Anti-CD22 (phospho Y822)抗体[Y506] (ab32123)


  • 产品名称
    Anti-CD22 (phospho Y822)抗体[Y506]
    参阅全部 CD22 一抗
  • 描述
    兔单克隆抗体[Y506] to CD22 (phospho Y822)
  • 宿主
  • 特异性
    ab32123 recognises CD22 phosphorylation on Tyrosine 822. This antibody is predicted to detect splice isoform 2 based on sequence homology.
  • 经测试应用
    适用于: WB, Flow Cytmore details
    不适用于: IHC or IP
  • 种属反应性
    与反应: Human
  • 免疫原

    A synthetic phospho-peptide corresponding to residues surrounding Tyrosine 822 of human CD22

  • 阳性对照
    • WB: Ramos and Raji cell lysates treated with Pervanadate. Flow Cyt: K562 cells treated with Pervanadate.
  • 常规说明


    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents



Our Abpromise guarantee covers the use of ab32123 in the following tested applications.

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

应用 Ab评论 说明
WB 1/1000. Detects a band of approximately 150 kDa (predicted molecular weight: 95 kDa).
Flow Cyt 1/10.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

  • 应用说明
    Is unsuitable for IHC or IP.
  • 靶标

    • 功能
      Mediates B-cell B-cell interactions. May be involved in the localization of B-cells in lymphoid tissues. Binds sialylated glycoproteins; one of which is CD45. Preferentially binds to alpha-2,6-linked sialic acid. The sialic acid recognition site can be masked by cis interactions with sialic acids on the same cell surface. Upon ligand induced tyrosine phosphorylation in the immune response seems to be involved in regulation of B-cell antigen receptor signaling. Plays a role in positive regulation through interaction with Src family tyrosine kinases and may also act as an inhibitory receptor by recruiting cytoplasmic phosphatases via their SH2 domains that block signal transduction through dephosphorylation of signaling molecules.
    • 组织特异性
    • 序列相似性
      Belongs to the immunoglobulin superfamily. SIGLEC (sialic acid binding Ig-like lectin) family.
      Contains 6 Ig-like C2-type (immunoglobulin-like) domains.
      Contains 1 Ig-like V-type (immunoglobulin-like) domain.
    • 结构域
      Contains 4 copies of a cytoplasmic motif that is referred to as the immunoreceptor tyrosine-based inhibitor motif (ITIM). This motif is involved in modulation of cellular responses. The phosphorylated ITIM motif can bind the SH2 domain of several SH2-containing phosphatases.
    • 翻译后修饰
      Phosphorylation of Tyr-762, Tyr-807 and Tyr-822 are involved in binding to SYK, GRB2 and SYK, respectively. Phosphorylation of Tyr-842 is involved in binding to SYK, PLCG2 and PIK3R1/PIK3R2.
      Phosphorylated on tyrosine residues by LYN.
    • 细胞定位
      Cell membrane.
    • Information by UniProt
    • 数据库链接
    • 别名
      • B cell receptor CD22 precursor antibody
      • B lymphocyte cell adhesion molecule antibody
      • B-cell receptor CD22 antibody
      • B-lymphocyte cell adhesion molecule antibody
      • BL CAM antibody
      • BL-CAM antibody
      • BLCAM antibody
      • CD 22 antibody
      • CD22 antibody
      • CD22 antigen antibody
      • CD22 molecule antibody
      • CD22 protein antibody
      • CD22_HUMAN antibody
      • Lectin 2 antibody
      • Leu14 antibody
      • Lyb8 antibody
      • MGC130020 antibody
      • sialic acid binding Ig like lectin 2 antibody
      • Sialic acid binding immunoglobulin like lectin 2 antibody
      • Sialic acid-binding Ig-like lectin 2 antibody
      • SIGLEC 2 antibody
      • Siglec-2 antibody
      • SIGLEC2 antibody
      • T cell surface antigen Leu 14 antibody
      • T-cell surface antigen Leu-14 antibody
      see all


    • All lanes : Anti-CD22 (phospho Y822) antibody [Y506] (ab32123) at 1/1000 dilution

      Lane 1 : Ramos (human Burkitt's lymphoma B lymphocyte) whole cell lysate
      Lane 2 : Ramos treated with 1mM pervanadate for 30 min whole cell lysate
      Lane 3 : Ramos treated with 1mM pervanadate for 30 min whole cell lysate. Then the membrane was incubated with alkaline phosphatase.

      Lysates/proteins at 10 µg per lane.

      All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/20000 dilution

      Predicted band size: 95 kDa
      Observed band size: 150 kDa (why is the actual band size different from the predicted?)

      Blocking and dilution buffer: 5% NFDM/TBST.

    • Dot blot analysis of CD22 (phospho Y822) phospho peptide (Lane 1) and CD22 non-phospho peptide (Lane 2) labelling CD22 (phospho Y822) with ab32123 at a dilution of 1/1000. A Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated (ab97051) was used as the secondary antibody at a dilution of 1/20,000. Blocking buffer: 5% NFDM/TBST. Dilution buffer: 5% NFDM /TBST.

    • Flow cytometric analysis of permeabilized K562 cells, untreated (green) or Pervanadate treated (red) using ab32123
    • All lanes : Anti-CD22 (phospho Y822) antibody [Y506] (ab32123) at 1/1000 dilution

      Lane 1 : Untreated Raji cell lysate
      Lane 2 : Raji cell lysate treated with Pervanadate

      Predicted band size: 95 kDa
      Observed band size: 150 kDa (why is the actual band size different from the predicted?)


    This product has been referenced in:
    • Coughlin S  et al. An extracatalytic function of CD45 in B cells is mediated by CD22. Proc Natl Acad Sci U S A 112:E6515-24 (2015). Read more (PubMed: 26561584) »
    • Séïté JF  et al. IVIg modulates BCR signaling through CD22 and promotes apoptosis in mature human B lymphocytes. Blood 116:1698-704 (2010). Flow Cyt ; Human . Read more (PubMed: 20516366) »

    See all 2 Publications for this product


    Abcam has not validated the combination of species/application used in this Abreview.
    Flow Cytometry
    Mouse Cell (Splenic B cells)
    Yes - BD Perm buffer III
    Gating Strategy
    Single cells, B220+ B cells
    Splenic B cells
    Cell harvesting/tissue preparation method: Splenocyte isolation from fresh spleens followed by RBC lysis
    Sample buffer: Pervanadate stimulation

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    提交于 Dec 02 2015