SRP0221

PTPIA2 Active human

recombinant, expressed in E. coli, ≥90% (SDS-PAGE)

• 別名: ICA512, Islet cell antigen 2, PTPRN, Protein tyrosine phosphatase-like N, R-PTP-N
• UNSPSCコード: 12352200
• NACRES: NA.32

特性

• 由来生物: human
• リコンビナント: expressed in E. coli
• アッセイ: ≥90% (SDS-PAGE)
• 形状: aqueous solution
• 分子量: 58.8 kDa
• 包装: pkg of 20 μg
• 保管条件: avoid repeated freeze/thaw cycles
• 濃度: >0.02 mg/mL
• NCBIアクセッション番号: NM_002846
• UniProtアクセッション番号: Q16849
• 輸送温度: dry ice
• 保管温度: −70°C
• 遺伝子情報: human ... PTPRN(5798)

詳細

詳細

PTPRN (protein tyrosine phosphatase, receptor type N), more commonly known as IA-2 (insulinoma-associated protein 2), is a transmembrane protein of the PTP family. It was initially identified as a major autoantigen in type-1 diabetes mellitus. In neuroendocrine cells, it resides in the secretory granules. It is a multi-domain protein with intracellular, transmembrane and extracellular domains, and its intracellular region contains a pseudocatalytic domain. It gets processed multiple times during its life cycle, and its different parts are exposed to different cellular and tissue regions such as nucleus, cytosol, organellar lumen in the secretory pathway, extracellular pancreatic islet space, and membrane compartments. This gene is localized to human chromosome 2q35, and codes for a protein of 979 residues.

Protein tyrosine phosphatase. (PTP-IA2, ICA-512), Catalytic domain, (amino acids 693- 979), (Gene bank accession no. NM_002846), with N-terminal GST tag, MW = 58.8 kDa, expressed in an E. coli expression system.

アプリケーション

Useful for the study of enzyme kinetics, regulation, and to dephosphorylate target substrates.

生物化学的／生理学的作用

PTPRN (protein tyrosine phosphatase, receptor type N) is cleaved at the cytosolic domain during insulin secretion. The cytosolic domain is relocated to nucleus where it promotes insulin gene transcription. This protein plays important role in hormone and neuropeptide secretion. This protein is crucial in controlling the dense core vesicle number in β cells and glucose-induced and basal insulin release. PTPRN null mice show reduced dense core vesicle (DCV) number, abnormal insulin secretion, female infertility, behavioral alteration, and circadian dysregulation.

単位の定義

1ユニットは、pH 6.3、30°Cで1分あたり1 pmolの6, 8-ジフルオロ-4-メチルウンベリフェリルリン酸(DiFMUP)を加水分解する量と定義されています。

物理的形状

Formulated in 25 mM Tris-HCl, pH 8.0, 75 mM NaCl, 0.05% Tween-20, 50% glycerol, 2 mM EDTA, 1 mM DTT, and 10 mM glutathione.

調製ノート

氷上で解凍してください。最初に解凍した際、チューブを軽く遠心して内容物を完全に回収してください。酵素液は一回の使用量ずつ分注してください。分注した酵素液は希釈せずそのまま-70°Cで保存してください。注:酵素は凍結融解の繰り返しに対して非常に不安定です。