Mouse anti-Human CD74 Monoclonal Antibody | anti-CD74 antibody

CD74

Cat. Num. AAA370040

• Gene Names: CD74; II; DHLAG; HLADG; Ia-GAMMA
• Reactivity: Human
• Synonyms: CD74; Monoclonal Antibody; anti-CD74 antibody

• Host: Mouse
• Reactivity: Human
• Clonality: Monoclonal
• Isotype: IgG1
• Clone Number: LN2
• Form/Format: CD74 is a mouse monoclonal antibody derived from cell culture supernatant that is concentrated, dialyzed, filter sterilized and diluted in buffer pH 7.5, containing BSA and sodium azide as a preservative.

• Control: Tonsil, Lymph Node
• Localization: Cytoplasmic, Membranous
• Reactivity Note: Paraffin, Frozen
• Preparation and Storage: Store at 2 to 8 degree C in the dark.

Dilution Information

Immunohistochemistry (IHC)

Related Product Information for anti-CD74 antibody

CD74, also known as the MHC Class II-associated invariant chain (II), is a Type II transmembrane protein which binds to the peptide-binding groove of newly-synthesized MHC class II alpha/beta heterodimers and prevents their premature association with endogenous polypeptides. CD74 is expressed primarily by antigen-presenting cells such as B-lymphocytes (from before the pre-B-cell stage to before the plasma-cell stage), macrophages and monocytes, together with many epithelial cells. CD74 stains predominantly germinal-center lymphocytes and B-cell lymphomas but rarely T-cell lymphomas. It stains the cell membrane but a paranuclear globular labeling is also noted. CD74 is useful in differentiating Atypical Fibroxanthoma from Malignant Fibrous Histiocytoma, as well as Small-cell Lung Carcinoma from Non-small cell Lung Carcinomas.

NCBI and Uniprot Product Information

• NCBI GI #: 119582135
• NCBI GeneID: 972
• UniProt Accession #: P04233; Q14597; Q29832; Q5U0J8; Q8SNA0; Q8WLP6; A8K7R1; B4DNE8; D3DQG3; D3DQG4; O19685; O78208
• Molecular Weight: 33,516 Da
• NCBI Official Full Name: CD74 antigen (invariant polypeptide of major histocompatibility complex, class II antigen-associated), isoform CRA_c
• NCBI Official Synonym Full Names: CD74 molecule, major histocompatibility complex, class II invariant chain
• NCBI Official Symbol: CD74
• NCBI Official Synonym Symbols: II; DHLAG; HLADG; Ia-GAMMA
• NCBI Protein Information: HLA class II histocompatibility antigen gamma chain; p33; HLA-DR-gamma; OTTHUMP00000224283; OTTHUMP00000224284; OTTHUMP00000224285; OTTHUMP00000224286; OTTHUMP00000224288; OTTHUMP00000224338; MHC HLA-DR gamma chain; Ia-associated invariant chain; gamma chain of class II antigens; HLA-DR antigens-associated invariant chain; CD74 antigen (invariant polypeptide of major histocompatibility complex, class II antigen-associated)
• UniProt Protein Name: HLA class II histocompatibility antigen gamma chain
• Protein Family: H-2 class II histocompatibility antigen
• UniProt Gene Name: CD74
• UniProt Synonym Gene Names: DHLAG
• UniProt Entry Name: HG2A_HUMAN

NCBI Description

The protein encoded by this gene associates with class II major histocompatibility complex (MHC) and is an important chaperone that regulates antigen presentation for immune response. It also serves as cell surface receptor for the cytokine macrophage migration inhibitory factor (MIF) which, when bound to the encoded protein, initiates survival pathways and cell proliferation. This protein also interacts with amyloid precursor protein (APP) and suppresses the production of amyloid beta (Abeta). Multiple alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Aug 2011]

Uniprot Description

Function: Plays a critical role in MHC class II antigen processing by stabilizing peptide-free class II alpha/beta heterodimers in a complex soon after their synthesis and directing transport of the complex from the endoplasmic reticulum to the endosomal/lysosomal system where the antigen processing and binding of antigenic peptides to MHC class II takes place. Serves as cell surface receptor for the cytokine MIF.

Subunit structure: Homotrimer. In the endoplasmic reticulum (ER) it forms an heterononameric MHC II-Ii complex: 3 MHC class II molecules (heterodimers of an alpha and a beta subunit) bind to the CD74 homotrimer (also known as invariant chain or HLA class II histocompatibility antigen gamma chain). In the endosomal/lysosomal system, the CD74 component undergoes sequential degradation by various proteases, including CTSS and CTSL, leaving a small fragment termed CLIP (class-II-associated invariant chain peptide) attached to the MHC class II molecule (alpha-beta-CLIP complex). This processed complex interacts with HLA_DM and HLA_DO heterodimers in order to release CLIP and facilitate the binding of antigenic peptides to the MHC class II molecules. Ref.12

Subcellular location: Cell membrane; Single-pass type II membrane protein

Potential. Endoplasmic reticulum membrane. Golgi apparatus › trans-Golgi network. Endosome. Lysosome. Note: Transits through a number of intracellular compartments in the endocytic pathway. It can either undergo proteolysis or reach the cell membrane.

Sequence similarities: Contains 1 thyroglobulin type-1 domain.

Sequence caution: The sequence AAA36304.1 differs from that shown. Reason: Erroneous initiation.