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PDOC00762
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1995-07-26
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* Serum amyloid A proteins signature *
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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).