Incidental Mutation 'R9702:Gp1bb'
ID 729636
Institutional Source Beutler Lab
Gene Symbol Gp1bb
Ensembl Gene ENSMUSG00000050761
Gene Name glycoprotein Ib, beta polypeptide
MMRRC Submission
Accession Numbers
Essential gene? Non essential (E-score: 0.000) question?
Stock # R9702 (G1)
Quality Score 225.009
Status Not validated
Chromosome 16
Chromosomal Location 18439069-18441153 bp(-) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) A to T at 18439884 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Leucine to Glutamine at position 70 (L70Q)
Ref Sequence ENSEMBL: ENSMUSP00000126292 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000051160] [ENSMUST00000096987] [ENSMUST00000167388] [ENSMUST00000231244] [ENSMUST00000231335] [ENSMUST00000231622] [ENSMUST00000231956] [ENSMUST00000232653]
AlphaFold P56400
Predicted Effect probably damaging
Transcript: ENSMUST00000051160
AA Change: L78Q

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000059270
Gene: ENSMUSG00000050761
AA Change: L78Q

low complexity region 7 32 N/A INTRINSIC
LRRNT 33 67 4.14e-11 SMART
low complexity region 75 94 N/A INTRINSIC
LRRCT 97 150 4.88e-14 SMART
transmembrane domain 159 181 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000096987
SMART Domains Protein: ENSMUSP00000094750
Gene: ENSMUSG00000072214

Pfam:Septin 41 321 1.2e-127 PFAM
Pfam:MMR_HSR1 46 190 5.1e-7 PFAM
low complexity region 355 369 N/A INTRINSIC
Predicted Effect probably damaging
Transcript: ENSMUST00000167388
AA Change: L70Q

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000126292
Gene: ENSMUSG00000050761
AA Change: L70Q

LRRNT 25 59 4.14e-11 SMART
low complexity region 67 86 N/A INTRINSIC
LRRCT 89 142 4.88e-14 SMART
transmembrane domain 151 173 N/A INTRINSIC
Predicted Effect probably benign
Transcript: ENSMUST00000231244
Predicted Effect probably benign
Transcript: ENSMUST00000231335
Predicted Effect probably benign
Transcript: ENSMUST00000231622
Predicted Effect probably benign
Transcript: ENSMUST00000231956
Predicted Effect probably benign
Transcript: ENSMUST00000232653
Coding Region Coverage
  • 1x: 100.0%
  • 3x: 99.9%
  • 10x: 99.7%
  • 20x: 98.9%
Validation Efficiency
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] Platelet glycoprotein Ib (GPIb) is a heterodimeric transmembrane protein consisting of a disulfide-linked 140 kD alpha chain and 22 kD beta chain. It is part of the GPIb-V-IX system that constitutes the receptor for von Willebrand factor (VWF), and mediates platelet adhesion in the arterial circulation. GPIb alpha chain provides the VWF binding site, and GPIb beta contributes to surface expression of the receptor and participates in transmembrane signaling through phosphorylation of its intracellular domain. Mutations in the GPIb beta subunit have been associated with Bernard-Soulier syndrome, velocardiofacial syndrome and giant platelet disorder. The 206 amino acid precursor of GPIb beta is synthesized from a 1.0 kb mRNA expressed in plateletes and megakaryocytes. A 411 amino acid protein arising from a longer, unspliced transcript in endothelial cells has been described; however, the authenticity of this product has been questioned. Yet another less abundant GPIb beta mRNA species of 3.5 kb, expressed in nonhematopoietic tissues such as endothelium, brain and heart, was shown to result from inefficient usage of a non-consensus polyA signal in the neighboring upstream gene (SEPT5, septin 5). In the absence of polyadenylation from its own imperfect site, the SEPT5 gene produces read-through transcripts that use the consensus polyA signal of this gene. [provided by RefSeq, Dec 2010]
PHENOTYPE: Mice homozygous for disruptions in this gene have a significantly smaller than normal number of abnormally large platelets. They also display a severe bleeding phenotype. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 36 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Abca6 A G 11: 110,107,378 (GRCm39) Y746H probably damaging Het
Adgrv1 T A 13: 81,684,483 (GRCm39) I1073F possibly damaging Het
Ankrd6 C T 4: 32,810,202 (GRCm39) R493H possibly damaging Het
Apob G T 12: 8,057,559 (GRCm39) A2014S probably damaging Het
Bdnf A T 2: 109,554,117 (GRCm39) M164L possibly damaging Het
Ccdc187 C T 2: 26,172,222 (GRCm39) V287M unknown Het
Cd164 G A 10: 41,404,818 (GRCm39) R192Q probably damaging Het
Cd84 T C 1: 171,700,498 (GRCm39) V205A probably benign Het
Cfap161 T A 7: 83,442,652 (GRCm39) M54L probably benign Het
Crim1 T A 17: 78,681,516 (GRCm39) V990E probably damaging Het
Dsc1 A G 18: 20,227,685 (GRCm39) F518L probably benign Het
Esyt1 G A 10: 128,356,607 (GRCm39) S346L probably damaging Het
Fbxo30 G T 10: 11,166,382 (GRCm39) C368F probably benign Het
Gas2l3 C T 10: 89,249,943 (GRCm39) A392T probably benign Het
Gfra4 T A 2: 130,884,539 (GRCm39) S22C probably benign Het
Gm11992 T G 11: 9,006,568 (GRCm39) V166G probably benign Het
Gtf2i T C 5: 134,275,415 (GRCm39) T707A probably benign Het
Inpp5f A C 7: 128,278,515 (GRCm39) D435A possibly damaging Het
Kynu T A 2: 43,479,469 (GRCm39) M121K probably damaging Het
Ldb3 A G 14: 34,299,090 (GRCm39) V178A probably benign Het
Lrrc31 A G 3: 30,735,226 (GRCm39) L350P probably damaging Het
Mfsd14b C A 13: 65,221,414 (GRCm39) V293L probably benign Het
Mrps23 C T 11: 88,100,998 (GRCm39) T121M probably damaging Het
Nlrp4c T A 7: 6,068,801 (GRCm39) V234E probably benign Het
Or51f1e T C 7: 102,747,343 (GRCm39) Y132H probably damaging Het
Pign A T 1: 105,485,212 (GRCm39) D782E probably damaging Het
Rab11b C A 17: 33,968,026 (GRCm39) R82L possibly damaging Het
Sema3c T C 5: 17,858,828 (GRCm39) S76P probably damaging Het
Slc28a2b T A 2: 122,354,012 (GRCm39) I546N probably damaging Het
Sobp T C 10: 42,897,944 (GRCm39) N547S probably benign Het
Tigd3 G A 19: 5,942,836 (GRCm39) T98M probably damaging Het
Tox T G 4: 6,697,418 (GRCm39) M462L probably benign Het
Vmn1r158 T A 7: 22,490,065 (GRCm39) Q48L probably benign Het
Vps8 A G 16: 21,462,883 (GRCm39) T1383A probably benign Het
Vwa1 G A 4: 155,857,336 (GRCm39) P154L probably damaging Het
Zfp108 C T 7: 23,960,195 (GRCm39) T262I probably benign Het
Other mutations in Gp1bb
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL02225:Gp1bb APN 16 18,439,650 (GRCm39) missense possibly damaging 0.79
IGL02956:Gp1bb APN 16 18,439,675 (GRCm39) missense probably benign 0.06
R4603:Gp1bb UTSW 16 18,439,893 (GRCm39) missense probably damaging 1.00
R4610:Gp1bb UTSW 16 18,439,893 (GRCm39) missense probably damaging 1.00
R7007:Gp1bb UTSW 16 18,439,689 (GRCm39) missense possibly damaging 0.73
R8418:Gp1bb UTSW 16 18,440,103 (GRCm39) missense unknown
R9622:Gp1bb UTSW 16 18,439,527 (GRCm39) missense probably benign 0.22
Predicted Primers PCR Primer

Sequencing Primer
Posted On 2022-10-06