AP2A1 blocking peptide

AP2A1 Antibody (C-term) Blocking peptide

• Gene Names: AP2A1; ADTAA; CLAPA1; AP2-ALPHA
• Synonyms: AP2A1; AP2A1 Antibody (C-term) Blocking peptide; AP-2 complex subunit alpha-1; 100 kDa coated vesicle protein A; Adaptor protein complex AP-2 subunit alpha-1; Adaptor-related protein complex 2 subunit alpha-1; Alpha-adaptin A; Alpha1-adaptin; Clathrin assembly protein complex 2 alpha-A large chain; Plasma membrane adaptor HA2/AP2 adaptin alpha A subunit; ADTAA; CLAPA1; AP2A1 blocking peptide

• Specificity: The synthetic peptide sequence used to generate the antibody was selected from the C-term region of AP2A1. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay.
• Form/Format: Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
• Sequence Length: 977

• Cellular Location: Cell membrane. Membrane, coated pit; Peripheral membrane protein; Cytoplasmic side. Note: AP-2 appears to be excluded from internalizing CCVs and to disengage from sites of endocytosis seconds before internalization of the nascent CCV
• Tissue Location: Isoform A expressed in forebrain, skeletal muscle, spinal cord, cerebellum, salivary gland, heart and colon Isoform B is widely expressed in tissues and also in breast cancer and in prostate carcinoma cells
• Preparation and Storage: Maintain refrigerated at 2-8 degree C for up to 6 months. For long term storage store at -20 degree C.

Related Product Information for AP2A1 blocking peptide

Component of the adaptor protein complex 2 (AP-2). Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor protein complexes are vesicle coat components and appear to be involved in cargo selection and vesicle formation. AP-2 is involved in clathrin-dependent endocytosis in which cargo proteins are incorporated into vesicles surrounded by clathrin (clathrin- coated vesicles, CCVs) which are destined for fusion with the early endosome. The clathrin lattice serves as a mechanical scaffold but is itself unable to bind directly to membrane components. Clathrin-associated adaptor protein (AP) complexes which can bind directly to both the clathrin lattice and to the lipid and protein components of membranes are considered to be the major clathrin adaptors contributing the CCV formation. AP-2 also serves as a cargo receptor to selectively sort the membrane proteins involved in receptor-mediated endocytosis. AP-2 seems to play a role in the recycling of synaptic vesicle membranes from the presynaptic surface. AP-2 recognizes Y-X-X-[FILMV] (Y-X-X-Phi) and [ED]-X-X-X-L-[LI] endocytosis signal motifs within the cytosolic tails of transmembrane cargo molecules. AP-2 may also play a role in maintaining normal post-endocytic trafficking through the ARF6-regulated, non-clathrin pathway. The AP-2 alpha subunit binds polyphosphoinositide-containing lipids, positioning AP-2 on the membrane. The AP-2 alpha subunit acts via its C- terminal appendage domain as a scaffolding platform for endocytic accessory proteins. The AP-2 alpha and AP-2 sigma subunits are thought to contribute to the recognition of the [ED]-X-X-X-L-[LI] motif (By similarity).

NCBI and Uniprot Product Information

• NCBI GI #: 262527580
• NCBI GeneID: 160
• UniProt Accession #: O95782; Q96CI7; Q96PP6; Q96PP7; Q9H070
• Molecular Weight: 105,361 Da
• NCBI Official Full Name: AP-2 complex subunit alpha-1
• NCBI Official Synonym Full Names: adaptor related protein complex 2 alpha 1 subunit
• NCBI Official Symbol: AP2A1
• NCBI Official Synonym Symbols: ADTAA; CLAPA1; AP2-ALPHA
• NCBI Protein Information: AP-2 complex subunit alpha-1
• UniProt Protein Name: AP-2 complex subunit alpha-1
• Protein Family: AP-2 complex
• UniProt Gene Name: AP2A1
• UniProt Synonym Gene Names: ADTAA; CLAPA1
• UniProt Entry Name: AP2A1_HUMAN

NCBI Description

This gene encodes the alpha 1 adaptin subunit of the adaptor protein 2 (AP-2) complex found in clathrin coated vesicles. The AP-2 complex is a heterotetramer consisting of two large adaptins (alpha or beta), a medium adaptin (mu), and a small adaptin (sigma). The complex is part of the protein coat on the cytoplasmic face of coated vesicles which links clathrin to receptors in vesicles. Alternative splicing of this gene results in two transcript variants encoding two different isoforms. A third transcript variant has been described, but its full length nature has not been determined. [provided by RefSeq, Jul 2008]

Uniprot Description

AP2A1: Component of the adaptor protein complex 2 (AP-2). Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor protein complexes are vesicle coat components and appear to be involved in cargo selection and vesicle formation. AP-2 is involved in clathrin-dependent endocytosis in which cargo proteins are incorporated into vesicles surrounded by clathrin (clathrin- coated vesicles, CCVs) which are destined for fusion with the early endosome. The clathrin lattice serves as a mechanical scaffold but is itself unable to bind directly to membrane components. Clathrin-associated adaptor protein (AP) complexes which can bind directly to both the clathrin lattice and to the lipid and protein components of membranes are considered to be the major clathrin adaptors contributing the CCV formation. AP-2 also serves as a cargo receptor to selectively sort the membrane proteins involved in receptor-mediated endocytosis. AP-2 seems to play a role in the recycling of synaptic vesicle membranes from the presynaptic surface. AP-2 recognizes Y-X-X-[FILMV] (Y-X-X-Phi) and [ED]-X-X-X-L-[LI] endocytosis signal motifs within the cytosolic tails of transmembrane cargo molecules. AP-2 may also play a role in maintaining normal post-endocytic trafficking through the ARF6-regulated, non-clathrin pathway. The AP-2 alpha subunit binds polyphosphoinositide-containing lipids, positioning AP-2 on the membrane. The AP-2 alpha subunit acts via its C- terminal appendage domain as a scaffolding platform for endocytic accessory proteins. The AP-2 alpha and AP-2 sigma subunits are thought to contribute to the recognition of the [ED]-X-X-X-L-[LI] motif. Belongs to the adaptor complexes large subunit family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Vesicle; Adaptor/scaffold

Chromosomal Location of Human Ortholog: 19q13.33

Cellular Component: AP-2 adaptor complex; cytosol; membrane; plasma membrane

Molecular Function: protein binding; protein kinase binding

Biological Process: antigen processing and presentation of exogenous peptide antigen via MHC class II; ephrin receptor signaling pathway; microtubule-based movement; negative regulation of epidermal growth factor receptor signaling pathway; regulation of defense response to virus by virus; Wnt receptor signaling pathway, planar cell polarity pathway