1.00
R6650:Itpr1	UTSW	6	108,371,034 (GRCm39)	splice site	probably null
R6806:Itpr1	UTSW	6	108,492,908 (GRCm39)	missense	probably benign
R6838:Itpr1	UTSW	6	108,448,152 (GRCm39)	missense	possibly damaging	0.87
R6841:Itpr1	UTSW	6	108,365,153 (GRCm39)	missense	probably damaging	1.00
R6896:Itpr1	UTSW	6	108,458,355 (GRCm39)	missense	probably damaging	1.00
R7014:Itpr1	UTSW	6	108,408,459 (GRCm39)	critical splice donor site	probably null
R7076:Itpr1	UTSW	6	108,365,257 (GRCm39)	missense	probably benign
R7116:Itpr1	UTSW	6	108,458,229 (GRCm39)	missense	probably damaging	0.99
R7152:Itpr1	UTSW	6	108,371,368 (GRCm39)	critical splice donor site	probably null
R7161:Itpr1	UTSW	6	108,363,601 (GRCm39)	missense	probably damaging	1.00
R7166:Itpr1	UTSW	6	108,355,151 (GRCm39)	missense	probably benign	0.06
R7241:Itpr1	UTSW	6	108,494,581 (GRCm39)	critical splice donor site	probably null
R7301:Itpr1	UTSW	6	108,518,985 (GRCm39)	missense	possibly damaging	0.86
R7330:Itpr1	UTSW	6	108,415,292 (GRCm39)	missense	probably benign	0.28
R7449:Itpr1	UTSW	6	108,366,345 (GRCm39)	missense	probably damaging	0.98
R7472:Itpr1	UTSW	6	108,380,357 (GRCm39)	missense	probably benign	0.05
R7502:Itpr1	UTSW	6	108,360,639 (GRCm39)	missense	probably benign	0.00
R7779:Itpr1	UTSW	6	108,500,309 (GRCm39)	missense	possibly damaging	0.75
R7828:Itpr1	UTSW	6	108,459,892 (GRCm39)	missense	probably damaging	1.00
R7854:Itpr1	UTSW	6	108,364,330 (GRCm39)	missense	probably damaging	1.00
R7974:Itpr1	UTSW	6	108,500,366 (GRCm39)	missense	possibly damaging	0.86
R7998:Itpr1	UTSW	6	108,394,909 (GRCm39)	missense	possibly damaging	0.88
R8039:Itpr1	UTSW	6	108,363,589 (GRCm39)	missense	probably damaging	1.00
R8136:Itpr1	UTSW	6	108,415,321 (GRCm39)	missense	probably benign	0.18
R8200:Itpr1	UTSW	6	108,371,826 (GRCm39)	missense	probably benign	0.00
R8242:Itpr1	UTSW	6	108,363,658 (GRCm39)	missense	probably benign	0.44
R8322:Itpr1	UTSW	6	108,365,190 (GRCm39)	missense	probably benign	0.05
R8377:Itpr1	UTSW	6	108,487,699 (GRCm39)	missense	probably benign	0.00
R8412:Itpr1	UTSW	6	108,340,581 (GRCm39)	missense	probably benign	0.07
R8443:Itpr1	UTSW	6	108,496,309 (GRCm39)	missense	probably damaging	0.99
R8669:Itpr1	UTSW	6	108,370,928 (GRCm39)	missense	probably damaging	0.99
R8697:Itpr1	UTSW	6	108,500,327 (GRCm39)	missense	probably damaging	1.00
R8744:Itpr1	UTSW	6	108,354,763 (GRCm39)	missense	possibly damaging	0.79
R8870:Itpr1	UTSW	6	108,365,172 (GRCm39)	missense	probably damaging	1.00
R8921:Itpr1	UTSW	6	108,355,159 (GRCm39)	missense	possibly damaging	0.87
R8961:Itpr1	UTSW	6	108,470,666 (GRCm39)	missense	possibly damaging	0.86
R9095:Itpr1	UTSW	6	108,364,352 (GRCm39)	missense	probably benign	0.02
R9205:Itpr1	UTSW	6	108,466,810 (GRCm39)	missense	probably damaging	0.99
R9282:Itpr1	UTSW	6	108,370,984 (GRCm39)	missense	probably damaging	1.00
R9323:Itpr1	UTSW	6	108,328,979 (GRCm39)	missense	probably damaging	1.00
R9376:Itpr1	UTSW	6	108,326,638 (GRCm39)	missense	probably damaging	0.99
R9392:Itpr1	UTSW	6	108,390,837 (GRCm39)	missense	probably benign
R9428:Itpr1	UTSW	6	108,378,308 (GRCm39)	missense	possibly damaging	0.84
R9621:Itpr1	UTSW	6	108,393,870 (GRCm39)	missense	probably damaging	1.00
R9632:Itpr1	UTSW	6	108,382,481 (GRCm39)	missense	possibly damaging	0.50
R9646:Itpr1	UTSW	6	108,371,845 (GRCm39)	missense	probably damaging	1.00
R9695:Itpr1	UTSW	6	108,378,311 (GRCm39)	missense	probably damaging	1.00
R9710:Itpr1	UTSW	6	108,382,481 (GRCm39)	missense	possibly damaging	0.50
R9721:Itpr1	UTSW	6	108,383,063 (GRCm39)	missense	probably damaging	0.96
R9780:Itpr1	UTSW	6	108,487,795 (GRCm39)	missense	probably benign	0.03
Z1176:Itpr1	UTSW	6	108,476,110 (GRCm39)	missense	probably damaging	1.00

Protein Function and Prediction

The Itpr1 gene encodes the inositol 1,4,5-triphosphate (IP3) receptor, an intracellular IP3-gated calcium channel that modulates intracellular calcium signaling (1;2).

Expression/Localization

ITPR1 mRNA was detected at embryonic day (E)8.5 in the heart, where it was enhanced in the posterior part of the primitive heart, including the atrium (3). ITPR1 mRNA expression extended to the ventricles through the AV canal at E9.5–10.5 (3).

Background

Mutations in ITPR1 have been shown to cause Spinocerebellar ataxia 15 (OMIM #606658), an autosomal dominant, adult-onset form of cerebellar ataxia. Patients suffer from postural tremor, pyramidal tract affection, dorsal column involvement, and gaze palsy.

Cerebral knockdown of Itpr1 by antisense oligonucleotides resulted in a reversible antidepressant behavior; impairment of locomotor activity and spontaneous mobility in the knockdown mice was not observed (4).

Itpr1^{tm1Tno/tm1Tno}; MGI:2180360

Genetic background: 129S4/SvJae * C57BL/6

Itpr1-deficient mice generated by gene targeting die in utero, and that most animals that are born alive have severe ataxia (age of onset postnatal day 9) and seizures (apparent by P15) and die by the weaning period (5). Also, the mice had decreased brain size (~40% of normal) and abnormal excitatory postsynaptic currents (5).

Itpr1^m1Asb^/m1Asb; MGI: 3715928

involves: 129X1/SvJ * C57BL/6

These mice have an in-frame 18 bp deletion in exon 36. These mice exhibit premature death post-weaning as well as paroxysmal movement disorder at P14 (6).

Itpr1^opt/opt; MGI:1856981

involves: C57BLKS

In this spontaneous mutant, a genomic deletion removes the first two exons, but does not disrupt the reading frame; the protein levels are reduced (7). These mice die by weaning or earlier (7;8). They also exhibit impaired righting response, balance, locomotor ability, and coordination (7;8). The mice have seizures by P14 and have decreased body size compared to their littermates (7;8).

References

1. Berridge, M. J. (1993) Inositol Trisphosphate and Calcium Signalling. Nature. 361, 315-325.

2. Hirota, J., Ando, H., Hamada, K., and Mikoshiba, K. (2003) Carbonic Anhydrase-Related Protein is a Novel Binding Protein for Inositol 1,4,5-Trisphosphate Receptor Type 1. Biochem J. 372, 435-441.

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Posted On

2012-10-05

Science Writer

Anne Murray