Gene Information
Gene NameCAGA
OrganismHomo sapiens (Human)
Gene Length93
Protein NamesProtein S100-A8 (Calgranulin-A) (Calprotectin L1L subunit) (Cystic fibrosis antigen) (CFAG) (Leukocyte L1 complex light chain) (Migration inhibitory factor-related protein 8) (MRP-8) (p8) (S100 calcium-binding protein A8) (Urinary stone protein band A)
Target NameNA
Target TypeNA
Gene AgeNA
Evolutionary StageNA
AlphaFoldDBP05109
Gene CardS100A8
Uniprot IDP05109
PfamPF01023
In ASDno
Allosteric PredictionNA
Ortholog in AnimalsNA
OhnologsNA
ParalogsNA
TissueNA
Tissue SpecificityCalprotectin (S100A8/9) is predominantly expressed in myeloid cells. Except for inflammatory conditions, the expression is restricted to a specific stage of myeloid differentiation since both proteins are expressed in circulating neutrophils and monocytes but are absent in normal tissue macrophages and lymphocytes. Under chronic inflammatory conditions, such as psoriasis and malignant disorders, also expressed in the epidermis. Found in high concentrations at local sites of inflammation or in the serum of patients with inflammatory diseases such as rheumatoid, cystic fibrosis, inflammatory bowel disease, Crohn's disease, giant cell arteritis, cystic fibrosis, Sjogren's syndrome, systemic lupus erythematosus, and progressive systemic sclerosis. Involved in the formation and deposition of amyloids in the aging prostate known as corpora amylacea inclusions. Strongly up-regulated in many tumors, including gastric, esophageal, colon, pancreatic, bladder, ovarian, thyroid, breast and skin cancers. {ECO:0000269|PubMed:15598812, ECO:0000269|PubMed:33388094, ECO:0000269|PubMed:9083090}.
Pharmacological Animal ModelsNULL(Chimpanzee);NULL(Mouse);0.003490(Rat);0.04(Rabbit)
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1MR8  (X-ray  1.90A  1XK4  (X-ray  1.80A  4GGF  (X-ray  1.60A  4XJK  (X-ray  1.76A  5HLO  (X-ray  2.10A  5HLV  (X-ray  2.20A  5W1F  (X-ray  2.60A  6DS2  (X-ray  2.10A 
DBSNP NA 
Subcellular location [CC]Secreted. Cytoplasm. Cytoplasm, cytoskeleton. Cell membrane;
Peripheral membrane protein. Note=Predominantly localized in the cytoplasm. Upon elevation of the intracellular calcium level, translocated from the cytoplasm to the cytoskeleton and the cell membrane. Upon neutrophil activation or endothelial adhesion of monocytes, is secreted via a microtubule-mediated, alternative pathway.
Mouse PG classificationNA
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