Seroatlas · Human Serome Atlas

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 LLEVRSW

LocalizationUniProt · 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.

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: T cellIEDB

1 publication

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

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.

Canonical record: https://seroatlas.com/gene/LGALS8. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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