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SAA1 serum amyloid A1 [ Homo sapiens (human) ]

Gene ID: 6288, updated on 19-Sep-2021

Summary

Official Symbol
SAA1provided by HGNC
Official Full Name
serum amyloid A1provided by HGNC
Primary source
HGNC:HGNC:10513
See related
Ensembl:ENSG00000173432 MIM:104750
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
SAA; PIG4; SAA2; TP53I4
Summary
This gene encodes a member of the serum amyloid A family of apolipoproteins. The encoded preproprotein is proteolytically processed to generate the mature protein. This protein is a major acute phase protein that is highly expressed in response to inflammation and tissue injury. This protein also plays an important role in HDL metabolism and cholesterol homeostasis. High levels of this protein are associated with chronic inflammatory diseases including atherosclerosis, rheumatoid arthritis, Alzheimer's disease and Crohn's disease. This protein may also be a potential biomarker for certain tumors. Finally, antimicrobial activity against S. aureus and E. coli resides in the N-terminal portion of the mature protein. Alternate splicing results in multiple transcript variants that encode the same protein. A pseudogene of this gene is found on chromosome 11. [provided by RefSeq, Jul 2020]
Expression
Biased expression in fat (RPKM 1382.7), liver (RPKM 1080.1) and 1 other tissue See more
Orthologs
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Genomic context

See SAA1 in Genome Data Viewer
Location:
11p15.1
Exon count:
4
Annotation release Status Assembly Chr Location
109.20210514 current GRCh38.p13 (GCF_000001405.39) 11 NC_000011.10 (18266264..18269967)
105.20201022 previous assembly GRCh37.p13 (GCF_000001405.25) 11 NC_000011.9 (18287811..18291514)

Chromosome 11 - NC_000011.10Genomic Context describing neighboring genes Neighboring gene SAA2-SAA4 readthrough Neighboring gene serum amyloid A2 Neighboring gene RNA, 5S ribosomal pseudogene 333 Neighboring gene RNA, 5S ribosomal pseudogene 334 Neighboring gene ST13, Hsp70 interacting protein pseudogene 5 Neighboring gene HPS5 biogenesis of lysosomal organelles complex 2 subunit 2 Neighboring gene general transcription factor IIH subunit 1 Neighboring gene uncharacterized LOC105376577

Genomic regions, transcripts, and products

Expression

  • Project title: HPA RNA-seq normal tissues
  • Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
  • BioProject: PRJEB4337
  • Publication: PMID 24309898
  • Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Phenotypes

Associated conditions

Description Tests
Genome-wide association study identifies two novel regions at 11p15.5-p13 and 1p31 with major impact on acute-phase serum amyloid A.
GeneReviews: Not available

HIV-1 interactions

Protein interactions

Protein Gene Interaction Pubs
Envelope surface glycoprotein gp120 env HIV-1 gp120-treated vaginal epithelial cells show upregulation of serum amyloid A1 (SAA1) expression as compared to untreated control PubMed

Go to the HIV-1, Human Interaction Database

Interactions

Products Interactant Other Gene Complex Source Pubs Description

General gene information

Markers

Homology

Clone Names

  • MGC111216

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables G protein-coupled receptor binding IDA
Inferred from Direct Assay
more info
PubMed 
enables heparin binding IEA
Inferred from Electronic Annotation
more info
 
Component Evidence Code Pubs
located_in cytoplasmic microtubule IDA
Inferred from Direct Assay
more info
PubMed 
located_in endocytic vesicle lumen TAS
Traceable Author Statement
more info
 
located_in extracellular exosome HDA PubMed 
located_in extracellular region NAS
Non-traceable Author Statement
more info
PubMed 
located_in extracellular region TAS
Traceable Author Statement
more info
 
part_of high-density lipoprotein particle IEA
Inferred from Electronic Annotation
more info
 

General protein information

Preferred Names
serum amyloid A-1 protein
Names
serum amyloid A protein
tumor protein p53 inducible protein 4

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

Genomic

  1. NG_021330.1 RefSeqGene

    Range
    4965..8717
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_000331.6NP_000322.3  serum amyloid A-1 protein preproprotein

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) represents the longest transcript. Variants 1, 2 and 3 encode the same protein.
    Source sequence(s)
    AC107948
    Consensus CDS
    CCDS7835.1
    Related
    ENSP00000384906.2, ENST00000405158.2
    Conserved Domains (1) summary
    pfam00277
    Location:23122
    SAA; Serum amyloid A protein
  2. NM_001178006.3NP_001171477.2  serum amyloid A-1 protein preproprotein

    Status: REVIEWED

    Description
    Transcript Variant: This variant (3) differs in the 5' UTR compared to variant 1. Variants 1, 2 and 3 encode the same protein.
    Source sequence(s)
    AC107948
    Consensus CDS
    CCDS7835.1
    Related
    ENSP00000436866.1, ENST00000532858.5
    Conserved Domains (1) summary
    pfam00277
    Location:23122
    SAA; Serum amyloid A protein
  3. NM_199161.5NP_954630.2  serum amyloid A-1 protein preproprotein

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2) differs in the 5' UTR compared to variant 1. Variants 1, 2 and 3 encode the same protein.
    Source sequence(s)
    AC107948
    Consensus CDS
    CCDS7835.1
    Related
    ENSP00000348918.4, ENST00000356524.9
    Conserved Domains (1) summary
    pfam00277
    Location:23122
    SAA; Serum amyloid A protein

RefSeqs of Annotated Genomes: Homo sapiens Updated Annotation Release 109.20210514

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p13 Primary Assembly

Genomic

  1. NC_000011.10 Reference GRCh38.p13 Primary Assembly

    Range
    18266264..18269967
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Reference GRCh38.p13 PATCHES

Genomic

  1. NW_021160006.1 Reference GRCh38.p13 PATCHES

    Range
    15090..18793
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)
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