金山科研平台，产品价格货期咨询微信：jinshanbio Molecule Information: Serum Amyloid A1 Aliases: PIG4; SAA1 Entrez Gene IDs: 6288 (Human); 20208 (Mouse) Background: Serum Amyloid A4 Serum amyloid A proteins (SAAs) are a family of homologous apolipoproteins of high density lipoprotein (HDL). They can be divided into two groups. The first group consists of the acute phase SAA1 and SAA2 that associate with HDL during inflammation and remodel the HDL particle by displacing apolipoprotein A1. The second group consists of constitutively expressed SAA4 and SAA5 that exist as minor apolipoproteins on HDL but make up more than 90% of the total SAA during homeostasis.