Incidental Mutation 'NA:Igf2r'
ID614
Institutional Source Beutler Lab
Gene Symbol Igf2r
Ensembl Gene ENSMUSG00000023830
Gene Nameinsulin-like growth factor 2 receptor
SynonymsM6P/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
Chromosome17
Chromosomal Location12682406-12769664 bp(-) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) C to T at 12691962 bp
ZygosityHeterozygous
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

DomainStartEndE-ValueType
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 question?
Coding Region Coverage
  • 1x: 83.4%
  • 3x: 67.1%
Het Detection Efficiency45.4%
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
GeneRefVarChr/LocMutationPredicted EffectZygosity
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
AlleleSourceChrCoordTypePredicted EffectPPH 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 On2011-03-23