AP2S1 blocking peptide

AP2S1 Antibody (Center) Blocking Peptide

• Gene Names: AP2S1; AP17; FBH3; HHC3; FBHOk; CLAPS2
• Synonyms: AP2S1; AP2S1 Antibody (Center) Blocking Peptide; AP-2 complex subunit sigma; Adaptor protein complex AP-2 subunit sigma; Adaptor-related protein complex 2 subunit sigma; Clathrin assembly protein 2 sigma small chain; Clathrin coat assembly protein AP17; Clathrin coat-associated protein AP17; HA2 17 kDa subunit; Plasma membrane adaptor AP-2 17 kDa protein; Sigma2-adaptin; AP17; CLAPS2; AP2S1 blocking peptide

• 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: 142

• 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
• 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 AP2S1 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 and AP-2 sigma subunits are thought to contribute to the recognition of the [ED]-X-X-X-L-[LI] motif (By similarity). May also play a role in extracellular calcium homeostasis.

NCBI and Uniprot Product Information

• NCBI GI #: 51338780
• NCBI GeneID: 1175
• UniProt Accession #: P53680; O75977; Q6PK67; B2R4Z4
• Molecular Weight: 12,417 Da
• NCBI Official Full Name: AP-2 complex subunit sigma
• NCBI Official Synonym Full Names: adaptor related protein complex 2 sigma 1 subunit
• NCBI Official Symbol: AP2S1
• NCBI Official Synonym Symbols: AP17; FBH3; HHC3; FBHOk; CLAPS2
• NCBI Protein Information: AP-2 complex subunit sigma
• UniProt Protein Name: AP-2 complex subunit sigma
• Protein Family: AP-2 complex
• UniProt Gene Name: AP2S1
• UniProt Synonym Gene Names: AP17; CLAPS2
• UniProt Entry Name: AP2S1_HUMAN

NCBI Description

One of two major clathrin-associated adaptor complexes, AP-2, is a heterotetramer which is associated with the plasma membrane. This complex is composed of two large chains, a medium chain, and a small chain. This gene encodes the small chain of this complex. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

Uniprot Description

AP2S1: 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 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 small subunit family. 2 isoforms of the human protein are produced by alternative splicing.

Chromosomal Location of Human Ortholog: 19q13.32

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

Molecular Function: protein binding

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

Disease: Hypocalciuric Hypercalcemia, Familial, Type Iii