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    ITGAL integrin, alpha L (antigen CD11A (p180), lymphocyte function-associated antigen 1; alpha polypeptide) [ Homo sapiens ]

    Gene ID: 3683, updated on 19-May-2012

    Summary

    Official Symbol
    ITGALprovided by HGNC
    Official Full Name
    integrin, alpha L (antigen CD11A (p180), lymphocyte function-associated antigen 1; alpha polypeptide)provided by HGNC
    Primary source
    HGNC:6148
    See related
    Ensembl:ENSG00000005844; HPRD:01079; MIM:153370; Vega:OTTHUMG00000176964
    Gene type
    protein coding
    RefSeq status
    REVIEWED
    Organism
    Homo sapiens
    Lineage
    Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
    Also known as
    CD11A; LFA-1; LFA1A
    Summary
    ITGAL encodes the integrin alpha L chain. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. This I-domain containing alpha integrin combines with the beta 2 chain (ITGB2) to form the integrin lymphocyte function-associated antigen-1 (LFA-1), which is expressed on all leukocytes. LFA-1 plays a central role in leukocyte intercellular adhesion through interactions with its ligands, ICAMs 1-3 (intercellular adhesion molecules 1 through 3), and also functions in lymphocyte costimulatory signaling. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

    Genomic context

    Location :
    16p11.2
    Sequence :
    Chromosome: 16; NC_000016.9 (30483983..30534506)
    See ITGAL in Epigenomics, MapViewer

    Chromosome 16 - NC_000016.9Genomic Context describing neighboring genes Neighboring gene dCTP pyrophosphatase 1 Neighboring gene selenophosphate synthetase 2 Neighboring gene uncharacterized LOC100506928 Neighboring gene microRNA 4518 Neighboring gene zinc finger protein 768 Neighboring gene zinc finger protein 747

    Genomic regions, transcripts, and products

    Bibliography

    GeneRIFs: Gene References Into Functions What's a GeneRIF?

    HIV-1 protein interactions

    Protein Gene Interaction Pubs
    Envelope surface glycoprotein gp120 env HIV-1 replication is delayed in LFA-1 negative T cells after Dendritic cell (DC)-mediated transmission; activation of LFA-1 is crucial for efficient DC-mediated HIV-1 transmission, suggesting an interaction between LFA-1 and HIV-1 gp120 PubMed
    env Infectivity of an HIV-1 Matrix mutant that carries a suboptimal amount of HIV-1 gp120/41 is restored to a certain degree by the presence of ICAM-1 when infection is performed in cells expressing an activated form of its natural counter-ligand, LFA-1 PubMed
    env Cells treated with monoclonal antibodies to ICAM-1 and LFA-1 adhesion molecules show an impaired release of IFN after HIV-1 gp120 stimulation, suggesting a crucial role of cell-to-cell interactions in the process leading to IFN production PubMed
    env Anti-CD18 monoclonal antibodies completely block cell fusion between HIV-1 infected U-937 cells and MT-4 T cells, indicating participation of CD18, or of the protein complex CD11a-c/CD18, in addition to CD4, in the infection and cytopathic effect of HIV-1 PubMed
    env HIV-1 gp120 induces CD4 association with lymphocyte surface molecules CD3, CD11a, CD27, CD45RA, CD45RB, CD45RO, CD49d, CD38, CD26, CD59, CD95 and class I MHC molecules PubMed
    Envelope surface glycoprotein gp160, precursor env ICAM-1 promotes HIV-1 gp160-mediated syncytium formation, and the ICAM-1 contrareceptor LFA-1 attenuates the syncytium-inhibiting activity of virus-neutralizing monoclonal antibodies and soluble CD4 PubMed
    env HIV-1 gp160 downregulates lymphocyte function-associated antigen-1 (LFA-1)-dependent adhesion between CD4+ T cells and B cells; this downregulation is shown to be p56lck-dependent PubMed
    env Antibodies against cell surface molecules LFA-1, ICAM-1, HLA-DR, and CD28 inhibit the HIV-1 gp160-induced B cell differentiation response; gp160 also induces IL-6R and CD23 molecule expression on B cells PubMed
    env PI3-kinase activation induced by HIV-1 gp160 leads to downregulation of LFA-1-mediated T cell adhesion to B cells PubMed
    Nef nef Monoclonal antibodies to the cell surface molecule leukocyte function-associated molecule (LFA)-1 alpha inhibit the Nef-induced B-cell differentiation response, suggesting an interaction between Nef and LFA-1alpha PubMed
    Tat tat HIV-1 Tat inhibits the rise in intracellular free calcium concentration in Natural Killer (NK) cells upon cross-linking of the adhesion molecule CD11a and the activation molecule CD16, indicating Tat is involved in the impairment of NK cell function PubMed

    Go to the HIV-1, Human Protein Interaction Database

    Interactions

    Products Interactant Other Gene Complex Source Pubs Description
    NP_002200.1 NP_002829.2 PTPRC    BIND  PubMed CD11a interacts with CD45. 
    P20701 Q9Y624 F11R    HPRD  PubMed  
    P20701 P05362 ICAM1    HPRD  PubMed  
    P20701 P32942 ICAM3    HPRD  PubMed  
    P20701 Q9UMF0 ICAM5    HPRD  PubMed  
    P20701 P20701 ITGAL    HPRD  PubMed  
    P20701 P08575 PTPRC    HPRD  PubMed  
    P20701 Q96S59 RANBP9    HPRD  PubMed  
    BioGRID:109889 BioGRID:109935 CD82    BioGRID  PubMed Affinity Capture-Western 
    BioGRID:109889 BioGRID:116265 ESM1    BioGRID  PubMed Affinity Capture-Western 
    BioGRID:109889 BioGRID:109610 ICAM1    BioGRID  PubMed Co-crystal Structure; Reconstituted Complex 
    BioGRID:109889 BioGRID:109895 ITGB2    BioGRID  PubMed Affinity Capture-Western 
    BioGRID:109889 BioGRID:113164 UBC    BioGRID  PubMed Affinity Capture-MS 

    General gene information

    Markers

    Homology

    Pathways from BioSystems

    • Adaptive Immune System, organism-specific biosystem (from REACTOME)
      Adaptive Immune System, organism-specific biosystemAdaptive immunity refers to antigen-specific immune response efficiently involved in clearing the pathogens. The adaptive immune system is comprised of B and T lymphocytes that express receptors with...
    • CXCR3-mediated signaling events, organism-specific biosystem (from Pathway Interaction Database)
      CXCR3-mediated signaling events, organism-specific biosystem
      CXCR3-mediated signaling events
    • Cell adhesion molecules (CAMs), organism-specific biosystem (from KEGG)
      Cell adhesion molecules (CAMs), organism-specific biosystemCell adhesion molecules are (glyco)proteins expressed on the cell surface and play a critical role in a wide array of biologic processes that include hemostasis, the immune response, inflammation, em...
    • Cell adhesion molecules (CAMs), conserved biosystem (from KEGG)
      Cell adhesion molecules (CAMs), conserved biosystemCell adhesion molecules are (glyco)proteins expressed on the cell surface and play a critical role in a wide array of biologic processes that include hemostasis, the immune response, inflammation, em...
    • Cell surface interactions at the vascular wall, organism-specific biosystem (from REACTOME)
      Cell surface interactions at the vascular wall, organism-specific biosystemLeukocyte extravasation is a rigorously controlled process that guides white cell movement from the vascular lumen to sites of tissue inflammation. The powerful adhesive interactions that are require...
    • Epstein-Barr virus infection, organism-specific biosystem (from KEGG)
      Epstein-Barr virus infection, organism-specific biosystemEpstein-Barr virus (EBV) is a ubiquitous human herpesvirus that is associated with oncogenesis. EBV infection to primary human B lymphocytes leads to induction of EBV-specific HLA-restricted cytotoxi...
    • Epstein-Barr virus infection, conserved biosystem (from KEGG)
      Epstein-Barr virus infection, conserved biosystemEpstein-Barr virus (EBV) is a ubiquitous human herpesvirus that is associated with oncogenesis. EBV infection to primary human B lymphocytes leads to induction of EBV-specific HLA-restricted cytotoxi...
    • Focal Adhesion, organism-specific biosystem (from WikiPathways)
      Focal Adhesion, organism-specific biosystemCell-matrix adhesions play essential roles in important biological processes including cell motility, cell proliferation, cell differentiation, regulation of gene expression and cell survival. At the...
    • HTLV-I infection, organism-specific biosystem (from KEGG)
      HTLV-I infection, organism-specific biosystemHuman T-lymphotropic virus type 1 (HTLV-1) is a pathogenic retrovirus that is associated with adult T-cell leukemia/lymphoma (ATL). It is also strongly implicated in non-neoplastic chronic inflammato...
    • HTLV-I infection, conserved biosystem (from KEGG)
      HTLV-I infection, conserved biosystemHuman T-lymphotropic virus type 1 (HTLV-1) is a pathogenic retrovirus that is associated with adult T-cell leukemia/lymphoma (ATL). It is also strongly implicated in non-neoplastic chronic inflammato...
    • Hemostasis, organism-specific biosystem (from REACTOME)
      Hemostasis, organism-specific biosystemHemostasis is a physiological response that culminates in the arrest of bleeding from an injured vessel. Under normal conditions the vascular endothelium supports vasodilation, inhibits platelet adhe...
    • Immune System, organism-specific biosystem (from REACTOME)
      Immune System, organism-specific biosystemHumans are exposed to millions of potential pathogens daily, through contact, ingestion, and inhalation. Our ability to avoid infection depends on the adaptive immune system and during the first crit...
    • Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell, organism-specific biosystem (from REACTOME)
      Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell, organism-specific biosystemA number of receptors and cell adhesion molecules play a key role in modifying the response of cells of lymphoid origin (such as B-, T- and NK cells) to self and tumor antigens, as well as to pathoge...
    • Integrin cell surface interactions, organism-specific biosystem (from REACTOME)
      Integrin cell surface interactions, organism-specific biosystemThe extracellular matrix (ECM) is a network of macro-molecules that underlies all epithelia and endothelia and that surrounds all connective tissue cells. This matrix provides the mechanical strength...
    • Integrin-mediated cell adhesion, organism-specific biosystem (from WikiPathways)
      Integrin-mediated cell adhesion, organism-specific biosystemIntegrins are receptors that mediate attachment between a cell and the tissues surrounding it, which may be other cells or the extracellular matrix (ECM). They also play a role in cell signaling and ...
    • Leukocyte transendothelial migration, organism-specific biosystem (from KEGG)
      Leukocyte transendothelial migration, organism-specific biosystemLeukocyte migaration from the blood into tissues is vital for immune surveillance and inflammation. During this diapedesis of leukocytes, the leukocytes bind to endothelial cell adhesion molecules (C...
    • Leukocyte transendothelial migration, conserved biosystem (from KEGG)
      Leukocyte transendothelial migration, conserved biosystemLeukocyte migaration from the blood into tissues is vital for immune surveillance and inflammation. During this diapedesis of leukocytes, the leukocytes bind to endothelial cell adhesion molecules (C...
    • Malaria, organism-specific biosystem (from KEGG)
      Malaria, organism-specific biosystemPlasmodium protozoa are parasites that account for malaria infection. Sporozoite forms of the parasite are injected by mosquito bites under the skin and are carried to the liver where they develop in...
    • Malaria, conserved biosystem (from KEGG)
      Malaria, conserved biosystemPlasmodium protozoa are parasites that account for malaria infection. Sporozoite forms of the parasite are injected by mosquito bites under the skin and are carried to the liver where they develop in...
    • Natural killer cell mediated cytotoxicity, organism-specific biosystem (from KEGG)
      Natural killer cell mediated cytotoxicity, organism-specific biosystemNatural killer (NK) cells are lymphocytes of the innate immune system that are involved in early defenses against both allogeneic (nonself) cells and autologous cells undergoing various forms of stre...
    • Natural killer cell mediated cytotoxicity, conserved biosystem (from KEGG)
      Natural killer cell mediated cytotoxicity, conserved biosystemNatural killer (NK) cells are lymphocytes of the innate immune system that are involved in early defenses against both allogeneic (nonself) cells and autologous cells undergoing various forms of stre...
    • Paxillin-dependent events mediated by a4b1, organism-specific biosystem (from Pathway Interaction Database)
      Paxillin-dependent events mediated by a4b1, organism-specific biosystem
      Paxillin-dependent events mediated by a4b1
    • Regulation of actin cytoskeleton, organism-specific biosystem (from KEGG)
      Regulation of actin cytoskeleton, organism-specific biosystem
      Regulation of actin cytoskeleton
    • Regulation of actin cytoskeleton, conserved biosystem (from KEGG)
      Regulation of actin cytoskeleton, conserved biosystem
      Regulation of actin cytoskeleton
    • Rheumatoid arthritis, organism-specific biosystem (from KEGG)
      Rheumatoid arthritis, organism-specific biosystemRheumatoid arthritis (RA) is a chronic autoimmune joint disease where persistent inflammation affects bone remodeling leading to progressive bone destruction. In RA, abnormal activation of the immune...
    • Rheumatoid arthritis, conserved biosystem (from KEGG)
      Rheumatoid arthritis, conserved biosystemRheumatoid arthritis (RA) is a chronic autoimmune joint disease where persistent inflammation affects bone remodeling leading to progressive bone destruction. In RA, abnormal activation of the immune...
    • Signal Transduction, organism-specific biosystem (from REACTOME)
      Signal Transduction, organism-specific biosystemSignal transduction is a process in which extracellular signals elicit changes in cell state and activity. Transmembrane receptors sense changes in the cellular environment by binding ligands, such a...
    • Staphylococcus aureus infection, organism-specific biosystem (from KEGG)
      Staphylococcus aureus infection, organism-specific biosystemStaphylococcus aureus can cause multiple forms of infections ranging from superficial skin infections to food poisoning and life-threatening infections. The organism has several ways to divert the ef...
    • Staphylococcus aureus infection, conserved biosystem (from KEGG)
      Staphylococcus aureus infection, conserved biosystemStaphylococcus aureus can cause multiple forms of infections ranging from superficial skin infections to food poisoning and life-threatening infections. The organism has several ways to divert the ef...
    • Viral myocarditis, organism-specific biosystem (from KEGG)
      Viral myocarditis, organism-specific biosystemMyocarditis is a cardiac disease associated with inflammation and injury of the myocardium. It results from various etiologies, both noninfectious and infectious, but coxsackievirus B3 (CVB3) is stil...

    Gene Ontology Provided by GOA

    Function Evidence Code Pubs
    cell adhesion molecule binding IPI
    Inferred from Physical Interaction
    more info
    PubMed 
    protein heterodimerization activity IEA
    Inferred from Electronic Annotation
    more info
     
    receptor activity IEA
    Inferred from Electronic Annotation
    more info
     
    Process Evidence Code Pubs
    T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell IMP
    Inferred from Mutant Phenotype
    more info
    PubMed 
    activated T cell proliferation IEA
    Inferred from Electronic Annotation
    more info
     
    blood coagulation TAS
    Traceable Author Statement
    more info
     
    cell adhesion IEA
    Inferred from Electronic Annotation
    more info
     
    cell adhesion NAS
    Non-traceable Author Statement
    more info
    PubMed 
    cellular component movement TAS
    Traceable Author Statement
    more info
    PubMed 
    heterophilic cell-cell adhesion IMP
    Inferred from Mutant Phenotype
    more info
    PubMed 
    inflammatory response NAS
    Non-traceable Author Statement
    more info
    PubMed 
    integrin-mediated signaling pathway IEA
    Inferred from Electronic Annotation
    more info
     
    leukocyte cell-cell adhesion IMP
    Inferred from Mutant Phenotype
    more info
    PubMed 
    leukocyte migration TAS
    Traceable Author Statement
    more info
     
    positive regulation of T cell proliferation IEA
    Inferred from Electronic Annotation
    more info
     
    positive regulation of calcium-mediated signaling IEA
    Inferred from Electronic Annotation
    more info
     
    positive regulation of cell-cell adhesion IEA
    Inferred from Electronic Annotation
    more info
     
    regulation of immune response TAS
    Traceable Author Statement
    more info
     
    signal transduction NAS
    Non-traceable Author Statement
    more info
    PubMed 
    Component Evidence Code Pubs
    external side of plasma membrane IEA
    Inferred from Electronic Annotation
    more info
     
    immunological synapse IEA
    Inferred from Electronic Annotation
    more info
     
    integral to membrane IEA
    Inferred from Electronic Annotation
    more info
     
    integrin complex IEA
    Inferred from Electronic Annotation
    more info
     
    integrin complex NAS
    Non-traceable Author Statement
    more info
    PubMed 
    membrane IEA
    Inferred from Electronic Annotation
    more info
     
    plasma membrane TAS
    Traceable Author Statement
    more info
     

    General protein information

    Preferred Names
    integrin alpha-L
    Names
    integrin alpha-L
    LFA-1A
    LFA-1 alpha
    integrin gene promoter
    CD11 antigen-like family member A
    lymphocyte function-associated antigen 1
    leukocyte adhesion glycoprotein LFA-1 alpha chain
    leukocyte function-associated molecule 1 alpha chain
    antigen CD11A (p180), lymphocyte function-associated antigen 1, alpha polypeptide

    NCBI Reference Sequences (RefSeq)

    RefSeqs maintained independently of Annotated Genomes

    These reference sequences exist independently of genome builds. Explain

    These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

    mRNA and Protein(s)

    1. NM_001114380.1NP_001107852.1  integrin alpha-L isoform b precursor

      Status: REVIEWED

      Description
      Transcript Variant: This variant (2) lacks an alternate in-frame segment and uses an alternate in-frame splice junction compared to variant 1. The resulting isoform (b) has the same N- and C-termini but is shorter compared to isoform a.
      Source sequence(s)
      BC008777, CA430398, DC324373
      Consensus CDS
      CCDS45461.1
      UniProtKB/Swiss-Prot
      P20701
      Related
      ENSP00000350886, OTTHUMP00000255494, ENST00000358164, OTTHUMT00000434511
      Conserved Domains (4) summary
      pfam08441
      Location:529961
      Blast Score: 643
      Integrin_alpha2; Integrin alpha
      pfam13517
      Location:447518
      Blast Score: 97
      VCBS; Family description
      cl00057
      Location:106240
      Blast Score: 456
      vWFA; Von Willebrand factor type A (vWA) domain was originally found in the blood coagulation protein von Willebrand factor (vWF). Typically, the vWA domain is made up of approximately 200 amino acid residues folded into a classic a/b para-rossmann type of ...
      cl15299
      Location:434486
      Blast Score: 153
      FG-GAP; FG-GAP repeat
    2. NM_002209.2NP_002200.2  integrin alpha-L isoform a precursor

      Status: REVIEWED

      Description
      Transcript Variant: This variant (1) represents the longer transcript and encodes the longer isoform (a).
      Source sequence(s)
      AK314246, BC008777, CA430398, DC324373
      Consensus CDS
      CCDS32433.1
      UniProtKB/TrEMBL
      B2RAL6
      UniProtKB/Swiss-Prot
      P20701
      Related
      ENSP00000349252, OTTHUMP00000255492, ENST00000356798, OTTHUMT00000434508
      Conserved Domains (4) summary
      cd01469
      Location:155323
      Blast Score: 582
      vWA_integrins_alpha_subunit; Integrins are a class of adhesion receptors that link the extracellular matrix to the cytoskeleton and cooperate with growth factor receptors to promote celll survival, cell cycle progression and cell migration. Integrins consist of an alpha and a beta ...
      pfam08441
      Location:6121045
      Blast Score: 642
      Integrin_alpha2; Integrin alpha
      pfam13517
      Location:530601
      Blast Score: 97
      VCBS; Family description
      cl15299
      Location:517569
      Blast Score: 153
      FG-GAP; FG-GAP repeat

    RefSeqs of Annotated Genomes: Build 37.3

    The following sections contain reference sequences that belong to a specific genome build. Explain

    Reference GRCh37.p5 Primary Assembly

    Genomic

    1. NC_000016.9 Reference GRCh37.p5 Primary Assembly

      Range
      30483983..30534506
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    Alternate HuRef

    Genomic

    1. AC_000148.1 Alternate HuRef

      Range
      28046747..28097233
      Download
      GenBank, FASTA, Sequence Viewer (Graphics)

    Related Sequences

    Nucleotide Protein
    Heading Accession and Version
    genomic AC002310.1 AAC31672.1
    genomic AC116348.3 None
    genomic CH471192.1 EAW52243.1
      EAW52244.1
      EAW52245.1
    genomic DQ131904.1 AAZ38713.1
    genomic M95609.1 AAA16474.2
    genomic Z22804.1 CAA80461.1
    mRNA AK298674.1 BAG60839.1
    mRNA AK303190.1 BAG64283.1
    mRNA AK314246.1 BAG36913.1
    mRNA BC008777.2 AAH08777.1
    mRNA CA430398.1 None
    mRNA DC324373.1 None
    mRNA Y00796.1 CAA68747.1
    Protein Accession Links
    GenPept Link UniProtKB Link
    P20701.3 GenPept UniProtKB/Swiss-Prot:P20701

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