TGF-beta receptor family

Source: Wikipedia, the free encyclopedia.
Ser/Thr protein kinase, TGFB receptor
Identifiers
SymbolTGFb_receptor
SCOP2
1B6C / SCOPe / SUPFAM
Membranome1216

The transforming growth factor beta (TGFβ) receptors are a

NODAL.[1]

TGFβ family receptors

TGFβ family receptors are grouped into three types, type I, type II, and type III. There are seven type I receptors, termed the

activin-like receptors (ALK1–7), five type II receptors, and one type III receptor, for a total of 13 TGFβ superfamily receptors.[2][3] In the transduction pathway, ligand-bound type II receptors activate type I receptors by phosphorylation, which then autophosphorylate and bind SMAD.[4] The Type I receptors have a glycine-serine (GS, or TTSGSGSG) repeat motif of around 30 AA, a target of type II activity. At least three, and perhaps four to five of the serines and threonines in the GS domain, must be phosphorylated to fully activate TbetaR-1.[5]

Type I

Transforming growth factor beta type I GS-motif
Identifiers
SymbolTGF_beta_GS
PfamPF08515
InterProIPR003605
Available protein structures:
Pfam  structures / ECOD  
PDBRCSB PDB; PDBe; PDBj
PDBsumstructure summary
  • ALK1
    (ACVRL1)
  • ALK2
    (ACVR1A)
  • ALK3
    (BMPR1A)
  • ALK4
    (ACVR1B)
  • ALK5
    (TGFβR1)
  • ALK6
    (BMPR1B)
  • ALK7
    (ACVR1C)

Type II

Type III

Unlike the Type I and II receptors which are kinases, TGFBR3 has a

bFGF. It acts as a reservoir of ligand for TGF-beta receptors.[6][7]

References

  1. ^ "Prosite Documentation PDOC00223". Archived from the original on 2011-05-25. Retrieved 2006-07-01.
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