PROSITE: PDOC00021 (documentation)
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* EGF-like domain signatures *
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A sequence of about thirty to forty
amino-acid residues long found in the sequence of
epidermal growth factor (EGF) has been shown
[1 to 6] to be present, in a more or less conserved form, in a large
number of other, mostly animal proteins. The proteins currently known to
contain one or more copies of an EGF-like pattern are listed below.
- Bone morphogenic protein 1 (BMP-1), a protein which induces
cartilage and bone formation.
- Caenorhabditis elegans developmental proteins lin-12 (13 copies)
and glp-1 (10 copies).
- Calcium-dependent serine proteinase (CASP) which degrades the extracellular
matrix proteins type I and IV collagen and fibronectin (1 copy).
- Cell surface antigen 114/A10 (3 copies).
- Cell surface glycoprotein complex transmembrane subunit .
- Coagulation associated proteins C, Z (2 copies) and S (4 copies).
- Coagulation factors VII, IX, X and XII (2 copies).
- Complement C1r/C1s components (1 copy).
- Complement-activating component of Ra-reactive factor (RARF) (1
copy).
- Complement components C6, C7, C8 alpha and beta chains, and C9
(1 copy).
- Epidermal growth factor precursor (7-9 copies).
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x(4)-C-x(0,48)-C-x(3,12)-C-x(1,70)-C-x(1,6)-C-x(2)-G-a-x(0,21)-G-x(2)-C-x
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'C': conserved cysteine involved in a disulfide bond.
'G': often conserved glycine
'a': often conserved aromatic amino acid
'*': position of both patterns.
'x': any residue
-Consensus pattern: C-x-C-x(5)-G-x(2)-C
[The 3 C's are involved in disulfide bonds]
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