Incidental Mutation 'R1159:Lamb2'
ID101973
Institutional Source Beutler Lab
Gene Symbol Lamb2
Ensembl Gene ENSMUSG00000052911
Gene Namelaminin, beta 2
SynonymsLams, npht, Lamb-2
MMRRC Submission 039232-MU
Accession Numbers

Genbank: NM_008483; MGI: 99916

Is this an essential gene? Probably essential (E-score: 0.843) question?
Stock #R1159 (G1)
Quality Score225
Status Validated
Chromosome9
Chromosomal Location108479736-108490530 bp(+) (GRCm38)
Type of Mutationmissense
DNA Base Change (assembly) T to C at 108481408 bp
ZygosityHeterozygous
Amino Acid Change Serine to Proline at position 215 (S215P)
Ref Sequence ENSEMBL: ENSMUSP00000069087 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000065014] [ENSMUST00000194147] [ENSMUST00000195058] [ENSMUST00000195483]
Predicted Effect probably damaging
Transcript: ENSMUST00000065014
AA Change: S215P

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000069087
Gene: ENSMUSG00000052911
AA Change: S215P

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 0.226 question?
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.2%
  • 10x: 96.1%
  • 20x: 91.8%
Validation Efficiency 100% (42/42)
MGI Phenotype Strain: 2138070
Lethality: D1-D30
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: 39 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Aass G A 6: 23,115,138 H164Y probably damaging Het
Acss2 T C 2: 155,551,218 I288T probably benign Het
Akap9 C T 5: 3,960,865 R541C probably damaging Het
Ano5 T C 7: 51,579,474 probably benign Het
Anp32b T C 4: 46,471,478 probably benign Het
Avil T C 10: 127,011,790 V528A possibly damaging Het
B020004J07Rik T C 4: 101,838,027 E29G possibly damaging Het
Cacna1c C T 6: 118,612,625 R1446H probably damaging Het
Cdk10 T C 8: 123,228,323 probably benign Het
Cfap65 A T 1: 74,929,340 F111Y probably damaging Het
Cryge A G 1: 65,050,808 F72L probably benign Het
Ercc3 C T 18: 32,264,558 T614I possibly damaging Het
Fgd5 T C 6: 91,988,502 I572T probably benign Het
Fubp1 A G 3: 152,215,592 D88G possibly damaging Het
Gcnt1 C A 19: 17,329,804 V186F possibly damaging Het
Gldc A T 19: 30,160,762 probably benign Het
Gxylt2 A G 6: 100,804,641 M426V possibly damaging Het
Hps5 A T 7: 46,772,554 probably null Het
Igf2bp2 G A 16: 22,061,853 probably benign Het
Mfsd13b T C 7: 121,014,543 M421T probably damaging Het
Mtif2 C A 11: 29,540,729 R478S possibly damaging Het
Nadk2 G A 15: 9,106,837 R351H possibly damaging Het
Nt5dc1 T C 10: 34,398,173 D167G possibly damaging Het
Nup98 T A 7: 102,160,716 T536S probably damaging Het
Parp14 G A 16: 35,856,760 A946V probably benign Het
Ppig T A 2: 69,750,224 S701T unknown Het
Ptprc A G 1: 138,072,319 S830P probably damaging Het
Rev3l T A 10: 39,851,925 L2690* probably null Het
Rgs22 A T 15: 36,040,693 S883T probably damaging Het
Rxfp4 A G 3: 88,652,587 W186R probably damaging Het
Sacm1l T C 9: 123,566,411 S200P probably benign Het
Serpinb6d T A 13: 33,671,229 D295E probably damaging Het
Slc38a10 A G 11: 120,105,475 V932A probably benign Het
Top2b T C 14: 16,430,329 S1568P possibly damaging Het
Tox T G 4: 6,697,600 N401T probably benign Het
Trim24 T C 6: 37,956,477 probably null Het
Unc79 T G 12: 103,047,052 probably benign Het
Vmn2r66 A T 7: 84,995,405 I599N probably benign Het
Zfa-ps T A 10: 52,543,558 noncoding transcript Het
Other mutations in Lamb2
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL01370:Lamb2 APN 9 108487733 unclassified probably null
IGL02072:Lamb2 APN 9 108481908 nonsense probably null
IGL02079:Lamb2 APN 9 108482113 missense probably damaging 1.00
IGL02087:Lamb2 APN 9 108487119 missense possibly damaging 0.95
IGL02193:Lamb2 APN 9 108489360 missense probably benign 0.00
IGL02199:Lamb2 APN 9 108480625 missense possibly damaging 0.49
IGL02201:Lamb2 APN 9 108487542 missense probably damaging 1.00
IGL02468:Lamb2 APN 9 108487149 missense probably damaging 1.00
F6893:Lamb2 UTSW 9 108482556 missense probably benign 0.12
R0053:Lamb2 UTSW 9 108486737 nonsense probably null
R0053:Lamb2 UTSW 9 108486737 nonsense probably null
R0122:Lamb2 UTSW 9 108486514 missense probably benign 0.01
R0452:Lamb2 UTSW 9 108486354 unclassified probably benign
R0524:Lamb2 UTSW 9 108484372 missense possibly damaging 0.90
R0605:Lamb2 UTSW 9 108486105 unclassified probably benign
R0737:Lamb2 UTSW 9 108483794 missense probably benign 0.03
R1083:Lamb2 UTSW 9 108483693 missense probably benign
R1283:Lamb2 UTSW 9 108481808 missense possibly damaging 0.46
R1507:Lamb2 UTSW 9 108490382 missense probably damaging 1.00
R1547:Lamb2 UTSW 9 108482625 missense probably benign 0.00
R1576:Lamb2 UTSW 9 108480307 missense probably damaging 0.96
R1647:Lamb2 UTSW 9 108481423 critical splice donor site probably null
R1678:Lamb2 UTSW 9 108483686 critical splice acceptor site probably null
R1740:Lamb2 UTSW 9 108481928 missense probably damaging 1.00
R1803:Lamb2 UTSW 9 108488099 missense probably benign
R1846:Lamb2 UTSW 9 108487387 missense probably benign 0.00
R1863:Lamb2 UTSW 9 108481384 missense probably benign 0.13
R2184:Lamb2 UTSW 9 108480553 missense probably damaging 1.00
R2262:Lamb2 UTSW 9 108480610 missense probably damaging 1.00
R2338:Lamb2 UTSW 9 108482141 missense probably benign 0.20
R2483:Lamb2 UTSW 9 108480559 missense probably damaging 1.00
R4084:Lamb2 UTSW 9 108488018 missense probably benign 0.17
R4164:Lamb2 UTSW 9 108490298 missense probably damaging 1.00
R4295:Lamb2 UTSW 9 108486211 missense probably benign 0.42
R4422:Lamb2 UTSW 9 108483555 missense probably damaging 0.99
R4497:Lamb2 UTSW 9 108486798 missense probably damaging 1.00
R4880:Lamb2 UTSW 9 108484027 unclassified probably null
R4935:Lamb2 UTSW 9 108487501 missense possibly damaging 0.93
R4977:Lamb2 UTSW 9 108487647 missense probably damaging 0.99
R5152:Lamb2 UTSW 9 108487738 missense probably benign
R5499:Lamb2 UTSW 9 108487802 missense possibly damaging 0.50
R5724:Lamb2 UTSW 9 108480751 splice site probably null
R5932:Lamb2 UTSW 9 108480611 missense probably damaging 1.00
R5997:Lamb2 UTSW 9 108480388 missense possibly damaging 0.65
R6052:Lamb2 UTSW 9 108487612 nonsense probably null
R6142:Lamb2 UTSW 9 108485618 nonsense probably null
R6245:Lamb2 UTSW 9 108488199 splice site probably null
R6531:Lamb2 UTSW 9 108483726 missense possibly damaging 0.78
R6557:Lamb2 UTSW 9 108488400 missense probably damaging 1.00
R6562:Lamb2 UTSW 9 108487008 missense possibly damaging 0.56
R6997:Lamb2 UTSW 9 108481297 missense probably damaging 1.00
R7024:Lamb2 UTSW 9 108489488 missense probably benign 0.00
R7116:Lamb2 UTSW 9 108487323 missense not run
R7146:Lamb2 UTSW 9 108484084 missense not run
Predicted Primers
Posted On2014-01-15