[求救] 幾提生化問題

看板Biotech作者 (Para Paradise)時間15年前 (2008/10/27 23:56), 編輯推噓3(303)
留言6則, 3人參與, 最新討論串1/1
1.(a) In gel filtration, larger proteins run faster or slower? Why? 我知道大的跑比較快 但不知道為什麼<囧 (b) In SDS-PAGE, larger proteins run faster or slower? Why? 我知道大的跑比較慢 但不知道為什麼<囧 2.(1) Can an antibody and its antigen be co-crystallized for X-ray determination to study the interaction between this antibody and its antigen? Why? (2) Can we apply the same idea to study the interaction between an enzyme and its allosteric effector or substrate individually via co-crystallization? Why? 3.(a) Why do we add PITC in the analyses of amino acid composition and sequencing? (b) Why do we add 6 M HCl in the analysis of amino acid composition but not in the analysis of amino acid sequencing? (c) The existence of disulfide bonds in a protein blocks the Edman reaction. How to solve this problem during amino acid sequencing? 請高手指點迷津 感激不盡:) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.58.155.102

10/27 23:59, , 1F
認真一點查查書...加油,好嗎?
10/27 23:59, 1F

10/28 02:10, , 2F
這...應該很課本吧...超生化的題目,原po加油!!
10/28 02:10, 2F

10/28 02:10, , 3F
離開課本太久了沒辦法給建議Orz
10/28 02:10, 3F

10/29 01:07, , 4F
回答第一提 膠體純化小分子會進去樹脂裡鑽一鑽再出來
10/29 01:07, 4F

10/29 01:08, , 5F
大分子直接通過樹脂顆粒之間 所以先出來
10/29 01:08, 5F

10/29 01:09, , 6F
SDS膠裡面很多小洞,小分子走的快 大分子比較擠 走得慢
10/29 01:09, 6F
※ 編輯: steffanie 來自: 61.58.155.102 (10/30 22:17)
文章代碼(AID): #191UIsIZ (Biotech)