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- **************************************
- * Serum amyloid A proteins signature *
- **************************************
-
- The serum amyloid A (SAA) proteins comprise a family of vertebrate proteins
- that associate predominantly with high density lipoproteins (HDL) [1,2]. The
- synthesis of certain members of the family is greatly increased (as much as a
- 1000 fold) in inflammation; thus making SAA a major acute phase reactant.
- While the major physiological function of SAA is unclear, prolonged elevation
- of plasma SAA levels, as in chronic inflammation, however, results in a
- pathological condition, called amyloidosis, which affects the liver, kidney
- and spleen and which is characterized by the highly insoluble accumulation of
- SAA in these tissues.
-
- SAA are proteins of about 110 amino acid residues. As a signature pattern, we
- selected the most highly conserved region, which is located in the central
- part of the sequence.
-
- -Consensus pattern: A-R-G-N-Y-[ED]-A-x-[QKR]-R-G-x-G-G-x-W-A
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: June 1994 / First entry.
-
- [ 1] Malle E., Steinmetz A., Raynes J.G.
- Atherosclerosis 102:131-146(1993).
- [ 2] Uhlar C.M., Burgess C.J., Sharp P.M., Whitehead A.S.
- Genomics 19:228-235(1994).
-