Rabbit anti-Human CD227/MUC1 Polyclonal Antibody | anti-CD227/MUC1 antibody

CD227/MUC1 Antibody

Cat. Num. AAA9614517

• Gene Names: MUC1; EMA; PEM; PUM; KL-6; MAM6; PEMT; CD227; H23AG; MUC-1; CA 15-3; MUC-1/X; MUC1/ZD; MUC-1/SEC
• Reactivity: Human
• Applications: Western Blot, Immunohistochemistry, Immunofluorescence, Immunocytochemistry, ELISA
• Purity: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin
• Synonyms: CD227/MUC1; Polyclonal Antibody; CD227/MUC1 Antibody; ADMCKD; ADMCKD1; Breast carcinoma associated antigen DF3; Breast carcinoma-associated antigen DF3; CA 15-3; CA15 3; CA15 3 antigen; CA15.3; Cancer antigen 15-3; Carcinoma associated mucin; Carcinoma-associated mucin; CD 227; CD227; DF3 antigen; EMA; Episialin; H23 antigen; H23AG; KL 6; KL-6; KL6; Krebs von den Lungen-6; MAM 6; MAM6; MCD; MCKD; MCKD1; Medullary cystic kidney disease 1 (autosomal dominant); Medullary cystic kidney disease; autosomal dominant; MUC 1; MUC-1; MUC-1/SEC; MUC-1/X; MUC1; MUC1-alpha; MUC1-beta; MUC1-CT; MUC1-NT; MUC1/ZD; MUC1_HUMAN; Mucin 1; Mucin 1 transmembrane; cell surface associated; Mucin-1 subunit beta; Peanut reactive urinary mucin; Peanut-reactive urinary mucin; PEM; PEMT; Polymorphic epithelial mucin; PUM; Tumor associated epithelial membrane antigen; Tumor associated epithelial mucin; Tumor associated mucin; Tumor-associated epithelial membrane antigen; Tumor-associated mucin; anti-CD227/MUC1 antibody

• Host: Rabbit
• Reactivity: Human
• Clonality: Polyclonal
• Isotype: Rabbit IgG
• Specificity: CD227/MUC1 Antibody detects endogenous levels of total CD227/MUC1.; Tissue Specificity: Expressed on the apical surface of epithelial cells, especially of airway passages, breast and uterus. Also expressed in activated and unactivated T-cells. Overexpressed in epithelial tumors, such as breast or ovarian cancer and also in non-epithelial tumor cells. Isoform Y is expressed in tumor cells only.
• Purity/Purification: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin
• Form/Format: Liquid. Rabbit IgG in phosphate buffered saline, pH7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1mg/ml (varies by lot)

• Applicable Applications for anti-CD227/MUC1 antibody: Western Blot (WB), Immunohistochemistry (IHC), Immunofluorescence (IF), Immunocytochemistry (ICC), Peptide ELISA (EIA)
• Application Notes: WB: 1:1000-3000; IHC: 1:200; IF/ICC: 1:200-1:500; Peptide ELISA: 1:20,000-1:40,000
• Immunogen: A synthesized peptide derived from human CD227/MUC1, corresponding to a region within C-terminal amino acids.
• Conjugation: Unconjugated
• Fragment: Fab fragment
• Post Translational Modifications: Highly glycosylated (N- and O-linked carbohydrates and sialic acid). O-glycosylated to a varying degree on serine and threonine residues within each tandem repeat, ranging from mono- to penta-glycosylation. The average density ranges from about 50% in human milk to over 90% in T47D breast cancer cells. Further sialylation occurs during recycling. Membrane-shed glycoproteins from kidney and breast cancer cells have preferentially sialyated core 1 structures, while secreted forms from the same tissues display mainly core 2 structures. The O-glycosylated content is overlapping in both these tissues with terminal fucose and galactose, 2- and 3-linked galactose, 3- and 3,6-linked GalNAc-ol and 4-linked GlcNAc predominating. Differentially O-glycosylated in breast carcinomas with 3,4-linked GlcNAc. N-glycosylation consists of high-mannose, acidic complex-type and hybrid glycans in the secreted form MUC1/SEC, and neutral complex-type in the transmembrane form, MUC1/TM.Proteolytic cleavage in the SEA domain occurs in the endoplasmic reticulum by an autoproteolytic mechanism and requires the full-length SEA domain as well as requiring a Ser, Thr or Cys residue at the P + 1 site. Cleavage at this site also occurs on isoform MUC1/X but not on isoform MUC1/Y. Ectodomain shedding is mediated by ADAM17.Dual palmitoylation on cysteine residues in the CQC motif is required for recycling from endosomes back to the plasma membrane.Phosphorylated on tyrosines and serine residues in the C-terminal. Phosphorylation on tyrosines in the C-terminal increases the nuclear location of MUC1 and beta-catenin. Phosphorylation by PKC delta induces binding of MUC1 to beta-catenin/CTNNB1 and thus decreases the formation of the beta-catenin/E-cadherin complex. Src-mediated phosphorylation inhibits interaction with GSK3B. Src- and EGFR-mediated phosphorylation on Tyr-1229 increases binding to beta-catenin/CTNNB1. GSK3B-mediated phosphorylation on Ser-1227 decreases this interaction but restores the formation of the beta-cadherin/E-cadherin complex. On T-cell receptor activation, phosphorylated by LCK. PDGFR-mediated phosphorylation increases nuclear colocalization of MUC1CT and CTNNB1.The N-terminal sequence has been shown to begin at position 24 or 28.
• Subunit Structure: The alpha subunit forms a tight, non-covalent heterodimeric complex with the proteolytically-released beta-subunit. Interaction, via the tandem repeat region, with domain 1 of ICAM1 is implicated in cell migration and metastases. Isoform 1 binds directly the SH2 domain of GRB2, and forms a MUC1/GRB2/SOS1 complex involved in RAS signaling. The cytoplasmic tail (MUC1CT) interacts with several proteins such as SRC, CTNNB1 and ERBs. Interaction with the SH2 domain of CSK decreases interaction with GSK3B. Interacts with CTNNB1/beta-catenin and JUP/gamma-catenin and promotes cell adhesion. Interaction with JUP/gamma-catenin is induced by heregulin. Binds PRKCD, ERBB2, ERBB3 and ERBB4. Heregulin (HRG) stimulates the interaction with ERBB2 and, to a much lesser extent, the interaction with ERBB3 and ERBB4. Interacts with P53 in response to DNA damage. Interacts with KLF4. Interacts with estrogen receptor alpha/ESR1, through its DNA-binding domain, and stimulates its transcription activity. Binds ADAM17. Isoform ZD forms disulfide-linked oligomers.
• Subcellular Location: Apical cell membrane>Single-pass type I membrane protein.; Note: Exclusively located in the apical domain of the plasma membrane of highly polarized epithelial cells. After endocytosis, internalized and recycled to the cell membrane. Located to microvilli and to the tips of long filopodial protusions. Secreted. Secreted. Secreted. Cell membrane. Cytoplasm. Nucleus.; Note: On EGF and PDGFRB stimulation, transported to the nucleus through interaction with CTNNB1, a process which is stimulated by phosphorylation. On HRG stimulation, colocalizes with JUP/gamma-catenin at the nucleus.
• Preparation and Storage: Store at -20 degree C. Stable for 12 months from date of receipt.

Western Blot (WB)

(Western blot analysis of MUC1 using PMA treated 293 whole cell lysates. The lane on the left was treated with blocking peptide.)

Immunohistochemistry (IHC)

(Staining Human breast cancer tissue by IHC-P. The sample was formaldehyde fixed and a heat mediated antigen retrieval step in citrate buffer was performed. The sample was then blocked and incubated with the antibody for 1.5 hours at 22 degree C. An HRP conjugated goat anti-rabbit antibody was used as the secondary antibody.)

Testing Data

(At 25 degree C. The primary antibody was diluted at 1/200 and incubated with the sample for 1 hour at 37 degree C. An Alexa Fluor 594 conjugated goat anti-rabbit IgG (H+L) Ab, diluted at 1/600, was used as the secondary antibody.)

Related Product Information for anti-CD227/MUC1 antibody

The alpha subunit has cell adhesive properties. Can act both as an adhesion and an anti-adhesion protein. May provide a protective layer on epithelial cells against bacterial and enzyme attack.The beta subunit contains a C-terminal domain which is involved in cell signaling, through phosphorylations and protein-protein interactions. Modulates signaling in ERK, SRC and NF-kappa-B pathways. In activated T-cells, influences directly or indirectly the Ras/MAPK pathway. Promotes tumor progression. Regulates TP53-mediated transcription and determines cell fate in the genotoxic stress response. Binds, together with KLF4, the PE21 promoter element of TP53 and represses TP53 activity.

NCBI and Uniprot Product Information

• NCBI GI #: 67189007
• NCBI GeneID: 4582
• NCBI Accession #: NP_001018016.1
• NCBI GenBank Nucleotide #: NM_001018016.2
• UniProt Accession #: P15941; P13931; P15942; P17626; Q0VAP6; Q14128; Q14876; Q16437; Q16442; Q16615; B1AVQ8; B1AVR0
• Molecular Weight: 122,102 Da
• NCBI Official Full Name: mucin-1 isoform 2
• NCBI Official Synonym Full Names: mucin 1, cell surface associated
• NCBI Official Symbol: MUC1
• NCBI Official Synonym Symbols: EMA; PEM; PUM; KL-6; MAM6; PEMT; CD227; H23AG; MUC-1; CA 15-3; MUC-1/X; MUC1/ZD; MUC-1/SEC
• NCBI Protein Information: mucin-1; episialin; DF3 antigen; H23 antigen; cancer antigen 15-3; krebs von den Lungen-6; mucin 1, transmembrane; tumor-associated mucin; carcinoma-associated mucin; polymorphic epithelial mucin; peanut-reactive urinary mucin; tumor associated epithelial
• UniProt Protein Name: Mucin-1
• UniProt Gene Name: MUC1
• UniProt Synonym Gene Names: PUM; MUC-1; CA 15-3; KL-6; PUM; PEM; EMA; MUC1-NT; MUC1-alpha; MUC1-beta
• UniProt Entry Name: MUC1_HUMAN

NCBI Description

This gene encodes a membrane-bound protein that is a member of the mucin family. Mucins are O-glycosylated proteins that play an essential role in forming protective mucous barriers on epithelial surfaces. These proteins also play a role in intracellular signaling. This protein is expressed on the apical surface of epithelial cells that line the mucosal surfaces of many different tissues including lung, breast stomach and pancreas. This protein is proteolytically cleaved into alpha and beta subunits that form a heterodimeric complex. The N-terminal alpha subunit functions in cell-adhesion and the C-terminal beta subunit is involved in cell signaling. Overexpression, aberrant intracellular localization, and changes in glycosylation of this protein have been associated with carcinomas. This gene is known to contain a highly polymorphic variable number tandem repeats (VNTR) domain. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Feb 2011]

Uniprot Description

MUC1: a large cell surface glycoprotein expressed by most glandular and ductal epithelial cells and some hematopoietic cell lineages. Plays a role in adhesion and cell-cell interactions, metastasis and signaling. May provide a protective layer on epithelial surfaces. Direct or indirect interaction with actin cytoskeleton. Its cytoplasmic tail (MUC1CT) is involved in several signaling pathways, including those involving Ras, beta-catenin, p120 catenin, p53 and estrogen receptor alpha. MUC1CT also forms complexes with transcription factors, and then translocates to the nucleus by an unknown mechanism, where it is believed to influence the transcription of their target genes. MUC1CT has also been proposed to localize to mitochondrial membranes under conditions of genotoxic stress, where it attenuates the apoptotic pathway in response and confers resistance to apoptosis-inducing drugs. Aberrantly glycosylated forms expressed in human epithelial tumors, such as breast or ovarian cancer and also in non-epithelial tumor cells. Nine alternatively spliced isoforms have been described. Isoforms 5 and 9 are secreted. Isoform 7, expressed only in tumor cells, is a receptor and binds the secreted isoform 5. The binding induces the phosphorylation of the isoform 7, alters cellular morphology and initiates cell signaling. Can bind to GRB2 adapter protein.

Protein type: Motility/polarity/chemotaxis; Membrane protein, integral; Nuclear receptor co-regulator; Tumor suppressor; Cell adhesion; Actin-binding

Chromosomal Location of Human Ortholog: 1q21

Cellular Component: extracellular space; cell surface; integral to plasma membrane; Golgi lumen; apical plasma membrane; nuclear chromatin; cytoplasm; vesicle

Molecular Function: protein binding; p53 binding; transcription cofactor activity

Biological Process: protein amino acid O-linked glycosylation; DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator; regulation of transcription from RNA polymerase II promoter in response to stress; cellular protein metabolic process; O-glycan processing; post-translational protein modification; DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest

Disease: Medullary Cystic Kidney Disease 1