The Handbook of Analysis and Purification of Peptides by RP-HPLC

8/3/2019 The Handbook of Analysis and Purification of Peptides by RP-HPLC

1/36

The Handbook ofAnalysis and Purification of

Peptides and Proteins byReversed-Phase HPLC

Third Edition, 2002

This handbook presents the basic principles of reversed-phase HPLC for theanalysis and purification of polypeptides. For further details regardingreversed-phase HPLC separations of polypeptides please refer to the technical

references at the back of the Handbook or contact the Grace Vydac Technical

Support Group.

Tab le of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Mechanism of Interaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

The Role of the Column in Polypeptide Separations . . . . . . . . . . . . . . . . . . . .8

Analytical Conditions: The Role of the Mobile Phase and Temperature . . . .17

Reversed-Phase HPLC/Mass Spectrometry . . . . . . . . . . . . . . . . . . . . . . . . . . .26

The Role of Reversed-Phase HPLC in Proteomic Analysis . . . . . . . . . . . . . .30

Examples of the Use of Reversed-Phase HPLC

in the Analysis of Polypeptides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32HPLC as a Tool to Purify and Isolate Polypeptides . . . . . . . . . . . . . . . . . . . .40

Viral Inactivation During Reversed-Phase HPLC Purification . . . . . . . . . . . .50

Appendices

Appendix A: Column Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Appendix B: The Care and Maintenance of Reversed-Phase Columns . . . . .53

Appendix C: The Effect of Surfactants on Reversed-Phase Separations . . . .56

Appendix D: Ion Exchange Chromatography:

Orthogonal Analytical Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Appendix E: The Effect of System Hardwareon Reversed-Phase HPLC Polypeptide Separations . . . . . . . . . . . . . . . . . . . .60

Technical References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

The G race Vyda c Tec hnical Support Group is ava ilable for discussions

regarding your bio-separation questions.

Please contact us at:

Phone 1.800.247.0924 (USA) 1.760.244.6107(International)

Fax 1.760.244.1984 (USA) 1.888.244.1984 (International)

www.gracevydac.com

1


2/36


3/36


4/36


5/36


6/36


7/36


8/36


9/36


10/36


11/36


12/36


13/36


14/36

LC/ MS Uses Short Columnsfor Rapid Analysis

The trend in LC/MS toward faster

analyses with reduced resolution

has led to the use of relatively short

columns with very fast gradients.

The trend toward reduced resolutionand faster separations has led to the

use of short columns packed withsmaller particle adsorbents thannormal. The most commonly usedparticle size in short columns is threemicrometers. Using three micrometercolumns of five to ten centimeterlength with fast gradients enablespolypeptide separations to becompleted in just a few minutes.

Figure 24 shows the separation offive proteins in less than fiveminutes using a 50 mm longcolumn packed with 3 m particlesusing a fast gradient.

The development of theelectrospray interface to couple

mass spectrometry with HPLC hascaused a virtual explosion in theuse of LC/MS in the analysis ofpolypeptides. RP-HPLC peptidemaps are routinely monitored by anon-line mass spectrometer, obtainingpeptide molecular weights andcausing fragmentation of peptides

to obtain sequence information.

The combination of mass spectrometrywith HPLC reduces the need forchromatographic resolution becauseof the resolving capacity of the massspectrometer. Analysis times aregenerally short to best utilize thesophisticated mass spectrometer.Detection sensitivity is often muchbetter with mass spectrometry thanwith UV detection.

Reversed-Phase HPLC/ Mass Spectrometryfor the Analysis of Polypeptides

To

Figure 24. Column: C18, 3 m 4.6 x 50 mm (VYDAC 238TP3405).Flow rate: 4.0 ml/min.Eluent: Gradient from 2045% ACN in aqueous 0.1% TFA in 4 min. Sample: protein standards.(1) ribonuclease, (2) insulin, (3) cytochrome c, (4) BSA and (5) myoglobin.

Rapid Separation of Proteins Using Short (50 mm) Column

1

2

3

4

5

0 1 2 3 4 5

Minutes


15/36


16/36


17/36


18/36


19/36


20/36


21/36


22/36


23/36


24/36


25/36


26/36

The data in the table belowillustrates that some viruses arehighly inactivated in ethanol(Xenotropic Murie Leukemia Virusand Pseudorabies Virus) while others(Minute Virus of Mice and HumanAdenovirus type 5) are less stronglyinactivated. The combination ofethanol and chromatographic

separation, however, significantlyreduces the infectivity level of allfour viruses.

Reversed-phase HPLC usuallyreduces or eliminates viral

activity in protein preparations,making it a valuable step inrecombinant protein purification.Viral inactivation occurs throughtwo mechanisms. First, exposure toethanol inactivates many viruses.Second, viruses can be separated

from protein in the chromatographicstep (see Figure 47).

Viral inactivation by ethanol and chrom

Log10 infectivity reduction by exposure to or a combination of ethanol and chromato

XmuLV

Ethanol exposure >4.9.13RP-HPLC in ethanol >5.9

XMuLVXenotropic Murine LeukemiaMVMMinute Virus of Mice

Adeno5Human adenovirus type 5

PRVPseudorabies Virus

Figure 47. Separation of Xenotropic Murine Leukemia Virus (XMuLV) from target protein during preparative HPLC.Column: VYDAC C

4, 20-30 mmElution: Ethanol gradient

Data courtesy of Holly Harker and Marcus Luscher, Amgen, Boulder, Colorado

Separation of Xenotropic Murine Leukemia Virus

XMuLV Viruswas detectedin this peak

XMuLV Viruswas below the

limit of detectionin this peak

300

200

100

00 50 100 150 200 mL

Ethanol Gradient

mau

Viral Inactivation DuringReversed-Phase HPLC Purification


27/36


28/36


29/36


30/36


31/36


32/36


33/36


34/36


35/36


36/36

70

About the author

David Carr, a graduate of U.C. Berkeley, first became involved in HPLC

in 1971, when the technique was in its infancy. As the technical marketing

manager of Vydac from 19841996, David was involved in the use of

reversed-phase HPLC for protein and peptide separations for both analytical

and preparative purposes. Working with companies such as Genentech,

Amgen, and Immunex, David assisted in developing protein and peptide

separation methods for quality control as well as consulting on large-scale

preparative separations. Since 1996 David has developed and instructed

courses in analytical biotechnology and HPLC. His short course, Fundamentals

in Analytical Biotechnology, is very popular among biotechnology companies

(details may be found at www.bioanalyticaltech.com ). David is the author of

the first two editions ofThe Handbook of the Analysis and Purification

of Peptides and Proteins by Reversed-Phase HPLCas well as this, the

Third Edition.

Hesperia, Ca lifornia, USAISO m anufact uring, research and

developme nt, app lications and shipping

The Sepa rations Group

17434 Moja ve Street

Hesperia , CA 92345 USA

Phone: (800) 247-0924 or (760) 244-6107

Fax: ( 888) 244-6610 or (760) 244-1984

Columbia, Maryland, USAExecut ive offices,sales and m arketing

manag ement, and separations research

W.R.Grace & Co.Conn.

7500 Grace Drive

Colum bia, MD 21044 USA

Phone: (410) 531-4000

Toll Free : (800) 638-6014

Fax: (410) 531-4273

Baltimore, Maryland, USAISO m anufact uring and shipping

W.R.Grace & Co.Conn.

5500 Chemical Road

Baltimore, MD 21226 USA

Phone: (410) 355-4900

Fax: (410) 354-8945

Worms, GermanySepa rations research and ISO man ufac turing

Grace GmbH & Co. KG

In der Hollerhecke 1

67545 Worms,G erma ny

Phone: (49) 6241 403 0

Fax: ( 49) 6241 403 211

Customer a nd Tec hnical Service17434 Moja ve Street

Hesperia , Ca lifornia 92345

Phone: 760-244-6107

Fax: 760-244-1984

On-lineexperts@vydac .com

www.gracevydac.com

The information contained he rein isb ased on our testing and experienc e and iso ffered for the users consideration, investigationand verification. Since ope rating and use cond itionsvary and since we d o not c ontrol such c ondiitions,w e must DISCLAIMANY WARRANTY,EXPRESSED OR IMPLIED,w ith regard t o resultsto b e ob taine d from the use of this prod uct. Test metho ds are

available o n request. 2002 W.R.Grac e & Co.-Conn.All rightsreserved.VYDAC isa registered trade mark of The SeparationsGroup,a wholly-owned subsidiary of W.R.Grace & Co .Conn.

The Handbook of Analysis and Purification of Peptides by RP-HPLC

Documents

Transcript of The Handbook of Analysis and Purification of Peptides by RP-HPLC