ATL2
Atlastin-2
Also known as: ARL6IP2, ATLA2_HUMAN, atlastin2
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q8NHH9
- Gene
- ATL2
- Ensembl
- ENSG00000119787
- Chromosome
- 2
- Canonical length
- 583 aa
- Protein class
- Predicted intracellular proteins, Predicted membrane proteins, Transporters
- Subcellular location
- Endoplasmic reticulum
- Quaternary structure
- Homodimer
OverviewNCBI Gene
Enables identical protein binding activity. Involved in Golgi organization; endoplasmic reticulum tubular network membrane organization; and protein homooligomerization. Located in endoplasmic reticulum tubular network membrane. [provided by Alliance of Genome Resources, Apr 2025]
Canonical amino-acid sequenceUniProt
583 residues, UniProt reviewed canonical sequence.
>Q8NHH9|ATL2
1 MAEGDEAARG QQPHQGLWRR RRTSDPSAAV NHVSSTTSLG ENYEDDDLVN SDEVMKKPCP
61 VQIVLAHEDD HNFELDEEAL EQILLQEHIR DLNIVVVSVA GAFRKGKSFL LDFMLRYMYN
121 KDSQSWIGGN NEPLTGFTWR GGCERETTGI QVWNEVFVID RPNGTKVAVL LMDTQGAFDS
181 QSTIKDCATV FALSTMTSSV QVYNLSQNIQ EDDLQHLQLF TEYGRLAMEE IYQKPFQTLM
241 FLIRDWSYPY EHSYGLEGGK QFLEKRLQVK QNQHEELQNV RKHIHNCFSN LGCFLLPHPG
301 LKVATNPSFD GRLKDIDEDF KRELRNLVPL LLAPENLVEK EISGSKVTCR DLVEYFKAYI
361 KIYQGEELPH PKSMLQATAE ANNLAAVAGA RDTYCKSMEQ VCGGDKPYIA PSDLERKHLD
421 LKEVAIKQFR SVKKMGGDEF CRRYQDQLEA EIEETYANFI KHNDGKNIFY AARTPATLFA
481 VMFAMYIISG LTGFIGLNSI AVLCNLVMGL ALIFLCTWAY VKYSGEFREI GTVIDQIAET
541 LWEQVLKPLG DNLMEENIRQ SVTNSIKAGL TDQVSHHARL KTDLocalizationUniProt · AlphaFold · HPA
Whether an antibody against ATL2 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
- Other membrane
- Secreted
- No
- Transmembrane segments
- 2
- Mean surface accessibility (rSASA)
- 0.33
- Highest tissue expression
- 52 nTPM
Expression across tissuesHPA
Tissue
- thyroid gland: 52 nTPM
- skeletal muscle: 49 nTPM
- salivary gland: 49 nTPM
- skin: 45 nTPM
- colon: 45 nTPM
- tongue: 43 nTPM
Single-cell type
- lacrimal acinar cells: 322 nCPM
- salivary ionocytes: 281 nCPM
- salivary acinar cells: 251 nCPM
- adrenal cortex cells: 237 nCPM
- myonuclei: 236 nCPM
- transitional alveolar cells: 231 nCPM
Immune cell
- eosinophil: 11 nTPM
- naive B-cell: 4.3 nTPM
- naive CD4 T-cell: 4.1 nTPM
- MAIT T-cell: 3.8 nTPM
- non-classical monocyte: 3.8 nTPM
- T-reg: 3.6 nTPM
Brain region
- cerebellum: 49 nTPM
- basal ganglia: 37 nTPM
- cerebral cortex: 31 nTPM
- choroid plexus: 30 nTPM
- hypothalamus: 28 nTPM
- white matter: 25 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)
- 0.5
- gnomAD pLI
- 0.01
- gnomAD missense Z
- 0.39
- DepMap mean gene effect
- -0.67
- DepMap dependency class
- common
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- endoplasmic reticulum membrane fusion
- endoplasmic reticulum organization
- endoplasmic reticulum tubular network membrane organization
- protein homooligomerization
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Guanylate-binding protein/Atlastin, C-terminal
- Guanylate-binding protein, N-terminal
- P-loop containing nucleoside triphosphate hydrolase
- GB1/RHD3-type guanine nucleotide-binding (G) domain
- Guanylate-binding protein, C-terminal domain superfamily
- Guanylate-binding protein, N-terminal domain
- Guanylate-binding protein, C-terminal domain
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of ATL2 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads ATL2 as an antibody target. Whether an autoantibody or antibody against ATL2 could matter depends on whether native ATL2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
ATL2 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label ATL2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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