Glycoprotein Ib (platelet), beta polypeptide (GP1BB) also known as CD42c (Cluster of Differentiation 42c), is a protein that in humans is encoded by the GP1BB gene.[1]
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 Glycoprotein Ib-IX-V Receptor Complex (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 within a separate gene (septin 5) located upstream of this gene. In the absence of polyadenylation from its own imperfect site, the septin 5 gene uses the consensus polyA signal of this gene.[1]
↑Calverley DC, Kavanagh TJ, Roth GJ (February 1998). "Human signaling protein 14-3-3zeta interacts with platelet glycoprotein Ib subunits Ibalpha and Ibbeta". Blood. 91 (4): 1295–303. PMID9454760.
↑Du X, Harris SJ, Tetaz TJ, Ginsberg MH, Berndt MC (July 1994). "Association of a phospholipase A2 (14-3-3 protein) with the platelet glycoprotein Ib-IX complex". J. Biol. Chem. 269 (28): 18287–90. PMID8034572.
↑Feng S, Christodoulides N, Reséndiz JC, Berndt MC, Kroll MH (January 2000). "Cytoplasmic domains of GpIbalpha and GpIbbeta regulate 14-3-3zeta binding to GpIb/IX/V". Blood. 95 (2): 551–7. PMID10627461.
Further reading
Kunishima S, Kamiya T, Saito H (2002). "Genetic abnormalities of Bernard-Soulier syndrome". Int. J. Hematol. 76 (4): 319–27. doi:10.1007/BF02982690. PMID12463594.
Clemetson KJ (2007). "A short history of platelet glycoprotein Ib complex". Thromb. Haemost. 98 (1): 63–8. doi:10.1160/th07-05-0327. PMID17597992.
Wardell MR, Reynolds CC, Berndt MC, Wallace RW, Fox JE (1989). "Platelet glycoprotein Ib beta is phosphorylated on serine 166 by cyclic AMP-dependent protein kinase". J. Biol. Chem. 264 (26): 15656–61. PMID2504723.
Andrews RK, Booth WJ, Gorman JJ, Castaldi PA, Berndt MC (1989). "Purification of botrocetin from Bothrops jararaca venom. Analysis of the botrocetin-mediated interaction between von Willebrand factor and the human platelet membrane glycoprotein Ib-IX complex". Biochemistry. 28 (21): 8317–26. doi:10.1021/bi00447a009. PMID2557900.
Berndt MC, Gregory C, Kabral A, Zola H, Fournier D, Castaldi PA (1985). "Purification and preliminary characterization of the glycoprotein Ib complex in the human platelet membrane". Eur. J. Biochem. 151 (3): 637–49. doi:10.1111/j.1432-1033.1985.tb09152.x. PMID3161731.
Canfield VA, Ozols J, Nugent D, Roth GJ (1987). "Isolation and characterization of the alpha and beta chains of human platelet glycoprotein Ib". Biochem. Biophys. Res. Commun. 147 (2): 526–34. doi:10.1016/0006-291X(87)90963-6. PMID3632685.
Meyer SC, Fox JE (1995). "Interaction of platelet glycoprotein V with glycoprotein Ib-IX regulates expression of the glycoproteins and binding of von Willebrand factor to glycoprotein Ib-IX in transfected cells". J. Biol. Chem. 270 (24): 14693–9. doi:10.1074/jbc.270.24.14693. PMID7782333.
Yagi M, Edelhoff S, Disteche CM, Roth GJ (1994). "Structural characterization and chromosomal location of the gene encoding human platelet glycoprotein Ib beta". J. Biol. Chem. 269 (26): 17424–7. PMID8021244.
Du X, Harris SJ, Tetaz TJ, Ginsberg MH, Berndt MC (1994). "Association of a phospholipase A2 (14-3-3 protein) with the platelet glycoprotein Ib-IX complex". J. Biol. Chem. 269 (28): 18287–90. PMID8034572.
Ludlow LB, Schick BP, Budarf ML, Driscoll DA, Zackai EH, Cohen A, Konkle BA (1996). "Identification of a mutation in a GATA binding site of the platelet glycoprotein Ibbeta promoter resulting in the Bernard-Soulier syndrome". J. Biol. Chem. 271 (36): 22076–80. doi:10.1074/jbc.271.36.22076. PMID8703016.
Kunishima S, Lopez JA, Kobayashi S, Imai N, Kamiya T, Saito H, Naoe T (1997). "Missense mutations of the glycoprotein (GP) Ib beta gene impairing the GPIb alpha/beta disulfide linkage in a family with giant platelet disorder". Blood. 89 (7): 2404–12. PMID9116284.
Andrews RK, Harris SJ, McNally T, Berndt MC (1998). "Binding of purified 14-3-3 zeta signaling protein to discrete amino acid sequences within the cytoplasmic domain of the platelet membrane glycoprotein Ib-IX-V complex". Biochemistry. 37 (2): 638–47. doi:10.1021/bi970893g. PMID9425086.
Longhurst CM, White MM, Wilkinson DA, Jennings LK (1999). "A CD9, alphaIIbbeta3, integrin-associated protein, and GPIb/V/IX complex on the surface of human platelets is influenced by alphaIIbbeta3 conformational states". Eur. J. Biochem. 263 (1): 104–11. doi:10.1046/j.1432-1327.1999.00467.x. PMID10429193.
Feng S, Christodoulides N, Reséndiz JC, Berndt MC, Kroll MH (2000). "Cytoplasmic domains of GpIbalpha and GpIbbeta regulate 14-3-3zeta binding to GpIb/IX/V". Blood. 95 (2): 551–7. PMID10627461.
Moran N, Morateck PA, Deering A, Ryan M, Montgomery RR, Fitzgerald DJ, Kenny D (2000). "Surface expression of glycoprotein ib alpha is dependent on glycoprotein ib beta: evidence from a novel mutation causing Bernard-Soulier syndrome". Blood. 96 (2): 532–9. PMID10887115.
Kasirer-Friede A, Ware J, Leng L, Marchese P, Ruggeri ZM, Shattil SJ (2002). "Lateral clustering of platelet GP Ib-IX complexes leads to up-regulation of the adhesive function of integrin alpha IIbbeta 3". J. Biol. Chem. 277 (14): 11949–56. doi:10.1074/jbc.M108727200. PMID11812775.