Incidental Mutation 'R1740:Lamb2'
ID 200296
Institutional Source Beutler Lab
Gene Symbol Lamb2
Ensembl Gene ENSMUSG00000052911
Gene Name laminin, beta 2
Synonyms Lams, npht, Lamb-2
MMRRC Submission 039772-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.854) question?
Stock # R1740 (G1)
Quality Score 225
Status Validated
Chromosome 9
Chromosomal Location 108357080-108367729 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to G at 108359127 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Valine to Glycine at position 281 (V281G)
Ref Sequence ENSEMBL: ENSMUSP00000069087 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000065014] [ENSMUST00000194147] [ENSMUST00000195058] [ENSMUST00000195483]
AlphaFold Q61292
Predicted Effect probably damaging
Transcript: ENSMUST00000065014
AA Change: V281G

PolyPhen 2 Score 0.998 (Sensitivity: 0.27; Specificity: 0.99)
SMART Domains Protein: ENSMUSP00000069087
Gene: ENSMUSG00000052911
AA Change: V281G

DomainStartEndE-ValueType
signal peptide 1 35 N/A INTRINSIC
LamNT 44 284 1.9e-102 SMART
EGF_Lam 286 347 1.34e-6 SMART
EGF_Lam 350 410 6.1e-10 SMART
EGF_Lam 413 470 2.98e-13 SMART
EGF_Lam 473 522 7.93e-9 SMART
EGF_Lam 525 569 1.01e-10 SMART
EGF_Lam 784 829 3.42e-13 SMART
EGF_Lam 832 875 6.54e-10 SMART
EGF_Lam 878 925 1.34e-6 SMART
EGF_Lam 928 984 4.74e-7 SMART
EGF_Lam 987 1036 1.53e-10 SMART
EGF_Lam 1039 1093 6.29e-12 SMART
EGF_Lam 1096 1141 1.79e-7 SMART
EGF_Lam 1144 1188 6.64e-11 SMART
coiled coil region 1261 1299 N/A INTRINSIC
low complexity region 1445 1458 N/A INTRINSIC
coiled coil region 1473 1527 N/A INTRINSIC
low complexity region 1609 1625 N/A INTRINSIC
SCOP:d1eq1a_ 1632 1786 5e-17 SMART
Predicted Effect noncoding transcript
Transcript: ENSMUST00000191864
Predicted Effect probably benign
Transcript: ENSMUST00000194147
SMART Domains Protein: ENSMUSP00000141562
Gene: ENSMUSG00000052911

DomainStartEndE-ValueType
low complexity region 59 79 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000195058
SMART Domains Protein: ENSMUSP00000141757
Gene: ENSMUSG00000052911

DomainStartEndE-ValueType
signal peptide 1 35 N/A INTRINSIC
Pfam:Laminin_N 50 102 6.2e-16 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000195483
SMART Domains Protein: ENSMUSP00000142304
Gene: ENSMUSG00000052911

DomainStartEndE-ValueType
signal peptide 1 35 N/A INTRINSIC
LamNT 44 125 3e-3 SMART
Meta Mutation Damage Score 0.4655 question?
Coding Region Coverage
  • 1x: 97.5%
  • 3x: 97.0%
  • 10x: 95.5%
  • 20x: 93.0%
Validation Efficiency 99% (69/70)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Laminins, a family of extracellular matrix glycoproteins, are the major noncollagenous constituent of basement membranes. They have been implicated in a wide variety of biological processes including cell adhesion, differentiation, migration, signaling, neurite outgrowth and metastasis. Laminins, composed of 3 non identical chains: laminin alpha, beta and gamma (formerly A, B1, and B2, respectively), form a cruciform structure consisting of 3 short arms, each formed by a different chain, and a long arm composed of all 3 chains. Each laminin chain is a multidomain protein encoded by a distinct gene. Several isoforms of each chain have been described. Different alpha, beta and gamma chain isomers combine to give rise to different heterotrimeric laminin isoforms which are designated by Arabic numerals in the order of their discovery, i.e. alpha1beta1gamma1 heterotrimer is laminin 1. The biological functions of the different chains and trimer molecules are largely unknown, but some of the chains have been shown to differ with respect to their tissue distribution, presumably reflecting diverse functions in vivo. This gene encodes the beta chain isoform laminin, beta 2. The beta 2 chain contains the 7 structural domains typical of beta chains of laminin, including the short alpha region. However, unlike beta 1 chain, beta 2 has a more restricted tissue distribution. It is enriched in the basement membrane of muscles at the neuromuscular junctions, kidney glomerulus and vascular smooth muscle. Transgenic mice in which the beta 2 chain gene was inactivated by homologous recombination, showed defects in the maturation of neuromuscular junctions and impairment of glomerular filtration. Alternative splicing involving a non consensus 5' splice site (gc) in the 5' UTR of this gene has been reported. It was suggested that inefficient splicing of this first intron, which does not change the protein sequence, results in a greater abundance of the unspliced form of the transcript than the spliced form. The full-length nature of the spliced transcript is not known. [provided by RefSeq, Aug 2011]
PHENOTYPE: Homozygotes for a targeted null mutation exhibit small size, severe proteinuria due to a defect in glomerular filtration, abnormalities of the retina and skeletal neuromuscular synapses, and lethality by 30 days of age. [provided by MGI curators]
Allele List at MGI

All alleles(5) : Targeted, knock-out(2) Gene trapped(3)

Other mutations in this stock
Total: 62 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
2610021A01Rik T A 7: 41,275,549 (GRCm39) C417* probably null Het
4930548G14Rik G A 15: 46,488,885 (GRCm39) noncoding transcript Het
Abcc12 T A 8: 87,232,126 (GRCm39) K1311* probably null Het
Abcc12 T C 8: 87,236,400 (GRCm39) D1138G possibly damaging Het
Adam32 A G 8: 25,411,314 (GRCm39) S116P probably damaging Het
Arhgef26 C T 3: 62,331,004 (GRCm39) L39F probably damaging Het
Babam1 T C 8: 71,855,663 (GRCm39) I252T probably damaging Het
Btf3 C T 13: 98,452,804 (GRCm39) M1I probably null Het
Ccdc61 G T 7: 18,637,862 (GRCm39) probably benign Het
Ccdc89 C T 7: 90,075,946 (GRCm39) S52F probably damaging Het
Cds2 T A 2: 132,144,133 (GRCm39) I320N possibly damaging Het
Cebpe T C 14: 54,949,399 (GRCm39) Y6C probably damaging Het
Cep250 T A 2: 155,815,276 (GRCm39) I598N probably damaging Het
Cep350 T A 1: 155,804,579 (GRCm39) I835F probably damaging Het
Ces3a T C 8: 105,775,317 (GRCm39) L22P probably damaging Het
Cfap221 T C 1: 119,873,558 (GRCm39) S490G probably benign Het
Cyp2j11 A G 4: 96,207,613 (GRCm39) V234A probably benign Het
Dgat1 T C 15: 76,386,929 (GRCm39) H399R probably damaging Het
Dnah10 A T 5: 124,850,254 (GRCm39) probably null Het
Ebpl T G 14: 61,578,656 (GRCm39) K193T probably benign Het
Entpd5 T C 12: 84,443,545 (GRCm39) N66S probably benign Het
Fcgbp G T 7: 27,800,674 (GRCm39) G1240V possibly damaging Het
Gabra5 A G 7: 57,071,590 (GRCm39) S209P probably benign Het
Glce A T 9: 61,977,815 (GRCm39) V23D probably damaging Het
Gm14226 GACTGTTAC GAC 2: 154,866,851 (GRCm39) probably benign Het
Gtf2h1 A G 7: 46,461,890 (GRCm39) N296S probably null Het
Herc6 T C 6: 57,629,050 (GRCm39) S654P probably benign Het
Kcnk3 A T 5: 30,779,321 (GRCm39) M124L possibly damaging Het
Lctl A T 9: 64,040,389 (GRCm39) D444V probably damaging Het
Mcm2 A G 6: 88,861,026 (GRCm39) F891L probably damaging Het
Mcub A T 3: 129,712,376 (GRCm39) H166Q probably benign Het
Mical2 G T 7: 111,933,043 (GRCm39) R739L probably benign Het
Mideas T C 12: 84,219,676 (GRCm39) E426G probably damaging Het
Mkrn2 G T 6: 115,590,330 (GRCm39) A229S probably damaging Het
Mmp7 A G 9: 7,695,278 (GRCm39) Y80C possibly damaging Het
Mpp2 T C 11: 101,953,222 (GRCm39) probably null Het
Msh6 C A 17: 88,293,150 (GRCm39) T635K possibly damaging Het
Mvd T A 8: 123,163,286 (GRCm39) T315S probably benign Het
Myocd C T 11: 65,109,347 (GRCm39) probably benign Het
Nav1 C T 1: 135,386,127 (GRCm39) probably null Het
Or4k48 T A 2: 111,476,214 (GRCm39) I43F probably damaging Het
Pde4b A T 4: 102,344,548 (GRCm39) D141V probably damaging Het
Pdgfrb A T 18: 61,214,905 (GRCm39) D978V possibly damaging Het
Prss55 T C 14: 64,313,129 (GRCm39) T252A probably damaging Het
Psd3 A T 8: 68,573,491 (GRCm39) V230E probably damaging Het
Ptk2 A G 15: 73,114,255 (GRCm39) V701A possibly damaging Het
Ptprn A G 1: 75,238,694 (GRCm39) V82A probably damaging Het
Ptpru G T 4: 131,520,989 (GRCm39) probably null Het
Raph1 T A 1: 60,558,183 (GRCm39) K258* probably null Het
Rnf25 A G 1: 74,637,886 (GRCm39) V28A probably damaging Het
Slc25a4 C T 8: 46,661,540 (GRCm39) V212M probably benign Het
Slc39a3 T C 10: 80,867,342 (GRCm39) S135G probably damaging Het
Slco6d1 A G 1: 98,356,097 (GRCm39) I220M probably damaging Het
Smim19 G T 8: 22,963,544 (GRCm39) Y21* probably null Het
Speer4f1 A C 5: 17,683,759 (GRCm39) Y141S probably damaging Het
Srgap2 G A 1: 131,217,126 (GRCm39) P1062L probably benign Het
Stra8 A T 6: 34,904,654 (GRCm39) probably benign Het
Timm21 G C 18: 84,967,387 (GRCm39) L130V probably damaging Het
Tmem40 A G 6: 115,715,960 (GRCm39) S76P probably benign Het
Unc13b C T 4: 43,240,285 (GRCm39) R3569W probably damaging Het
Vmn1r128 A T 7: 21,083,869 (GRCm39) Q191L probably benign Het
Washc2 T A 6: 116,208,593 (GRCm39) probably benign Het
Other mutations in Lamb2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01370:Lamb2 APN 9 108,364,932 (GRCm39) splice site probably null
IGL02072:Lamb2 APN 9 108,359,107 (GRCm39) nonsense probably null
IGL02079:Lamb2 APN 9 108,359,312 (GRCm39) missense probably damaging 1.00
IGL02087:Lamb2 APN 9 108,364,318 (GRCm39) missense possibly damaging 0.95
IGL02193:Lamb2 APN 9 108,366,559 (GRCm39) missense probably benign 0.00
IGL02199:Lamb2 APN 9 108,357,824 (GRCm39) missense possibly damaging 0.49
IGL02201:Lamb2 APN 9 108,364,741 (GRCm39) missense probably damaging 1.00
IGL02468:Lamb2 APN 9 108,364,348 (GRCm39) missense probably damaging 1.00
F6893:Lamb2 UTSW 9 108,359,755 (GRCm39) missense probably benign 0.12
R0053:Lamb2 UTSW 9 108,363,936 (GRCm39) nonsense probably null
R0053:Lamb2 UTSW 9 108,363,936 (GRCm39) nonsense probably null
R0122:Lamb2 UTSW 9 108,363,713 (GRCm39) missense probably benign 0.01
R0452:Lamb2 UTSW 9 108,363,553 (GRCm39) unclassified probably benign
R0524:Lamb2 UTSW 9 108,361,571 (GRCm39) missense possibly damaging 0.90
R0605:Lamb2 UTSW 9 108,363,304 (GRCm39) unclassified probably benign
R0737:Lamb2 UTSW 9 108,360,993 (GRCm39) missense probably benign 0.03
R1083:Lamb2 UTSW 9 108,360,892 (GRCm39) missense probably benign
R1159:Lamb2 UTSW 9 108,358,607 (GRCm39) missense probably damaging 1.00
R1283:Lamb2 UTSW 9 108,359,007 (GRCm39) missense possibly damaging 0.46
R1507:Lamb2 UTSW 9 108,367,581 (GRCm39) missense probably damaging 1.00
R1547:Lamb2 UTSW 9 108,359,824 (GRCm39) missense probably benign 0.00
R1576:Lamb2 UTSW 9 108,357,506 (GRCm39) missense probably damaging 0.96
R1647:Lamb2 UTSW 9 108,358,622 (GRCm39) critical splice donor site probably null
R1678:Lamb2 UTSW 9 108,360,885 (GRCm39) critical splice acceptor site probably null
R1803:Lamb2 UTSW 9 108,365,298 (GRCm39) missense probably benign
R1846:Lamb2 UTSW 9 108,364,586 (GRCm39) missense probably benign 0.00
R1863:Lamb2 UTSW 9 108,358,583 (GRCm39) missense probably benign 0.13
R2184:Lamb2 UTSW 9 108,357,752 (GRCm39) missense probably damaging 1.00
R2262:Lamb2 UTSW 9 108,357,809 (GRCm39) missense probably damaging 1.00
R2338:Lamb2 UTSW 9 108,359,340 (GRCm39) missense probably benign 0.20
R2483:Lamb2 UTSW 9 108,357,758 (GRCm39) missense probably damaging 1.00
R4084:Lamb2 UTSW 9 108,365,217 (GRCm39) missense probably benign 0.17
R4164:Lamb2 UTSW 9 108,367,497 (GRCm39) missense probably damaging 1.00
R4295:Lamb2 UTSW 9 108,363,410 (GRCm39) missense probably benign 0.42
R4422:Lamb2 UTSW 9 108,360,754 (GRCm39) missense probably damaging 0.99
R4497:Lamb2 UTSW 9 108,363,997 (GRCm39) missense probably damaging 1.00
R4880:Lamb2 UTSW 9 108,361,226 (GRCm39) splice site probably null
R4935:Lamb2 UTSW 9 108,364,700 (GRCm39) missense possibly damaging 0.93
R4977:Lamb2 UTSW 9 108,364,846 (GRCm39) missense probably damaging 0.99
R5152:Lamb2 UTSW 9 108,364,937 (GRCm39) missense probably benign
R5499:Lamb2 UTSW 9 108,365,001 (GRCm39) missense possibly damaging 0.50
R5724:Lamb2 UTSW 9 108,357,950 (GRCm39) splice site probably null
R5932:Lamb2 UTSW 9 108,357,810 (GRCm39) missense probably damaging 1.00
R5997:Lamb2 UTSW 9 108,357,587 (GRCm39) missense possibly damaging 0.65
R6052:Lamb2 UTSW 9 108,364,811 (GRCm39) nonsense probably null
R6142:Lamb2 UTSW 9 108,362,817 (GRCm39) nonsense probably null
R6245:Lamb2 UTSW 9 108,365,398 (GRCm39) splice site probably null
R6531:Lamb2 UTSW 9 108,360,925 (GRCm39) missense possibly damaging 0.78
R6557:Lamb2 UTSW 9 108,365,599 (GRCm39) missense probably damaging 1.00
R6562:Lamb2 UTSW 9 108,364,207 (GRCm39) missense possibly damaging 0.56
R6997:Lamb2 UTSW 9 108,358,496 (GRCm39) missense probably damaging 1.00
R7024:Lamb2 UTSW 9 108,366,687 (GRCm39) missense probably benign 0.00
R7116:Lamb2 UTSW 9 108,364,522 (GRCm39) missense probably damaging 1.00
R7146:Lamb2 UTSW 9 108,361,283 (GRCm39) missense possibly damaging 0.94
R7261:Lamb2 UTSW 9 108,358,496 (GRCm39) missense probably damaging 1.00
R7288:Lamb2 UTSW 9 108,365,523 (GRCm39) missense probably benign 0.20
R7404:Lamb2 UTSW 9 108,364,782 (GRCm39) missense probably damaging 1.00
R7456:Lamb2 UTSW 9 108,362,979 (GRCm39) missense possibly damaging 0.95
R7472:Lamb2 UTSW 9 108,363,347 (GRCm39) missense probably benign 0.01
R7623:Lamb2 UTSW 9 108,366,423 (GRCm39) missense possibly damaging 0.62
R8125:Lamb2 UTSW 9 108,364,722 (GRCm39) missense probably benign
R8153:Lamb2 UTSW 9 108,357,845 (GRCm39) missense probably damaging 0.99
R8154:Lamb2 UTSW 9 108,357,845 (GRCm39) missense probably damaging 0.99
R8155:Lamb2 UTSW 9 108,357,845 (GRCm39) missense probably damaging 0.99
R8156:Lamb2 UTSW 9 108,357,845 (GRCm39) missense probably damaging 0.99
R8157:Lamb2 UTSW 9 108,357,845 (GRCm39) missense probably damaging 0.99
R8419:Lamb2 UTSW 9 108,365,563 (GRCm39) missense probably benign 0.00
R8695:Lamb2 UTSW 9 108,363,365 (GRCm39) missense probably benign 0.08
R8825:Lamb2 UTSW 9 108,362,460 (GRCm39) missense probably benign 0.01
R9005:Lamb2 UTSW 9 108,361,370 (GRCm39) critical splice donor site probably null
R9315:Lamb2 UTSW 9 108,364,366 (GRCm39) missense possibly damaging 0.77
R9398:Lamb2 UTSW 9 108,364,366 (GRCm39) missense possibly damaging 0.77
R9419:Lamb2 UTSW 9 108,356,959 (GRCm39) missense unknown
R9450:Lamb2 UTSW 9 108,357,760 (GRCm39) nonsense probably null
R9495:Lamb2 UTSW 9 108,358,006 (GRCm39) missense probably damaging 1.00
R9514:Lamb2 UTSW 9 108,358,006 (GRCm39) missense probably damaging 1.00
R9529:Lamb2 UTSW 9 108,363,477 (GRCm39) missense probably benign 0.05
R9532:Lamb2 UTSW 9 108,365,830 (GRCm39) missense probably damaging 1.00
R9534:Lamb2 UTSW 9 108,365,830 (GRCm39) missense probably damaging 1.00
R9734:Lamb2 UTSW 9 108,365,830 (GRCm39) missense probably damaging 1.00
Z1176:Lamb2 UTSW 9 108,360,100 (GRCm39) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- CAAATGCCAAGCCCAGTTTAGCTC -3'
(R):5'- AGCACCATCTAGAAATGCCTGTCCC -3'

Sequencing Primer
(F):5'- TGCAACCAATGGTGGCAC -3'
(R):5'- GAAATGCCTGTCCCTCCCC -3'
Posted On 2014-05-23