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- * Tyrosine sulfatation site *
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-
- The consensus features of a tyrosine sulfatation site have been described in
- recent reviews [1,2]:
-
- - The presence of an acidic (Glu or Asp) amino acid within two residues of
- the tyrosine (typically at -1).
- - The presence of at least three acidic residues from -5 to +5.
- - No more than one basic residue and three hydrophobic residues from -5 to
- +5.
- - Presence of turn-inducing amino acids: at least one Pro or Gly (the amino
- acids with the strongest turn potential) from -7 to -2 and from +1 to +7,
- or at least two or three Asp, Ser or Asn from -7 to +7.
- - Absence of disulfide-bonded cysteine residues from -7 to +7.
- - Absence of N-linked glycans near the tyrosine.
-
- It must be noted that tyrosine sulfatation is physiologically relevant only to
- proteins or domains passing through or located in the Golgi lumen.
-
- -Last update: October 1993 / Text revised.
-
- [ 1] Huttner W.B.
- Trends Biochem. Sci. 12:361-363(1987).
- [ 2] Rosenquist G.L., Nicholas H.B. Jr.
- Protein Sci. 2:215-222(1993).
-