產(chǎn)品詳情
Na+-K+泵 ——實(shí)際上就是Na+-K+ATP酶,存在于動(dòng)植物細(xì)胞質(zhì)膜上,它有大小兩個(gè)亞基,大亞基催化ATP水解,小亞基是一個(gè)糖蛋白.Na+-K+ATP酶通過(guò)磷酸化和去磷酸化過(guò)程發(fā)生構(gòu)象的變化,導(dǎo)致與Na+,K+的親和力發(fā)生變化.大亞基以親Na+態(tài)結(jié)合Na+后,觸發(fā)水解ATP.每水解一個(gè)ATP釋放的能量輸送3個(gè)Na+到胞外,同時(shí)攝取2個(gè)K+入胞,造成跨膜梯度和電位差,這對(duì)神經(jīng)沖動(dòng)傳導(dǎo)尤其重要,Na+-K+泵造成的膜電位差約占整個(gè)神經(jīng)膜電壓的80%.若將純化的Na+-K+泵裝配在紅細(xì)胞膜囊泡(血影)上,人為地增大膜兩邊的Na+,K+梯度到一定程度,當(dāng)梯度所持有的能量大于ATP水解的化學(xué)能時(shí),Na+,K+會(huì)反向順濃差流過(guò)Na+-K+泵,同時(shí)合成ATP.
A2270-LR01B01KS-60
A2270-LR01C01BS-60
A2270-LR01C01HS-60
A2270-LR01C01KS-60
A2270-LR01B01BS-60
A2270-LR01C01BS-60
A2270-FR01B01CS-60
A2270-FR01B01HS-60
A2270-FR01B01KS-60
A2270-FR01C01BS-60
A2270-FR01C01HS-60
A2270-FR01C01KS-60
A2270-FR01B01BS-60
A2270-FR01C01BS-60
YUKEN油研雙聯(lián)柱塞泵A2270系列
YUKEN油研雙聯(lián)柱塞泵A1616系列型號(hào)
A1616-LR01B01CSK-32
A1616-LR01B01HSK-32
A1616-LR01C01HSK-32
A1616-LR01C01BSK-32
A1616-LR01H01CSK-32
A1616-LR01H01BSK-32
A1616-LR01B01BSK-32
A1616-LR01C01CSK-32
A1616-LR01H01HSK-32
A1616-FR01B01CSK-32
A1616-FR01B01HSK-32
A1616-FR01C01HSK-32
A1616-FR01C01BSK-32
A1616-FR01H01CSK-32
A1616-FR01H01BSK-32
A1616-FR01B01BSK-32
A1616-FR01C01CSK-32
A1616-FR01H01HSK-32
YUKEN油研雙聯(lián)柱塞泵型號(hào)
A1656-LR01B01CK-32
A1656-LR01B01HK-32
A1656-LR01C01HK-32
A1656-LR01C01BK-32
A1656-LR01H01CK-32
A1656-LR01H01BK-32
A1656-LR01B01BK-32
A1656-LR01C01CK-32
A1656-LR01H01HK-32
A1656-FR01B01CK-32
A1656-FR01B01HK-32
A1656-FR01C01HK-32
A1656-FR01C01BK-32
A1656-FR01H01CK-32
A1656-FR01H01BK-32
A1656-FR01B01BK-32
A1656-FR01C01CK-32
A1656-FR01H01HK-32