Incidental Mutation 'R1576:Lamb2'
ID 171172
Institutional Source Beutler Lab
Gene Symbol Lamb2
Ensembl Gene ENSMUSG00000052911
Gene Name laminin, beta 2
Synonyms Lams, npht, Lamb-2
MMRRC Submission 039614-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.854) question?
Stock # R1576 (G1)
Quality Score 225
Status Validated
Chromosome 9
Chromosomal Location 108357080-108367729 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) T to C at 108357506 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Serine to Proline at position 81 (S81P)
Ref Sequence ENSEMBL: ENSMUSP00000141562 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000065014] [ENSMUST00000194147] [ENSMUST00000195058] [ENSMUST00000195483]
AlphaFold Q61292
Predicted Effect probably benign
Transcript: ENSMUST00000065014
AA Change: S39P

PolyPhen 2 Score 0.000 (Sensitivity: 1.00; Specificity: 0.00)
SMART Domains Protein: ENSMUSP00000069087
Gene: ENSMUSG00000052911
AA Change: S39P

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 damaging
Transcript: ENSMUST00000194147
AA Change: S81P

PolyPhen 2 Score 0.963 (Sensitivity: 0.78; Specificity: 0.95)
SMART Domains Protein: ENSMUSP00000141562
Gene: ENSMUSG00000052911
AA Change: S81P

DomainStartEndE-ValueType
low complexity region 59 79 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000195058
AA Change: S39P

PolyPhen 2 Score 0.252 (Sensitivity: 0.91; Specificity: 0.88)
SMART Domains Protein: ENSMUSP00000141757
Gene: ENSMUSG00000052911
AA Change: S39P

DomainStartEndE-ValueType
signal peptide 1 35 N/A INTRINSIC
Pfam:Laminin_N 50 102 6.2e-16 PFAM
Predicted Effect probably benign
Transcript: ENSMUST00000195483
AA Change: S39P

PolyPhen 2 Score 0.209 (Sensitivity: 0.92; Specificity: 0.88)
SMART Domains Protein: ENSMUSP00000142304
Gene: ENSMUSG00000052911
AA Change: S39P

DomainStartEndE-ValueType
signal peptide 1 35 N/A INTRINSIC
LamNT 44 125 3e-3 SMART
Meta Mutation Damage Score 0.6467 question?
Coding Region Coverage
  • 1x: 99.1%
  • 3x: 98.2%
  • 10x: 96.0%
  • 20x: 92.1%
Validation Efficiency 100% (49/49)
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: 46 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Ap3m2 G A 8: 23,298,483 (GRCm39) probably benign Het
Apol11a T A 15: 77,401,131 (GRCm39) I206N probably damaging Het
Arfgap3 A G 15: 83,197,764 (GRCm39) S331P possibly damaging Het
Arhgef16 A C 4: 154,375,769 (GRCm39) L75R probably damaging Het
Cfi T C 3: 129,666,699 (GRCm39) V474A probably damaging Het
Dhx8 T C 11: 101,643,145 (GRCm39) V739A probably damaging Het
Dpy19l2 T A 9: 24,495,798 (GRCm39) H640L probably benign Het
Eif4g3 T A 4: 137,824,181 (GRCm39) M57K probably damaging Het
Emilin2 A G 17: 71,562,112 (GRCm39) probably null Het
Epc1 T C 18: 6,452,366 (GRCm39) E281G possibly damaging Het
Fancd2 G T 6: 113,555,366 (GRCm39) S1125I probably damaging Het
Fh1 G A 1: 175,435,385 (GRCm39) P366L probably null Het
Gata3 A T 2: 9,868,007 (GRCm39) S316T probably damaging Het
Hmcn1 A T 1: 150,532,992 (GRCm39) S3064T possibly damaging Het
Inpp5d A T 1: 87,597,407 (GRCm39) T193S probably benign Het
Inpp5d A T 1: 87,609,280 (GRCm39) I277F probably damaging Het
Itga5 T C 15: 103,260,044 (GRCm39) D616G probably damaging Het
Jade1 T A 3: 41,546,242 (GRCm39) V89E probably damaging Het
Lrrc19 G A 4: 94,527,590 (GRCm39) P207L probably damaging Het
Maea A G 5: 33,520,040 (GRCm39) D147G probably damaging Het
Muc6 T A 7: 141,214,437 (GRCm39) E2767V possibly damaging Het
Myom2 A G 8: 15,134,556 (GRCm39) Y453C probably damaging Het
Naip2 G A 13: 100,291,537 (GRCm39) probably benign Het
Naip2 A T 13: 100,291,529 (GRCm39) D1136E probably benign Het
Nap1l1 A G 10: 111,330,681 (GRCm39) D362G probably damaging Het
Nap1l4 C T 7: 143,091,953 (GRCm39) probably null Het
Nudt21 A C 8: 94,755,461 (GRCm39) probably null Het
Nufip1 A G 14: 76,372,310 (GRCm39) N475D probably benign Het
Pcdhb8 A G 18: 37,489,756 (GRCm39) D478G probably damaging Het
Pla2g4d A G 2: 120,114,648 (GRCm39) S28P probably damaging Het
Polr2j C A 5: 136,148,882 (GRCm39) N29K probably damaging Het
Ppp2r2a A G 14: 67,276,318 (GRCm39) probably benign Het
Ptprk A G 10: 28,427,647 (GRCm39) D742G probably damaging Het
Pum2 A G 12: 8,763,524 (GRCm39) D227G probably benign Het
Rfxank C A 8: 70,586,953 (GRCm39) R221L possibly damaging Het
Shank3 C A 15: 89,387,866 (GRCm39) Q317K probably benign Het
Slc22a17 A G 14: 55,145,447 (GRCm39) V460A probably damaging Het
Slc39a11 G T 11: 113,450,361 (GRCm39) D41E probably damaging Het
Spag17 T C 3: 99,846,679 (GRCm39) S68P possibly damaging Het
Sstr5 C T 17: 25,710,272 (GRCm39) C319Y possibly damaging Het
Stk17b G T 1: 53,796,749 (GRCm39) D339E probably damaging Het
Tagln2 A G 1: 172,332,788 (GRCm39) D25G probably benign Het
Ttn C T 2: 76,625,194 (GRCm39) V13417I probably benign Het
Vps50 A G 6: 3,545,568 (GRCm39) E334G possibly damaging Het
Zfp316 T C 5: 143,249,849 (GRCm39) E138G unknown Het
Zfp879 T A 11: 50,724,376 (GRCm39) T227S 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
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
R1740:Lamb2 UTSW 9 108,359,127 (GRCm39) missense probably damaging 1.00
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'- TTCAGGATGGAGTGGGCCTCAG -3'
(R):5'- CGTCGGGAGTCACACAGGAAAC -3'

Sequencing Primer
(F):5'- TGGGCCTCAGGAGAACCAG -3'
(R):5'- ACACAGGAAACACTTCTTTTCGTC -3'
Posted On 2014-04-13