Seroatlas · Human Serome Atlas

ICAM2

Intercellular adhesion molecule 2

Also known as: CD102, ICAM2_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
P13598
Gene
ICAM2
Ensembl
ENSG00000108622
Chromosome
17
Canonical length
275 aa
Protein class
CD markers, Plasma proteins, Predicted intracellular proteins, Predicted membrane proteins
Subcellular location
Plasma membrane,Cytosol

OverviewNCBI Gene

The protein encoded by this gene is a member of the intercellular adhesion molecule (ICAM) family. All ICAM proteins are type I transmembrane glycoproteins, contain 2-9 immunoglobulin-like C2-type domains, and bind to the leukocyte adhesion LFA-1 protein. This protein may play a role in lymphocyte recirculation by blocking LFA-1-dependent cell adhesion. It mediates adhesive interactions important for antigen-specific immune response, NK-cell mediated clearance, lymphocyte recirculation, and other cellular interactions important for immune response and surveillance. Several transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

275 residues, UniProt reviewed canonical sequence.

>P13598|ICAM2
     1  MSSFGYRTLT VALFTLICCP GSDEKVFEVH VRPKKLAVEP KGSLEVNCST TCNQPEVGGL
    61  ETSLDKILLD EQAQWKHYLV SNISHDTVLQ CHFTCSGKQE SMNSNVSVYQ PPRQVILTLQ
   121  PTLVAVGKSF TIECRVPTVE PLDSLTLFLF RGNETLHYET FGKAAPAPQE ATATFNSTAD
   181  REDGHRNFSC LAVLDLMSRG GNIFHKHSAP KMLEIYEPVS DSQMVIIVTV VSVLLSLFVT
   241  SVLLCFIFGQ HLRQQRMGTY GVRAAWRRLP QAFRP

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against ICAM2 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)
0.38
Highest tissue expression
157 nTPM

Expression across tissuesHPA

Tissue

  • spleen: 157 nTPM
  • heart muscle: 97 nTPM
  • adipose tissue: 91 nTPM
  • lung: 79 nTPM
  • breast: 76 nTPM
  • placenta: 75 nTPM

Single-cell type

  • platelets: 608 nCPM
  • vascular endothelial cells: 199 nCPM
  • plasma cells: 136 nCPM
  • megakaryocytes: 111 nCPM
  • lymphatic endothelial cells: 102 nCPM
  • nk-cells: 84 nCPM

Immune cell

  • non-classical monocyte: 528 nTPM
  • total PBMC: 502 nTPM
  • intermediate monocyte: 465 nTPM
  • T-reg: 452 nTPM
  • basophil: 447 nTPM
  • naive CD4 T-cell: 402 nTPM

Brain region

  • thalamus: 24 nTPM
  • pons: 21 nTPM
  • medulla oblongata: 19 nTPM
  • spinal cord: 17 nTPM
  • midbrain: 16 nTPM
  • hypothalamus: 16 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
0.41
DepMap mean gene effect
0.15
DepMap dependency class
none

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

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of ICAM2 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 ICAM2 as an antibody target. Whether an autoantibody or antibody against ICAM2 could matter depends on whether native ICAM2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

ICAM2 is annotated at the cell surface, where native ICAM2 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 ICAM2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/ICAM2. 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).

Loading the interactive Seroatlas protein explorer...