PF15096

G6b-B extracellular V-set Ig-like domain

Pfam entry
Member databasePfam
Pfam typedomain
Short nameG6B
ClanE-set
Author Eberhardt R;0000-0001-6152-1369 Coggill P;0000-0001-5731-1588 Bateman A;0000-0002-6982-4660 Hetherington K;
Sequence Ontology0000417

Description

G6b-B is a unique platelet ITIM-containing receptor that is highly expressed in mature megakaryocytes and platelets
[1]
. t is a type I transmembrane protein that consists of a single N-glycosylated immunoglobulin-variable (IgV)-like domain in its extracellular region, a single transmembrane domain and a cytoplasmic tail containing an ITIM and an immunoreceptor tyrosine-based switch motif (ITSM)
[1]
. The extracellular matrix heparan sulfate (HS) proteoglycan perlecan was identified as a G6b-B binding partner
[1]
. Subsequent in vitro biochemical studies and a cell-based genetic screen demonstrated that the interaction is specifically mediated by the HS chains of perlecan
[1]
. This entry represents the N-terminal extracellular HS binding domain.

References

1.Heparan sulfates are critical regulators of the inhibitory megakaryocyte-platelet receptor G6b-B. Vogtle T, Sharma S, Mori J, Nagy Z, Semeniak D, Scandola C, Geer MJ, Smith CW, Lane J, Pollack S, Lassila R, Jouppila A, Barr AJ, Ogg DJ, Howard TD, McMiken HJ, Warwicker J, Geh C, Rowlinson R, Abbott WM, Eckly A, Schulze H, Wright GJ, Mazharian A, Futterer K, Rajesh S, Douglas MR, Senis YA. Elife 8, e46840, (2019). PMID: 31436532

Wikipedia

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