LGALS8
Galectin-8
Also known as: LEG8_HUMAN, PCTA-1
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O00214
- Gene
- LGALS8
- Ensembl
- ENSG00000116977
- Chromosome
- 1
- Canonical length
- 317 aa
- Protein class
- Predicted intracellular proteins
- Subcellular location
- Plasma membrane
- Quaternary structure
- Homodimer
OverviewNCBI Gene
This gene encodes a member of the galectin family. Galectins are beta-galactoside-binding animal lectins with conserved carbohydrate recognition domains. The galectins have been implicated in many essential functions including development, differentiation, cell-cell adhesion, cell-matrix interaction, growth regulation, apoptosis, and RNA splicing. This gene is widely expressed in tumoral tissues and seems to be involved in integrin-like cell interactions. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
317 residues, UniProt reviewed canonical sequence.
>O00214|LGALS8
1 MMLSLNNLQN IIYNPVIPFV GTIPDQLDPG TLIVIRGHVP SDADRFQVDL QNGSSMKPRA
61 DVAFHFNPRF KRAGCIVCNT LINEKWGREE ITYDTPFKRE KSFEIVIMVL KDKFQVAVNG
121 KHTLLYGHRI GPEKIDTLGI YGKVNIHSIG FSFSSDLQST QASSLELTEI SRENVPKSGT
181 PQLRLPFAAR LNTPMGPGRT VVVKGEVNAN AKSFNVDLLA GKSKDIALHL NPRLNIKAFV
241 RNSFLQESWG EEERNITSFP FSPGMYFEMI IYCDVREFKV AVNGVHSLEY KHRFKELSSI
301 DTLEINGDIH LLEVRSWLocalizationUniProt · AlphaFold · HPA
Whether an antibody against LGALS8 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
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.26
- Highest tissue expression
- 53 nTPM
Expression across tissuesHPA
Tissue
- testis: 53 nTPM
- heart muscle: 52 nTPM
- liver: 46 nTPM
- bone marrow: 43 nTPM
- spleen: 40 nTPM
- placenta: 39 nTPM
Single-cell type
- late spermatids: 345 nCPM
- early spermatids: 319 nCPM
- late primary spermatocytes: 269 nCPM
- syncytiotrophoblasts: 236 nCPM
- platelets: 188 nCPM
- kupffer cells: 187 nCPM
Immune cell
- basophil: 120 nTPM
- classical monocyte: 38 nTPM
- intermediate monocyte: 33 nTPM
- myeloid DC: 32 nTPM
- total PBMC: 25 nTPM
- non-classical monocyte: 24 nTPM
Brain region
- cerebral cortex: 30 nTPM
- pons: 30 nTPM
- medulla oblongata: 29 nTPM
- hypothalamus: 28 nTPM
- cerebellum: 28 nTPM
- white matter: 26 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about LGALS8.
Disease | ImmuneIEDB
Conditions an epitope on LGALS8 was assayed in.
- type 1 diabetes mellitus T cell
ReferencesPubMed · IEDB
Publications for LGALS8 from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.
Reference: AutoantibodyPubMed
2 publications
- Autoantibodies against galectin-8: their specificity, association with lymphopenia in systemic lupus erythematosus and detection in rheumatoid arthritis and acute inflammation.
2009 · Lupus · RCR 1 · 38 citations - [Antibodies against galectin-8 in patients with systemic lupus erythematosus].
2006 · Rev Med Chil · RCR 0.2 · 9 citations
Reference: T cellIEDB
1 publication
- The antigen presentation landscape of cytokine-stressed human pancreatic islets.
2025 · Cell Rep · RCR 2.5 · 8 citations
Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. IEDB — curated epitope assays from the Immune Epitope Database (Vita et al., Nucleic Acids Research 2019). Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.
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)
- 1.06
- gnomAD pLI
- 0
- gnomAD missense Z
- -0.03
- DepMap mean gene effect
- 0.13
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 9% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- cellular response to virus
- lymphatic endothelial cell migration
- plasma cell differentiation
- T cell costimulation
- xenophagy
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of LGALS8 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 LGALS8 as an antibody target. Whether an autoantibody or antibody against LGALS8 could matter depends on whether native LGALS8 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
LGALS8 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 LGALS8 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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