Overview

  • Product nameAnti-CD18 antibody [MEM-48]
    See all CD18 primary antibodies
  • Description
    Mouse monoclonal [MEM-48] to CD18
  • SpecificityHuman CD18 antigen. This antibody recognizes all three leucocyte integrins.
  • Tested applicationsSuitable for: ICC/IF, IHC-P, Flow Cyt, IHC-Fr, IP, WB, Functional Studiesmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Tissue/ cell preparation (Human). (Leucocytes of a patient suffering from a LGL-type leukaemia).

Properties

Applications

Our Abpromise guarantee covers the use of ab657 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF Use at an assay dependent concentration. PubMed: 24991932
IHC-P Use at an assay dependent concentration.
Flow Cyt Use 0.1-1µg for 106 cells. ab170190-Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.
IHC-Fr Use a concentration of 10 µg/ml.
IP Use at an assay dependent concentration.
WB Use a concentration of 2 µg/ml. Use under non reducing condition.

BSA is recommended for blocking.

Functional Studies Use at an assay dependent concentration. The antibody induces high-affinity conformation of LFA-1 complex.

Target

  • FunctionIntegrin alpha-L/beta-2 is a receptor for ICAM1, ICAM2, ICAM3 and ICAM4. Integrins alpha-M/beta-2 and alpha-X/beta-2 are receptors for the iC3b fragment of the third complement component and for fibrinogen. Integrin alpha-X/beta-2 recognizes the sequence G-P-R in fibrinogen alpha-chain. Integrin alpha-M/beta-2 recognizes P1 and P2 peptides of fibrinogen gamma chain. Integrin alpha-M/beta-2 is also a receptor for factor X. Integrin alpha-D/beta-2 is a receptor for ICAM3 and VCAM1.
  • Involvement in diseaseDefects in ITGB2 are the cause of leukocyte adhesion deficiency type 1 (LAD1) [MIM:116920]. LAD1 patients have recurrent bacterial infections and their leukocytes are deficient in a wide range of adhesion-dependent functions.
  • Sequence similaritiesBelongs to the integrin beta chain family.
    Contains 1 VWFA domain.
  • Post-translational
    modifications
    Both Ser-745 and Ser-756 become phosphorylated when T-cells are exposed to phorbol esters. Phosphorylation on Thr-758 (but not on Ser-756) allows interaction with 14-3-3 proteins.
  • Cellular localizationMembrane.
  • Information by UniProt
  • Database links
  • Alternative names
    • 95 subunit beta antibody
    • Beta 2 (antigen CD18 (p95) antibody
    • CD 18 antibody
    • CD18 antibody
    • Cell surface adhesion glycoprotein LFA 1/CR3/P150,959 beta subunit precursor) antibody
    • Cell surface adhesion glycoproteins LFA 1/CR3/p150,95 subunit beta antibody
    • Cell surface adhesion glycoproteins LFA-1/CR3/p150 antibody
    • Complement component 3 receptor 3 and 4 subunit antibody
    • Complement receptor C3 beta subunit antibody
    • Complement receptor C3 subunit beta antibody
    • Integrin beta 2 antibody
    • Integrin beta chain beta 2 antibody
    • Integrin beta-2 (ITGB2) antibody
    • Integrin beta-2 antibody
    • Integrin, beta 2 (complement component 3 receptor 3 and 4 subunit) antibody
    • ITB2_HUMAN antibody
    • ITGB2 antibody
    • LAD antibody
    • LCAMB antibody
    • Leukocyte associated antigens CD18/11A, CD18/11B, CD18/11C antibody
    • Leukocyte cell adhesion molecule CD18 antibody
    • LFA 1 antibody
    • LFA1 antibody
    • Lymphocyte function associated antigen 1 (LFA1) antibody
    • Lymphocyte function associated antigen 1 antibody
    • MAC 1 antibody
    • MAC1 antibody
    • Macrophage antigen 1 (mac1) beta antibody
    • MF17 antibody
    • MFI7 antibody
    • OTTHUMP00000115278 antibody
    • OTTHUMP00000115279 antibody
    • OTTHUMP00000115280 antibody
    • OTTHUMP00000115281 antibody
    • OTTHUMP00000115282 antibody
    see all

Anti-CD18 antibody [MEM-48] images

  • Human peripheral blood lymphocytes stained with ab657 (red line). Human whole blood was processed using a modified protocol based on Chow et al, 2005 (PMID: 16080188). In brief, human whole blood was fixed in 4% formaldehyde (methanol-free) for 10 min at 22ºC. Red blood cells were then lyzed by the addition of Triton X-100 (final concentration - 0.1%) for 15 min at 37ºC. For experimentation, cells were treated with 50% methanol (-20°C) for 15 min at 4ºC. Cells were then incubated with the antibody (ab657, 1μg/1x106 cells) for 30 min at 4ºC. The secondary antibody used was Alexa Fluor® 488 goat anti-mouse IgG (H&L) (ab150113) at 1/2000 dilution for 30 min at 4ºC. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353, 1μg/1x106 cells) used under the same conditions. Unlabelled sample (blue line) was also used as a control. Acquisition of >30,000 total events were collected using a 20mW Argon ion laser (488nm) and 525/30 bandpass filter. Gating strategy - peripheral blood lymphocytes.

References for Anti-CD18 antibody [MEM-48] (ab657)

This product has been referenced in:
  • Xiang Y  et al. Analysis on the relevance of asthma susceptibility with the alteration of integrin ß 4 expression. PLoS One 9:e95533 (2014). WB ; Human . Read more (PubMed: 24740264) »
  • Giese S & Marsh M Tetherin can restrict cell-free and cell-cell transmission of HIV from primary macrophages to T cells. PLoS Pathog 10:e1004189 (2014). ICC/IF . Read more (PubMed: 24991932) »

See all 5 Publications for this product

Product Wall

Abcam guarantees this product to work in the species/application used in this Abreview.
Application Flow Cytometry
Sample Human Cell lysate - whole cell (HEK293 cells overexpressing cd18/cd11b)
Specification HEK293 cells overexpressing cd18/cd11b
Permeabilization No
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Verified customer

Submitted Aug 18 2005

Thank you for your enquiry. These two antibodies were characterized using HPB-ALL or Jurkat T cells. Triplet of zones on NON-REDUCING lysates is usually observed (78-96 kDa). If you have any additional questins, please contact us again.

Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"