AOC2
Amine oxidase [copper-containing] 2
Also known as: AOC2_HUMAN, DAO2, RAO
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O75106
- Gene
- AOC2
- Ensembl
- ENSG00000131480
- Chromosome
- 17
- Canonical length
- 756 aa
- Protein class
- Enzymes, Metabolic proteins, Predicted intracellular proteins
- Quaternary structure
- Homodimer
OverviewNCBI Gene
Copper amine oxidases catalyze the oxidative conversion of amines to aldehydes and ammonia in the presence of copper and quinone cofactor. This gene shows high sequence similarity to copper amine oxidases from various species ranging from bacteria to mammals. The protein contains several conserved motifs including the active site of amine oxidases and the histidine residues that likely bind copper. It may be a critical modulator of signal transmission in retina, possibly by degrading the biogenic amines dopamine, histamine, and putrescine. This gene may be a candidate gene for hereditary ocular diseases. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
756 residues, UniProt reviewed canonical sequence.
>O75106|AOC2
1 MHLKIVLAFL ALSLITIFAL AYVLLTSPGG SSQPPHCPSV SHRAQPWPHP GQSQLFADLS
61 REELTAVMRF LTQRLGPGLV DAAQAQPSDN CIFSVELQLP PKAAALAHLD RGSPPPAREA
121 LAIVLFGGQP QPNVSELVVG PLPHPSYMRD VTVERHGGPL PYHRRPVLRA EFTQMWRHLK
181 EVELPKAPIF LSSTFNYNGS TLAAVHATPR GLRSGDRATW MALYHNISGV GLFLHPVGLE
241 LLLDHRALDP AHWTVQQVFY LGHYYADLGQ LEREFKSGRL EVVRVPLPPP NGASSLRSRN
301 SPGPLPPLQF SPQGSQYSVQ GNLVVSSLWS FTFGHGVFSG LRIFDVRFQG ERIAYEVSVQ
361 ECVSIYGADS PKTMLTRYLD SSFGLGRNSR GLVRGVDCPY QATMVDIHIL VGKGAVQLLP
421 GAVCVFEEAQ GLPLRRHHNY LQNHFYGGLA SSALVVRSVS SVGNYDYIWD FVLYPNGALE
481 GRVHATGYIN TAFLKGGEEG LLFGNRVGER VLGTVHTHAF HFKLDLDVAG LKNWVVAEDV
541 VFKPVAAPWN PEHWLQRPQL TRQVLGKEDL TAFSLGSPLP RYLYLASNQT NAWGHQRGYR
601 IQIHSPLGIH IPLESDMERA LSWGRYQLVV TQRKEEESQS SSIYHQNDIW TPTVTFADFI
661 NNETLLGEDL VAWVTASFLH IPHAEDIPNT VTLGNRVGFL LRPYNFFDED PSIFSPGSVY
721 FEKGQDAGLC SINPVACLPD LAACVPDLPP FSYHGFLocalizationUniProt · AlphaFold · HPA
Whether an antibody against AOC2 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Cell surface
- Secreted
- No
- Transmembrane segments
- 1
- Mean surface accessibility (rSASA)
- 0.25
- Highest tissue expression
- 5.5 nTPM
Expression across tissuesHPA
Tissue
- adipose tissue: 5.5 nTPM
- testis: 4.6 nTPM
- liver: 3.3 nTPM
- cerebellum: 2.7 nTPM
- breast: 2.6 nTPM
- basal ganglia: 2.4 nTPM
Single-cell type
- early spermatids: 37 nCPM
- late spermatids: 8.5 nCPM
- neutrophils: 6 nCPM
- adipocytes: 5.1 nCPM
- corticotrophs: 5.1 nCPM
- endometrial glandular cells: 4 nCPM
Immune cell
- neutrophil: 1.1 nTPM
- eosinophil: 0.2 nTPM
- MAIT T-cell: 0.1 nTPM
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- gdT-cell: 0 nTPM
Brain region
- cerebral cortex: 5.8 nTPM
- hippocampal formation: 5.2 nTPM
- basal ganglia: 4.8 nTPM
- hypothalamus: 4.7 nTPM
- pons: 4.7 nTPM
- white matter: 4.3 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 1.25
- gnomAD pLI
- 0
- gnomAD missense Z
- -1.22
- DepMap mean gene effect
- -0.11
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Copper amine oxidase
- Copper amine oxidase, catalytic domain
- Copper amine oxidase, N2-terminal
- Copper amine oxidase, N3-terminal
- Copper amine oxidase, N-terminal
- Copper amine oxidase, catalytic domain superfamily
- Copper amine oxidase, copper-binding site
- Copper amine oxidase, TPQ-binding site
- Copper amine oxidase, enzyme domain
- Copper amine oxidase, N2 domain
- Copper amine oxidase, N3 domain
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads AOC2 as an antibody target. Whether an autoantibody or antibody against AOC2 could matter depends on whether native AOC2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
AOC2 is annotated at the cell surface, where native AOC2 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label AOC2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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