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1 y, V+ f; O% {; v% f! D/ g) Z
/ \% Q) _ g3 D' j0 g! AProteomics in Practice. P' ?6 I# z+ O
A Guide to Successful Experimental Design- S- f e. p, a' x% `* s9 @: r% Q
3 j. m% _& s- Z2 s
Abbreviations, Symbols, Units XV& Z/ T! W' R" L; u, [
Introduction 1
, [9 Y( c5 l0 z1 History 1. `5 E- s+ F& \8 u# N" t
2 Critical Points 88 J% a T# p1 ]0 ~' B" P, n
2.1 Challenges of the Protein Samples 8
* S/ ~3 Q) p0 R+ f2 u/ w- G2.1 Challenges of the Analysis Systems 11( X& M4 ^- K& y. @, g+ i% A
3 Proteomics Strategies 12
- w4 H1 g4 R- ?* S+ i3.1 Proteome Mapping 12& `' k, Y" J8 k2 l5 k
3.2 Differential Analysis 12& I8 k' m% F4 p* Z7 ^
3.3 Time Point Experiments 13
2 d3 _& \" P) g$ ]3 A; ~: }3.4 Verification of Targets or Biomarkers 13
( }( {( C9 W4 Q o2 l3.5 Integration of Results into Biological Context 13
) j- U* t0 k! R' R0 H- s3.6 Systems Biology 138 j# k; N L1 `! x. c3 I+ z
4 Concept of Experimental Planning 14* i2 z$ F# E7 D0 c& h) B% ]7 @) F
4.1 Biological Replicates 14
7 R; J: j# I9 Q% O3 o; Q# J# `4.2 Pooling of Samples: Yes or No? 146 ^( u6 R' \/ @& o, V* \0 d
4.3 Pre-fractionation of Samples: Yes or No? 14
4 ^2 u) \) N% \4 ?4.4 Which is the Best Workflow to Start With? 15" \8 Y, a' S5 }+ ?4 i
Part I: Proteomics Technology# {9 Y0 P/ F7 S* T
1 Electrophoretic Techniques 19- z! d. H) _1 N8 t2 u T
1.1 The Principle of Electrophoresis and Some Methodological
$ ?! P% O; E7 q4 U6 E4 JBackground 19
6 m$ R+ y& u) m1.1.1 Free Flow Electrophoretic Methods 20
6 x3 `+ |- }0 R6 K0 @& r1.1.2 Gels for Electrophoretic Techniques 21
/ o$ c5 S. g1 ]& K* |9 l0 U7 x1.1.3 Electroendosmosis Effects 21
) u3 b( U6 k, C" j: ? z1.2 Polyacrylamide Gel Electrophoresis 22" Q' I, i: N5 ]7 v8 v% E" J4 p
" b; [- x7 i g8 e/ y$ C3 a
1.2.1 The Polyacrylamide Gel 226 L1 H0 B v# I. Y
1.2.2 SDS Polyacrylamide Gel Electrophoresis 27
) ^/ |, O2 C7 O* e7 R1.2.3 Blue Native Electrophoresis 32: }& @* h7 i" \8 D- M& V2 s9 M
1.2.4 Cationic Detergent Electrophoresis 34! d5 H( {8 u+ C/ X9 l
1.3 Blotting 353 C0 N2 ^: }2 v
1.3.1 Electrophoretic Transfer 36
7 a" d7 W9 v3 Z% B1.3.2 Protein Detection on the Membrane 36' T$ W: H6 x# ?' K/ ], R
1.4 Isoelectric Focusing 38, m6 M$ R6 g% `1 C! F
1.4.1 Theoretical Background 39
+ g) f% S) W: Z# s- a& I8 D: }9 O1.4.2 Preparation of IEF Gels 44$ | @+ P3 \& n( U: z8 J+ `
1.4.3 Isoelectric Focusing in Proteomics 45
0 Y, Z+ @ \+ j! F& ^7 ~. i" Q1.5 Two-dimensional Electrophoresis 53
& p5 B9 ?" E6 p+ ?8 C# O' D' s- _0 r1 I1.5.1 Sample Preparation 53
0 Q, N* \, W( L: q1.5.2 Pre-labeling of Proteins for Difference Gel Electrophoresis 68
, B1 X$ q+ C+ l3 j: O6 g/ E9 A1.5.3 First Dimension: Isoelectric Focusing in IPG Strips 77" Y2 ?. \: K7 W' a1 R0 A v
1.5.4 Second Dimension: SDS Electrophoresis 100
9 {7 _" {' t( Y+ D8 o2 U4 y0 M, V8 y1.5.5 Detection of Protein Spots 119
% `/ t, @1 s6 T, k I1.6 Image Analysis 125' d0 [. z: j8 Z0 |" D/ w8 e
1.6.1 Image Acquisition 125
: w0 I( ]+ O8 y7 S5 U1.6.2 Image Analysis and Evaluation 1290 w& a) M1 r( ^' ?; p% H; H5 [
1.6.3 Use of 2-D Electrophoresis Data 137
5 u6 z( n! `$ F; F7 y# K1.7 Spot Handling 137
5 I9 C. U6 @1 J0 ~! L1 ]* {- Y1.7.1 Spot Picking 139
8 T& k! r0 |! b1.7.2 Protein Cleavage 1417 t: v; ^1 w8 ^4 }+ k# _1 Z; g
Liquid Chromatography Techniques 1516 r( }' j# X3 R) o% j% W
2.1 Basic Principles of Important Liquid Chromatography5 L8 I' K8 L# T+ a
Techniques 151
/ V3 ?# k- f: Y8 ~( v1 G2.1.1 Ion Exchange Chromatography 153
. b1 s9 Z! ~" p4 s2.1.2 Reversed Phase Chromatography 162; f5 J6 d5 q/ \+ Y
2.1.3 Affinity Chromatography 167
. |3 O' q5 b* r3 P3 v+ f( U2.1.4 Gel Filtration 172
% Q) c' `: e: m! Y8 e3 Z% z2.2 Strategic Approach and General Applicability 174# M0 p# L; z* P, e8 P0 d
2.3 Liquid Chromatography Techniques and Applications in Proteome
7 v" O8 S, p, G) T3 e# CAnalysis 176
' i' W2 K( ~8 V- u2.3.1 Peptide Separation 176
) x& J: S8 w; h/ _5 M2.3.2 2DLC Peptide Separation 179" l7 z- a9 r- Y1 A3 b& I
2.3.3 Affinity Chromatography and LC-MS/MS 187
( \1 q4 k) V( c" A2.3.4 Protein Pre-fractionation 1896 J. c) J8 m" f0 }3 c
2.4 Practical Considerations and Application of LC-based Protein, D B: T) e$ T) h/ F' Z& o
Pre-fractionation 194
- E O$ ?; F( s" q9 t1 W: Q2.4.1 Sample Extraction and Preparation 196, b, r/ {- R: a/ X( ]. c0 h
2.4.2 Experimental Setup 1978 C- {$ ^/ l7 x
2.4.3 Ion Exchange Chromatography and
* Y- c1 y. s$ N WProtein Pre-fractionation 198
3 B. {5 S0 e |* i1 M8 {% }Contents, m y6 A1 ]3 ~3 X
2.4.4 Reversed Phase Chromatography and
0 }; O1 a/ ~$ F. d: W$ o0 e" TProtein Pre-fractionation 2051 G0 F9 y/ f# m- v2 S# r/ c
2.4.5 Fraction Size and Number of Fractions 210 p5 J; {' t& \! r7 i k; r
2.5 Critical Review and Outlook 211
2 \7 z9 }" O' W, x) ]! r' H3 Mass Spectrometry 215! i1 P- L' K6 E. i3 k
3.1 Ionization 218
+ h; q) U/ v: A y3.1.1 Matrix Assisted Laser Desorption Ionization 2184 J. _" ]! x8 M( q5 f
3.1.2 Electrospray Ionization 222
: N" ~3 G n) e4 D$ |3 e* U' ~3.2 Ion Separation 225, F) y, L1 }% H9 G! J9 C# X" O
3.2.1 Time-of-Flight Analyzer 225
# P5 J* e8 y/ F0 ~. ?3 M0 m9 X3.2.2 Triple Quadrupole Analyzer 2270 i6 @ S: n. \6 Z0 [, R
3.2.3 Quadrupole Ion Trap 2280 Q. M2 v& G$ a% a* f/ I
3.2.4 Quadrupole Time-of-Flight 230
1 y& \- h" }4 ~2 ?# P9 S! @3.2.5 Hybrid Triple Quadrupole Linear Ion Trap 231/ A- ]: ?" l d" |8 V+ Q
3.2.6 TOF/TOF Analyzer 231: M$ {( |' m$ i+ P) s
3.2.7 Fourier Transform Ion Cyclotron 232
- d4 |3 o. ?- s* U2 {3.2.8 Orbitrap 233
( o7 C% E( w( r) o( T3.3 Generating MS Data for Protein Identification 233
4 m) w" p b( Z- j( t3.3.1 Peptide Mass Fingerprint 234
. l- Y) a# m( y- k3.3.2 Peptide Mass Fingerprint Combined With Composition, G8 M2 h. F( v. |& m S- y
Information 237
5 ~; w( k6 l+ X, l0 Q2 H6 F3.3.3 Peptide Mass Fingerprint Combined With Partial Sequence% \3 |+ F0 T& ^7 c" A) A
Information 2380 Z1 {0 E: P% r" p4 l$ ?% ?
3.3.4 Tandem Mass Spectrometry 242$ B; c; ?' r% A
3.4 Protein Characterization 2580 y8 K6 `0 ^$ l4 h
3.4.1 Phosphorylation Analysis 259
) O0 Y( s& j K3.4.2 Affinity Chromatography 260$ W1 c8 @$ x5 Q X
3.4.3 Chemical Derivatization 261
9 w# E) r+ b% ^+ @+ [# j3.4.4 Glycosylation 263' L; I% V7 F' r: `6 _4 _8 r& D
3.5 Protein Quantification Using Mass Spectrometry 264
* @8 ]; V0 {6 W) y0 ~3.5.1 Stable Isotope Labeling Approaches 264' _7 D, v3 D% q# b1 R, o
3.5.2 Isotope-coded Affinity Tags 265 g& p4 R5 f3 [
3.5.3 Stable Isotope Labeling with Amino Acids in Cell Culture 266
' t t5 E" B% o5 s* b3.5.4 AQUA 267. e, ~7 }# }1 i/ N8 s6 B
3.5.5 iTRAQ 267: G- _* G2 Z. S6 E" U# Z6 y! x
3.5.6 Non-labeling Software Approaches 2686 S, w: y; Q5 v( `" _4 ?7 j
3.6 MS Strategies 271
+ j3 y0 o) ?* U1 n7 Q1 l3.6.1 Bottom up Approach 271: [: f w0 U% ^; W1 q$ g
3.6.2 Top down Approach 272
7 Y" C9 E2 ?% y5 u- l6 X4 Functional Proteomics: Studies of Protein–Protein Interactions 2732 e. A* N( S9 k
4.1 Non-immunological Methods 273
+ x" u! E# f( a8 r" p2 y$ ]# Q9 s% w( w4.1.1 Separation of Intact Multi-protein Complexes 273! @( {0 O5 {$ u
4.1.2 Probing with Interaction Partners 273& y B; r: y& K! ~' ?* B; m9 s
4.1.3 Surface Plasmon Resonance 274
4 z# J; @. B7 d+ J' V& p4.2 Antibody-based Techniques 275 \; x! J: [3 ]) E
4.2.1 Western Blotting and Dot Blots 275
8 {; X, C |$ r7 n4.2.2 Protein Microarrays 276
+ ]) N2 y7 K4 F1 H1 _+ E3 wPart II: Practical Manual of Proteome Analysis 279$ `3 q; v, |0 }+ n- S
Equipment, Consumables, Reagents 281
/ e: x' A* M2 N" s: ?# qStep 1: Sample Preparation 287
: y b6 K0 G- y% Z9 ? N2 QStep 2: Fluorescence Difference Gel Electrophoresis 299
3 u4 }$ M: f, @- ?& _6 A YStep 3: Isoelectric Focusing 3094 B G% G6 m3 T0 r/ g7 n2 L
Step 4: SDS Polyacrylamide Gel Electrophoresis 323
- N- q8 P) e: H- x' ZStep 5: Scanning of Gels Containing Pre-labeled Proteins 357
! E8 D$ ?; q/ O1 H z5 @Step 6: Staining of Gels 361) O" J* I# f! b( E: E
Step 7: Image Analysis and Evaluation of DIGE Gels 373
- n# M3 T2 _5 a/ [4 K2 q- G" w; @Step 8: Spot Excision 383
0 @# }: K2 x7 F6 f9 n& cStep 9: Sample Destaining 387: [7 j" c# e- Z p& A }1 o
Step 10: Protein Digestion 389
: v' e: e2 V2 M$ V: J% F9 _5 p+ I5 Z+ hStep 11: Microscale Desalting and Concentrating of Sample 393+ U% n* ?0 N* ~7 W2 k( Z
Step 12: Chemical Derivatization of the Peptide Digest 397
9 W! P$ W# R B5 ?7 Q3 dStep 13: MS Analysis 399! S4 e+ I! y% S& I
Step 14: Calibration of MALDI-ToF MS 403) K* y% |7 D1 H
Step 15: Preparing for a Database Search 407% `# W, Q$ o& I; B! v
Part III: Trouble Shooting 4113 D8 n5 W6 f' ~
1 Two-dimensional Electrophoresis 413
4 t" ^9 {3 H5 }8 S: S1.1 Sample Preparation 413+ ~( v/ i+ ^, f7 C4 S; ~( O$ v
1.2 Isoelectric focusing in IGPG strips 414
# ^, b4 o7 E, x9 w1.3 SDS PAGE 416
0 Y& u" h2 r. n, u# y1.4 Staining 417
' n5 V0 [3 l$ W; O% n; q1.5 DIGE Fluorescence Labeling 4181 u) p, J: h x% r
1.6 Results in 2-D Electrophoresis 421+ o, b" ?9 H! h5 a" d
2 Mass Spectrometry 4294 z: E; P. @# |( A; w
+ R4 u! y, ]4 h0 V/ S# c9 L9 P: @
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