- 中文名稱
GAL | β半乳糖苷酶
- 英文名字
- GAL | Beta galactosidase
- 供應商
- Agrisera
- 產品貨號
- AS20-4515
- 產品報價
- ￥詢價/200ug
- 產品說明書
- 點擊查看
- 購買方式
- 銀行轉賬、電匯、支票、現金，在線支付寶及網銀支付，或直接與我們電話聯系400-6800-868。
- 產品新聞
- 背景資料
- Beta-galactosidase is an exoglycosidase which hydrolyzes the β-glycosidic bond formed between agalactose and its organic moiety. It may also cleave fucosides and arabinosides but with much lower efficiency. It is an essential enzyme in the human body. Deficiencies in the protein can result ingalactosialidosis or Morquio B syndrome. In E. coli , the gene of β-galactosidase, the lacZ gene, is present as part of the inducible system lac operon which is activated in the presence of lactose when glucose level is low. It is commonly used in molecular biology as a reporter marker to monitor gene expression. It also exhibits a phenomenon called α-complementation which forms the basis for the blue/white screening of recombinant clones. This enzyme can be split in two peptides, LacZα and LacZΩ, neither of which is active by itself but when both are present together, spontaneously reassemble into a functional enzyme. This property is exploited in many cloning vectors where the presence of the lacZα gene in a plasmid can complement in trans another mutant gene encoding the LacZΩ in specific laboratory strains of E. coli . However, when DNA fragments are inserted in the vector, the production of LacZα is disrupted, the cells therefore show no β-galactosidase activity. The presence or absence of an active β-galactosidase may be detected by X-gal, which produces a characteristic blue dye when cleaved by β-galactosidase, thereby providing an easy means of distinguishing the presence or absence of cloned product in a plasmid. E. coli β-Galactosidase consists of 1,024 amino acids with molecular mass of 116 kDa and functional form is a homotetramer.
- 應用類型
- ELISA (ELISA), Immunofluorescence (IF), Immunoprecipitation (IP), Western blot (WB)
- 免疫原
- Full length Beta galactosidase from E.coli UniProt: B7UJI9
- 來源宿主
- 兔
- 反應性
- Beta galactosidase (E.coli) and beta galactosidase tagged proteins
- 保存建議
- Store at -20
- 其他
- Agrisera公司提供1000種用于植物和藻類細胞生物學研究的一抗，2000多種二抗。Agrisera公司提供的植物領域的抗體涵蓋擬南芥、萊茵衣藻、藍藻、松柏類、硅藻、大豆、大麥、蒺藜苜蓿、煙草、稻、菜豆、小立碗蘚、楊樹、豌豆、番茄、馬鈴薯、菠菜、小麥、玉米、葡萄等多個物種，此外還有水生生物類（藻類、魚）抗體，細菌、昆蟲、真菌抗體。針對植物蛋白質的保守氨基酸序列，Agirsera還獨家開發了數十種通用抗體（global antibodies），這類抗體幾乎可以與所有的高等植物及藻類產生免疫反應，可為研究人員提供極為方便的選擇。
- 注意
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該頁面的中文產品信息的翻譯，僅供參考。準確的產品信息請以廠家的英文說明書為準。下單前，請瀏覽說明書確認。
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