Gene Information
Gene NameCD33
OrganismHomo sapiens (Human)
Gene Length364
Protein NamesMyeloid cell surface antigen CD33 (Sialic acid-binding Ig-like lectin 3) (Siglec-3) (gp67) (CD antigen CD33)
Target Namemyeloid cell surface antigen cd33
Target TypeSuccessful target
Gene Age544 ( ENSG00000105383 )
Evolutionary StageEumetazoa
AlphaFoldDBP20138
Gene CardCD33
Uniprot IDP20138
PfamPF00047; PF07686
In ASDno
Allosteric Predictionyes (0.215638625)
Ortholog in AnimalsAlpaca_ CD33 ( ortholog_one2one )
Macaque_ CD33 ( ortholog_one2one )
Mouse_ Cd33 ( ortholog_one2many )
Rat_ Cd33 ( ortholog_one2many )
OhnologsNA
ParalogsMAG, SIGLECL1, CD22, SIGLEC6, SIGLEC7, SIGLEC8, SIGLEC9, SIGLEC12, SIGLEC5, SIGLEC14, SIGLEC11, SIGLEC16, SIGLEC10, SIGLEC1, SIGLEC15, TMEM25
TissueNA
Tissue SpecificityMonocytic/myeloid lineage cells. In the brain, CD33 is mainly expressed on microglial cells.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 5IHB  (X-ray  2.24A  5J06  (X-ray  2.66A  5J0B  (X-ray  2.48A  6D48  (X-ray  1.78A  6D49  (X-ray  1.80A  6D4A  (X-ray  1.75A  6TL8  (X-ray  2.80A  7AW6  (X-ray  1.95A 
DBSNP rs12459419  rs35814802  rs2455069  rs34919259  rs4082929  rs988337  rs11882250  rs58981829  rs2271652  rs35112940  rs35632246 
Subcellular location [CC][Isoform CD33M]: Cell membrane {ECO:0000269|PubMed:10611343, ECO:0000269|PubMed:28747436};
Single-pass type I membrane protein.;
[Isoform CD33m]: Peroxisome {ECO:0000269|PubMed:28747436}. Note=CD33m isoform does not localize to cell surfaces but instead accumulates in peroxisomes. {ECO:0000269|PubMed:28747436}.
Mouse PG classificationNA
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