Top Banner
1 COO - R group 胺胺 胺胺 L-Form Amino Acid H = Glycine CH 3 = Alanine H N 3 + H Juang RH (2005) BCbasics sp 3
11

COO

Jan 04, 2016

Download

Documents

L -Form Amino Acid. -. COO. sp 3. +. a. H N. 3. H. 酸基. 胺基. H = Glycine. R group. CH 3 = Alanine. Juang RH (2005) BCbasics. 新的 Ile16 N- 端可穩定 Asp194. I16. D194. S195. Adapted from Dressler & Potter (1991) Discovering Enzymes, p.206. Catalytic Triad. Gly 193. His 57. - PowerPoint PPT Presentation
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Page 1: COO

1

COO-

R group

胺基酸基

L-Form Amino Acid

H = Glycine

CH3 = Alanine

H N3+

H

Juang RH (2005) BCbasics

sp3

Page 2: COO

2

新的 Ile16 N- 端可穩定 Asp194

Asp 102

His 57 Ser 195

Asp 194

Gly 193

Ile 16

+NH3

Catalytic Triad

Adapted from Dressler & Potter (1991) Discovering Enzymes, p.206

Nelson & Cox (2000) Lehninger Principles of Biochemistry (3e) p.112

I16

S195

D194

Page 3: COO

3

Source Analyzer Detector

ESI-MS/MS can analyze smaller fragments

Adapted from Liebler (2002) Introduction to Proteomics, p.68 ,70

Quadrupole 四極棒

LC +

+

+

+ ++

+

++ +

+

+high

voltage needle

solvatedions

desolvatedions

ElectroSpray Ionization

-

+

+

(or Ion-trap, Q-TOF)

Triple Quadrupole

ESI MS/MSLC

-

++

++ +

+

+

Q1 q2Q3更小片段挑選片段

鈍氣轟炸

繼續分析

也可以加上 TOF

Page 4: COO

4

不同酵素可能採取類似的催化機制

O -

C

Sesame Triad

Hi, Everybody!Hi, Everybody!

←有用的組合

↙有趣的組合

Juang RH (2005) BCbasics

Page 5: COO

5

+ n

+基本粒子基本粒子

原子核原子核原子原子

d

u

u

--

--

原子核

中子

由質子和中子組成

由原子核與電子組成

質子和中子各由三個夸克組成

質子

夸克取材自牛頓雜誌 (1991) 第 93 期 , p.103

電子

由基本粒子到原子

Page 6: COO

6

(R)relaxed state

(T) tense state

血中氧分子的運送

HemoglobinHemoglobin

Lung氧氧分分子子

MyoglobinMyoglobin

Muscle

靜 脈

動 脈環境氧濃度高時Hb 快速吸收氧分子

環境氧濃度低時Hb 迅速釋出氧分子

任何一個次体接受氧分子後,會增進其它次体吸附氧分子的能力

Juang RH (2004) BCbasics

Page 7: COO

7Adapted from Milstein (1980) Scientific American, Oct. p.58

1

23

4

mm

mm

1

2 34

1 2 3 4

單株抗體

細胞融合

取出脾細胞

+癌細胞

各抗體分開

x

傳統抗血清

抗 原

免 疫

所有抗體混合

1 23 4

BALB/c

1 2 3 4

1 23 4

B 細胞

Antibody production

Page 8: COO

8

提高基質濃度增強酵素活性表現

21 3 4 5 6 7 80

0 2 4 6 8

基質濃度 mole

生成物濃度

80

60

40

20

0

S+E

P

(

在固定時間內反

應)

Juang RH (2004) BCbasics

Page 9: COO

9

■直立式電泳裝置

Lowerchamber

Upperchamber

+-

+

CoolingWater

RunningGel

StackingGel

Power supply100~150 V

Juang RH (2005) EPAThe vertical rod gel is the prototype of modern electrophoresis

Page 10: COO

10

細胞對血中葡萄糖濃度反應迅速

Glycogen phosphorylase Glycogen synthaseE

nzym

e ac

tivity

0 2 4 6 8Time (min)

葡萄

反應非常迅速 →Adapted from Stryer (1995) Biochemistry (4e) p.597

不是基因層次的控制

Page 11: COO

11

+nn+

氫 H1

氦 He2

Juang RH (2006) BCbasics