Mutagenetix > Incidental Mutations

Incidental Mutation 'NA:Igf2r'

614

Institutional Source

Beutler Lab

Gene Symbol

Igf2r

Ensembl Gene

ENSMUSG00000023830

Gene Name

insulin-like growth factor 2 receptor

Synonyms

M6P/IGF2R, IGF-II/CI-MPR, Mpr300, CI-MPR, CD222, mannose-6-phosphate receptor, cation independent

Accession Numbers

Genbank: NM_010515.2; Ensembl: ENSMUST00000024599, ENSMUST00000162982, ENSMUST00000159127

Is this an essential gene?

Probably essential (E-score: 0.930) question?

Stock #

NA (G1)

Quality Score

Status

Validated

Chromosome

Chromosomal Location

12682406-12769664 bp(-) (GRCm38)

Type of Mutation

missense

DNA Base Change (assembly)

C to T at 12691962 bp

Zygosity

Heterozygous

Amino Acid Change

Valine to Isoleucine at position 1990 (V1990I)

Ref Sequence

ENSEMBL: ENSMUSP00000024599 (fasta)

Gene Model

predicted gene model for transcript(s): [ENSMUST00000024599]

Predicted Effect

probably benign
Transcript: ENSMUST00000024599
AA Change: V1990I

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)

SMART Domains

Protein: ENSMUSP00000024599
Gene: ENSMUSG00000023830
AA Change: V1990I

Domain	Start	End	E-Value	Type
signal peptide	1	35	N/A	INTRINSIC
low complexity region	94	104	N/A	INTRINSIC
Pfam:CIMR	118	266	5.1e-21	PFAM
Pfam:CIMR	272	416	8.8e-22	PFAM
Pfam:CIMR	418	567	3.4e-53	PFAM
Pfam:CIMR	569	709	6.5e-47	PFAM
Pfam:CIMR	713	869	6.5e-34	PFAM
Pfam:CIMR	876	1020	1.9e-10	PFAM
Pfam:CIMR	1024	1171	1e-60	PFAM
Pfam:CIMR	1172	1313	1.2e-17	PFAM
Pfam:CIMR	1315	1455	2.1e-58	PFAM
Pfam:CIMR	1458	1592	1.8e-22	PFAM
Pfam:CIMR	1596	1743	9.1e-23	PFAM
Pfam:CIMR	1748	1887	2.5e-22	PFAM
FN2	1889	1935	9.51e-26	SMART
Pfam:CIMR	1939	2076	2.1e-22	PFAM
Pfam:CIMR	2230	2294	4.9e-9	PFAM
transmembrane domain	2295	2317	N/A	INTRINSIC
low complexity region	2336	2363	N/A	INTRINSIC

Meta Mutation Damage Score

0.0837

Coding Region Coverage

1x: 83.4%
3x: 67.1%

Het Detection Efficiency

45.4%

Validation Efficiency

80% (107/134)

MGI Phenotype

FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a receptor for both insulin-like growth factor 2 and mannose 6-phosphate. The binding sites for each ligand are located on different segments of the protein. This receptor has various functions, including in the intracellular trafficking of lysosomal enzymes, the activation of transforming growth factor beta, and the degradation of insulin-like growth factor 2. Mutation or loss of heterozygosity of this gene has been association with risk of hepatocellular carcinoma. The orthologous mouse gene is imprinted and shows exclusive expression from the maternal allele; however, imprinting of the human gene may be polymorphic, as only a minority of individuals showed biased expression from the maternal allele (PMID:8267611). [provided by RefSeq, Nov 2015]
PHENOTYPE: Mutants inheriting maternally a targeted disruption of this gene exhibit elevated serum and tissue IGF-II levels, overgrowth, organomegaly, kinky tail, polydactyly, heart defects, edema, dyspnea, imperforate vagina, reduced fertility and perinatal death.Survival is influenced by genetic background. [provided by MGI curators]

Allele List at MGI

All alleles(13) : Targeted, knock-out(4) Targeted, other(3) Gene trapped(6)

Other mutations in this stock

Total: 7 list
Gene	Ref	Var	Chr/Loc	Mutation	Predicted Effect	Zygosity
Cep350	G	A	1: 155,958,648	S101F	probably damaging	Het
Ctnnal1	C	T	4: 56,817,044	V593I	probably benign	Het
Ftsj3	C	A	11: 106,254,808	M66I	possibly damaging	Het
Kansl1	G	A	11: 104,342,367	T778I	probably benign	Het
Mast4	G	A	13: 102,742,057	T1031I	probably damaging	Het
Pcna	A	G	2: 132,249,884	M199T	probably benign	Het
Trip11	C	T	12: 101,894,321		probably null	Het

Other mutations in Igf2r

Allele	Source	Chr	Coord	Type	Predicted Effect	PPH Score
IGL00161:Igf2r	APN	17	12713990	missense	probably benign	0.01
IGL00534:Igf2r	APN	17	12739328	missense	probably damaging	0.97
IGL00902:Igf2r	APN	17	12700358	missense	probably damaging	0.99
IGL00903:Igf2r	APN	17	12683867	missense	possibly damaging	0.70
IGL01160:Igf2r	APN	17	12704775	missense	possibly damaging	0.73
IGL01380:Igf2r	APN	17	12695374	missense	probably benign	0.01
IGL01392:Igf2r	APN	17	12704349	missense	probably benign
IGL01557:Igf2r	APN	17	12704635	missense	possibly damaging	0.82
IGL01568:Igf2r	APN	17	12683985	missense	possibly damaging	0.93
IGL01611:Igf2r	APN	17	12725415	nonsense	probably null
IGL01720:Igf2r	APN	17	12701313	missense	probably damaging	0.99
IGL01756:Igf2r	APN	17	12683822	missense	probably benign
IGL01839:Igf2r	APN	17	12705022	missense	probably damaging	1.00
IGL01904:Igf2r	APN	17	12714911	missense	probably damaging	0.99
IGL01965:Igf2r	APN	17	12704338	missense	probably benign	0.12
IGL02083:Igf2r	APN	17	12693192	nonsense	probably null
IGL02095:Igf2r	APN	17	12702005	missense	probably damaging	0.99
IGL02183:Igf2r	APN	17	12698516	unclassified	probably benign
IGL02576:Igf2r	APN	17	12748763	missense	possibly damaging	0.90
IGL02649:Igf2r	APN	17	12712087	missense	possibly damaging	0.93
IGL02807:Igf2r	APN	17	12719883	missense	probably damaging	0.98
IGL02833:Igf2r	APN	17	12692723	missense	probably damaging	0.97
IGL02885:Igf2r	APN	17	12694120	missense	possibly damaging	0.94
IGL02990:Igf2r	APN	17	12710746	splice site	probably benign
IGL03080:Igf2r	APN	17	12726676	missense	probably benign	0.06
IGL03176:Igf2r	APN	17	12716672	missense	probably damaging	1.00
R5473_Igf2r_949	UTSW	17	12695314	missense	probably benign	0.20
R0165:Igf2r	UTSW	17	12698527	missense	probably benign	0.07
R0412:Igf2r	UTSW	17	12683948	missense	probably damaging	0.98
R0523:Igf2r	UTSW	17	12692064	missense	probably benign	0.27
R0631:Igf2r	UTSW	17	12717274	splice site	probably null
R0722:Igf2r	UTSW	17	12715495	critical splice acceptor site	probably null
R0894:Igf2r	UTSW	17	12692101	missense	probably benign	0.02
R1265:Igf2r	UTSW	17	12694124	missense	probably damaging	0.98
R1466:Igf2r	UTSW	17	12717269	splice site	probably benign
R1485:Igf2r	UTSW	17	12691285	missense	probably damaging	1.00
R1633:Igf2r	UTSW	17	12726309	missense	probably benign
R1693:Igf2r	UTSW	17	12704316	missense	probably damaging	0.97
R1751:Igf2r	UTSW	17	12697441	missense	possibly damaging	0.94
R1843:Igf2r	UTSW	17	12704270	critical splice donor site	probably null
R1981:Igf2r	UTSW	17	12733903	nonsense	probably null
R1994:Igf2r	UTSW	17	12692738	missense	probably benign
R2060:Igf2r	UTSW	17	12701319	missense	possibly damaging	0.92
R2108:Igf2r	UTSW	17	12698251	missense	probably benign	0.02
R2132:Igf2r	UTSW	17	12722208	missense	probably benign	0.12
R2314:Igf2r	UTSW	17	12715943	missense	probably benign	0.28
R2349:Igf2r	UTSW	17	12722311	splice site	probably null
R2696:Igf2r	UTSW	17	12695344	missense	possibly damaging	0.96
R2864:Igf2r	UTSW	17	12686724	missense	probably damaging	0.99
R2865:Igf2r	UTSW	17	12686724	missense	probably damaging	0.99
R3884:Igf2r	UTSW	17	12709468	missense	probably benign
R3930:Igf2r	UTSW	17	12705829	missense	probably benign	0.01
R4021:Igf2r	UTSW	17	12748751	missense	probably damaging	0.97
R4125:Igf2r	UTSW	17	12702254	missense	possibly damaging	0.93
R4342:Igf2r	UTSW	17	12709511	missense	possibly damaging	0.95
R4343:Igf2r	UTSW	17	12709511	missense	possibly damaging	0.95
R4345:Igf2r	UTSW	17	12709511	missense	possibly damaging	0.95
R4760:Igf2r	UTSW	17	12703465	missense	possibly damaging	0.92
R4796:Igf2r	UTSW	17	12684126	missense	possibly damaging	0.70
R4816:Igf2r	UTSW	17	12684097	missense	probably damaging	0.96
R4826:Igf2r	UTSW	17	12701353	missense	probably damaging	0.98
R4933:Igf2r	UTSW	17	12691877	splice site	probably null
R4980:Igf2r	UTSW	17	12703360	critical splice donor site	probably null
R5389:Igf2r	UTSW	17	12725416	missense	probably damaging	1.00
R5473:Igf2r	UTSW	17	12695314	missense	probably benign	0.20
R5494:Igf2r	UTSW	17	12693145	missense	possibly damaging	0.74
R5619:Igf2r	UTSW	17	12739334	missense	probably damaging	1.00
R5738:Igf2r	UTSW	17	12717367	missense	probably benign	0.23
R5761:Igf2r	UTSW	17	12698352	splice site	probably null
R5794:Igf2r	UTSW	17	12709445	missense	probably benign	0.37
R6210:Igf2r	UTSW	17	12714951	missense	probably damaging	0.98
R6319:Igf2r	UTSW	17	12714113	missense	probably damaging	1.00
R6388:Igf2r	UTSW	17	12683900	missense	probably benign
R6396:Igf2r	UTSW	17	12714090	missense	probably benign	0.00
R6584:Igf2r	UTSW	17	12701250	missense	probably damaging	0.99
R6590:Igf2r	UTSW	17	12691937	nonsense	probably null
R6591:Igf2r	UTSW	17	12689008	missense	probably damaging	1.00
R6599:Igf2r	UTSW	17	12698618	missense	possibly damaging	0.85
R6690:Igf2r	UTSW	17	12691937	nonsense	probably null
R6691:Igf2r	UTSW	17	12689008	missense	probably damaging	1.00
R6752:Igf2r	UTSW	17	12714944	missense	probably damaging	1.00
R6816:Igf2r	UTSW	17	12714082	missense	probably damaging	0.99
R6841:Igf2r	UTSW	17	12703376	missense	probably damaging	0.97
R6877:Igf2r	UTSW	17	12697341	missense	probably damaging	0.97
R6950:Igf2r	UTSW	17	12718718	missense	probably benign
R7030:Igf2r	UTSW	17	12733866	missense	probably damaging	1.00
R7038:Igf2r	UTSW	17	12698325	missense	probably benign	0.23
R7055:Igf2r	UTSW	17	12704323	missense	probably damaging	0.99
R7074:Igf2r	UTSW	17	12714116	missense	possibly damaging	0.57
R7348:Igf2r	UTSW	17	12703484	missense	probably damaging	0.99
R7413:Igf2r	UTSW	17	12698228	nonsense	probably null
R7463:Igf2r	UTSW	17	12710645	missense	probably benign	0.16
R7619:Igf2r	UTSW	17	12698273	missense	possibly damaging	0.88
R7730:Igf2r	UTSW	17	12735991	missense	probably damaging	0.98
R7733:Igf2r	UTSW	17	12739369	missense	possibly damaging	0.90
R7881:Igf2r	UTSW	17	12748704	missense	probably benign
R8022:Igf2r	UTSW	17	12718795	missense	probably damaging	1.00
R8138:Igf2r	UTSW	17	12701238	missense	probably benign	0.32
R8220:Igf2r	UTSW	17	12692071	missense	probably benign	0.22
R8305:Igf2r	UTSW	17	12733860	missense	probably benign
R8359:Igf2r	UTSW	17	12683861	missense	probably benign
R8500:Igf2r	UTSW	17	12709441	missense	probably damaging	0.99
R8510:Igf2r	UTSW	17	12704313	missense	probably benign	0.38
X0028:Igf2r	UTSW	17	12704913	nonsense	probably null
Z1177:Igf2r	UTSW	17	12697399	missense	probably damaging	0.99

Nature of Mutation

DNA sequencing using the SOLiD technique identified a G to A transition at position 6141 of the Igf2r transcript in exon 40 of 48 exons using Genbank record NM_010515.2. Multiple transcripts of the Igf2r gene are displayed on Ensembl and Vega. The mutated nucleotide causes a valine to isoleucine substitution at amino acid 1990 of the encoded protein. The mutation has been confirmed by DNA sequencing using the Sanger method.

Protein Function and Prediction

The Igf2r gene encodes a 2483 amino acid multifunctional receptor that possesses binding sites for diverse ligands, including insulin-like growth factor 2 (IGF2), retinoic acid (RA), TGF-beta, urokinase-type plasminogen activator receptor (UPAR), and mannose-6-phosphate (M6P), a modification characteristic of lysosomal enzymes. IGF2R plays major roles in controlling IGF signaling by directing IGF2 to lysosomes, in targeting lysosomal enzymes to lysosomes, and in recycling lysosomal enzymes from the plasma membrane. The protein acts as a positive regulator of T-cell coactivation by binding DPP4, a cell surface glycoprotein receptor involved in the costimulatory signal essential for T-cell receptor (TCR)-mediated T-cell activation. IGF2R contains 15 repeats in its lumenal or extracellular region. The transmembrane domain occurs at residues 2296-2316 and a fibronectin type-II domain is located at residues 1891-1937 (Uniprot Q07113). The Igf2r gene is an imprinted gene in mice with expression only from the maternal allele. Complete knockout of the gene in mice results in fetal overgrowth and neonatal lethality with generalized organomegaly, kinky tail, postaxial polydactyly, heart abnormalities, and edema. In contrast, tissue-specific inactivation of this gene in either the liver or skeletal and cardiac muscle gives rise to viable animals with no obvious phenotype.

The V1990I alteration occurs in the 13th repeat.

Posted On

2011-03-23