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of structures in large protein complexes, profiling the plasma proteome, examining the role of proteins and protein folding in neurodegenerative diseases, identifying possible cancer-related markers in blood, urine, or saliva, and increasing the efficiency of drug-discovery. Ion mobility-mass spectrometry techniques also allow the measurement and correlation of a wide variety of different characteristics simultaneously in a single analysis. Researchers can use these techniques to examine complex biological samples for
31:
346:
introduced into a drift tube by electrospray ionization. Structures separate based on differences in their mobilities. By exposing specific states to energizing collisions, new structures can be established and tracked through different conformational changes. Changes in conformation during the gas-phase data can then be mapped back to the original populations of structures. In this way, researchers can understand the possible pathways between structures.
326:(IM-MS) and their application to the structural analysis of intact proteins is considered a "particularly important milestone" in the application of IM-MS to the examination of biomolecular structures. Clemmer and his colleagues have developed at least a dozen different configurations combining modular components for ion-mobility with mass spectrometry instruments. These include combining ion mobility with
1320:
Myung, Sunnie; Lee, Young Jin; Moon, Myeong Hee; Taraszka, John; Sowell, Rena; Koeniger, Stormy; Hilderbrand, Amy E.; Valentine, Stephen J.; Cherbas, Lucy; Cherbas, Peter; Kaufmann, Thomas C.; Miller, David F.; Mechref, Yehia; Novotny, Milos V.; Ewing, Michael A.; Sporleder, C. Ray; Clemmer, David E.
317:
Ion mobility methods separate ions into different groups based on their ability to move through an electrically-charged buffer gas. This enables complex mixtures to be differentiated in ways that could not be achieved by mass spectrometry alone. Even minute amounts of compounds can be distinguished
349:
Understanding how protein folding occurs in three-dimensional molecules is one of biology's enduring problems. Proteins with different shapes often have very different biological activity and medical usefulness. Clemmer's work has applications in the life sciences for understanding the conformation
345:
could be differentiated based on their mobilities. In addition, the mobility of different chiral isomers was related to their protein folding. More recent techniques enable researchers to track transitions in the conformations of macromolecular ions during the gas phase. A short pulse of ions is
337:
Such equipment allows researchers to learn more about both the structures and the conformational dynamics of systems. Clemmer has identified fundamental relationships between charge states and structures, and has shown that a single charge state can exist in more than one conformation in gaseous
321:
Clemmer has helped to establish ion mobility as both a powerful tool and a field of research through his "thorough studies" and "revolutionary instrumental methods". In early work, Clemmer and
Jarrold used long drift tubes with nonclustering gas atmospheres to increase the resolving power of
257:
In 1995, Clemmer joined the
Department of Chemistry at Indiana University. He served as chair of the Chemistry Department from 2002 to 2006. He is a full professor, and holds the Robert and Marjorie Mann Chair of Chemistry, to which he was named in 2002. He has published more than 230 papers.
2151:
2144:
2137:
205:
mass spectrometry. He has received a number of awards, including the
Biemann Medal in 2006 "for his pioneering contributions to the integration of ion mobility separations with a variety of mass spectrometry technologies."
1367:
Lanucara, Francesco; Holman, Stephen W.; Gray, Christopher J.; Eyers, Claire E. (21 March 2014). "The power of ion mobility-mass spectrometry for structural characterization and the study of conformational dynamics".
309:
Clemmer is particularly interested in studying the structural characterization and conformational dynamics of complex low-symmetry systems. Clemmer develops scientific instruments and methods for the examination of
595:
242:. He worked with Kenji Honma on electron transfer mechanisms and reactions of excited-state metal atoms and gaseous molecules. From 1993 to 1995, Clemmer was a postdoctoral research associate at
1581:
1323:"Development of High-Sensitivity Ion Trap Ion Mobility Spectrometry Time-of-Flight Techniques: A High-Throughput Nano-LC-IMS-TOF Separation of Peptides Arising from a Protein Extract"
1754:
1124:
Ibrahim, Yehia M.; Baker, Erin S.; Danielson, William F.; Norheim, Randolph V.; Prior, David C.; Anderson, Gordon A.; Belov, Mikhail E.; Smith, Richard D. (February 2015).
2258:
2290:
435:
1089:
Shelimov, K.B.; Clemmer, D.E.; Hudgins, R.R.; Jarrold, M.F. (1997). "Protein
Structure in Vacuo: The Gas Phase Conformations of BPTI and Cytochrome c".
603:
2404:
2324:
2314:
2236:
1935:
754:
2372:
2111:
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2354:
2272:
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2216:
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states. Such techniques can be used for the study of both proteins and peptides. In early work, Clemmer showed that multiple conformations of the
2232:
2099:
1724:
323:
222:, where he originally majored in music, before changing to science. He received his B.S. in chemistry with honors in 1987. He then attended the
941:
1783:
2268:
1582:"Professor David Clemmer awarded the 2023 Field and Franklin Award for Outstanding Achievement in Mass Spectrometry :Department of Chemistry"
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1207:
861:
238:
During 1992–1993, Clemmer was a postdoctoral fellow in Japan, supported by the Japan
Society for the Promotion of Science Fellowship at the
1551:
1447:
412:
2018, John B. Fenn
Distinguished Contribution, shared with Martin F. Jarrold and Gert von Helden, American Society for Mass Spectrometry
838:
645:
817:
Clemmer, David E.; Jarrold, Martin F. (June 1997). "Ion
Mobility Measurements and their Applications to Clusters and Biomolecules".
1762:
521:
2438:
2161:
1928:
1038:
McLean, John A. (October 2009). "The mass-mobility correlation redux: The conformational landscape of anhydrous biomolecules".
458:
1430:
1685:
1518:
2453:
1895:
1265:"ESI/Ion Trap/Ion Mobility/Time-of-Flight Mass Spectrometry for Rapid and Sensitive Analysis of Biomolecular Mixtures"
1921:
1017:
709:
331:
327:
202:
1836:
239:
190:
136:
189:) is an analytical chemist and the Distinguished Professor and Robert and Marjorie Mann Chair of Chemistry at
2443:
2308:
1206:
Hoaglund, Cherokee S.; Valentine, Stephen J.; Sporleder, C. Ray; Reilly, James P.; Clemmer, David E. (1998).
1632:
762:
2252:
1181:
533:
470:
318:
and differentially examined according to characteristics such as size, shape and charge as well as mass.
2392:
464:
1808:
1732:
2027:
514:
451:
428:
251:
214:
Clemmer was born on
February 23, 1965, to Ed Clemmer, an artist, and his wife MaryAnn, a teacher, of
198:
90:
1755:"Record 10 faculty members receive Fellow distinction from AAAS, world's largest scientific society"
1671:
952:
2242:
2178:
1787:
1295:
1238:
884:
243:
2448:
1559:
1478:
1420:
786:"The Importance of Electron Transfer Mechanism in Reactions of Neutral Transition Metal Atoms"
290:
2366:
2336:
383:
2069:
1263:
Henderson, Sheila C.; Valentine, Stephen J.; Counterman, Anne E.; Clemmer, David E. (1999).
557:
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1047:
826:
657:
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122:
1608:
8:
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1979:
1904:
1505:
Differential Ion
Mobility Spectrometry: Nonlinear Ion Transport and Fundamentals of FAIMS
227:
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148:
72:
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661:
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2081:
2003:
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1401:
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1125:
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1071:
842:
681:
508:
495:
2002, named Robert and
Marjorie Mann Chair of Chemistry, Indiana University Bloomington
266:
223:
77:
197:, where he leads the Clemmer Group. Clemmer develops new scientific instruments for
2410:
2376:
2360:
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2206:
2184:
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1991:
1961:
1955:
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1426:
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673:
274:
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126:
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and complex biomolecular mixtures in the gas phase using ion-mobility spectrometry.
301:
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2222:
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1405:
1385:
1334:
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1222:
1153:
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1110:
1098:
1055:
876:
834:
797:
665:
143:
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1985:
1899:
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499:
485:
278:
270:
247:
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1059:
669:
2386:
2212:
2200:
1973:
1908:
1861:
1526:
1149:
403:
2023, Field and Franklin Award for Outstanding Achievement in Mass Spectrometry
286:
1208:"Three-Dimensional Ion Mobility/TOFMS Analysis of Electrosprayed Biomolecules"
912:
394:
In addition to playing several instruments, Clemmer enjoys running marathons.
322:
ion-mobility spectrometry. Clemmer's work on gas-phase separation methods for
2432:
2318:
2226:
2105:
2087:
2051:
2015:
1997:
1967:
1944:
293:, Stephen Valentine, Cherokee Hoaglund-Hyzer, and Catherine Srebalus Barnes.
282:
104:
2039:
1446:
Hoaglund-Hyzer, Cherokee S.; Counterman, Anne E.; Clemmer, David E. (1999).
1322:
226:, receiving his Ph.D. in physical chemistry in 1992. His thesis advisor was
2194:
2021:
1892:
1474:
1397:
1346:
1167:
1067:
677:
363:
342:
163:
1291:
1234:
860:
Clemmer, David E.; Hudgins, Robert R.; Jarrold, Martin F. (October 1995).
839:
10.1002/(SICI)1096-9888(199706)32:6<577::AID-JMS530>3.0.CO;2-4
2075:
2045:
802:
785:
717:
646:"Focus in Honor of David E. Clemmer, Recipient of the 2006 Biemann Medal"
339:
311:
880:
330:(TOF). They also developed the first instrument for nested ion-mobility
30:
2117:
2057:
1389:
441:
2011–2012, Fellow, Japanese Society for the Promotion of Science (JSPS)
355:
351:
1466:
1338:
1283:
1226:
1102:
984:"Tracy M. Sonneborn Award recipient and Provost's Professor announced"
1913:
359:
1609:"David E. Clemmer: University Honors and Awards: Indiana University"
1126:"Development of a new ion mobility time-of-flight mass spectrometer"
250:
and protein conformation in the gas phase, using techniques such as
1262:
230:, with whom he studied transition metal ions in gaseous reactions.
58:
2093:
1822:
1710:
1636:
477:
201:(IMS/MS), including the first instrument for nested ion-mobility
1419:
Gross, Michael L.; Chen, Guodong; Pramanik, Birendra N. (2012).
1205:
517:(ACS), Division of Analytical Chemistry, Arthur F. Findeis Award
1445:
1182:"Clemmer Group Development of New Ion Mobility Instrumentation"
447:
2009, Tracy M. Sonneborn Award, Indiana University Bloomington
1088:
421:
2014, Distinguished Professor, Indiana University Bloomington
1123:
862:"Naked Protein Conformations: Cytochrome c in the Gas Phase"
1519:"Spectroscopy Society of Pittsburgh January Meeting, 2013"
755:"University Honors & Awards: Honoree David E. Clemmer"
643:
1603:
1601:
1012:(Third ed.). Boca Raton, Fla.: CRC. pp. 30–31.
2159:
424:
2014, Distinguished Chemistry Alumni, University of Utah
1422:
Protein and peptide mass spectrometry in drug discovery
1366:
1731:. ACS Division of Analytical Chemistry. Archived from
1598:
1007:
1040:
Journal of the American Society for Mass Spectrometry
859:
650:
Journal of the American Society for Mass Spectrometry
1319:
1008:Eiceman, G.A.; Karpas, Z.; Hill, Jr., H.H. (2014).
977:
975:
973:
436:
American Association for the Advancement of Science
246:, where he worked with Martin F. Jarrold, studying
644:Bierbaum, Veronica M.; Fred W. McLafferty (2007).
1418:
261:Among those who have influenced him, he includes
2430:
1862:"Camille Dreyfus Teacher-Scholar Awards Program"
981:
970:
942:"'Brilliant 10' scientist credits IU colleagues"
378:, a systems biology company, and the founder of
1672:"ASMS John B. Fenn Distinguishing Contribution"
1507:. Boca Raton, Fla.: CRC Press. pp. 25–26.
1439:
816:
2145:
1929:
596:"Professor David Clemmer, Indiana University"
552:
550:
520:1999, Camille Dreyfus Teacher-Scholar Award,
1686:"National Academy of Inventors Fellows Page"
935:
933:
913:"2014 Distinguished Chemistry Alumni Awards"
783:
504:1998–2001, Fellow, Alfred P. Sloan Research
1502:
1496:
1174:
415:2017, Fellow, National Academy of Inventors
209:
2152:
2138:
1936:
1922:
1425:. Hoboken, N.J.: Wiley. pp. 202–203.
1130:International Journal of Mass Spectrometry
982:Connelley-Eskine, Cyndi (April 20, 2009).
639:
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633:
631:
629:
627:
625:
623:
621:
547:
382:, a biotechnology company specializing in
29:
1829:
1256:
1157:
1033:
1031:
1029:
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930:
801:
1893:http://www.indiana.edu/~clemmer/home.htm
1546:
1544:
1360:
1199:
1082:
869:Journal of the American Chemical Society
784:Honma, Kenji; Clemmer, David E. (1995).
749:
747:
745:
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735:
703:
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699:
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695:
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586:
584:
582:
580:
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522:The Camille and Henry Dreyfus Foundation
305:Drift tube for ion mobility spectrometry
300:
1725:"DAC Award in Chemical Instrumentation"
1558:. MIT Technology Review. Archived from
1117:
1001:
618:
2431:
1943:
1552:"David Clemmer, 34 Indiana University"
1037:
1026:
907:
905:
853:
810:
707:
558:"Clemmer Group Prof. David E. Clemmer"
459:American Society for Mass Spectrometry
289:. His graduate students have included
2133:
1917:
1541:
1412:
1313:
732:
692:
600:Waters The Science of What's Possible
575:
444:2010, Adams State Outstanding Alumnus
409:2020, Bicentennial Medal Award Winner
406:2022, Wylie Innovation Catalyst Medal
777:
500:Eli Lilly Analytical Chemistry Award
431:(ACS) Chemical Instrumentation Award
397:
107:, ACS Chemical Instrumentation Award
1717:
902:
710:"Clemmer makes science an art form"
281:, Evan R. Williams, Joseph A. Loo,
13:
1761:. December 1, 2011. Archived from
1523:Spectroscopy Society of Pittsburgh
1503:Shvartsburg, Alexandre A. (2008).
380:Predictive Physiology and Medicine
14:
2470:
1886:
708:Relyea, Linda (August 26, 2010).
507:2000, National Fresenius Award,
328:Time-of-flight mass spectrometry
1854:
1815:
1801:
1776:
1747:
1729:American Chemical Society (ACS)
1703:
1678:
1664:
1650:
1625:
1574:
1511:
2439:21st-century American chemists
1837:"The National Fresenius Award"
1613:University Honors & Awards
759:Indiana University Bloomington
562:Indiana University Bloomington
324:ion mobility-mass spectrometry
240:Himeji Institute of Technology
199:ion mobility mass spectrometry
137:Indiana University Bloomington
1:
540:
526:1999, "Innovators Under 35",
2253:Boris Aleksandrovich Mamyrin
1823:"Sloan Research Fellowships"
819:Journal of Mass Spectrometry
369:
7:
1060:10.1016/j.jasms.2009.06.016
670:10.1016/j.jasms.2007.05.004
534:National Science Foundation
471:National Science Foundation
374:Clemmer is a co-founder of
296:
10:
2475:
2454:Indiana University faculty
1869:Camille Dreyfus Foundation
1150:10.1016/j.ijms.2014.07.034
465:Royal Society of Chemistry
389:
2168:
1951:
1556:Innovators Under 35: 1999
1010:Ion mobility spectrometry
940:Hinnefeld, Steve (2002).
515:American Chemical Society
492:s 10 Most Brilliant List
452:American Chemical Society
429:American Chemical Society
418:2014–2015, ANACHEM Award
252:Ion-mobility spectrometry
233:
158:
154:
142:
132:
118:
111:
100:
91:Ion mobility spectrometry
86:
65:
37:
28:
21:
1907:publications indexed by
1448:"Anhydrous Protein Ions"
473:Special Creativity Award
210:Early life and education
2259:George C. Stafford, Jr.
1841:Northwestern University
1658:"Gert von Helden Group"
244:Northwestern University
714:Adams State University
312:biomolecular structure
306:
2367:Catherine E. Costello
2337:Catherine C. Fenselau
1784:"Akron Section Award"
528:MIT Technology Review
457:2006, Biemann Medal,
384:personalized medicine
304:
2444:Mass spectrometrists
2173:Ronald D. Macfarlane
1633:"MFJ Research Group"
1586:www.chem.indiana.edu
1327:Analytical Chemistry
195:Bloomington, Indiana
185:(February 23, 1965,
123:Analytical chemistry
2399:Peter B. Armentrout
2349:Richard M. Caprioli
1980:Peter B. Armentrout
1382:2014NatCh...6..281L
1142:2015IJMSp.377..655I
1052:2009JASMS..20.1775M
881:10.1021/ja00145a037
875:(40): 10141–10142.
831:1997JMSp...32..577C
720:on 7 September 2015
662:2007JASMS..18.1161B
483:2002, Named one of
334:mass spectrometry.
291:Renã A. S. Robinson
228:Peter B. Armentrout
220:Adams State College
149:Peter B. Armentrout
73:Adams State College
2303:Jesse L. Beauchamp
2291:James A. McCloskey
2162:John B. Fenn Award
2160:Recipients of the
2082:Benjamin A. Garcia
2070:Kristina Håkansson
2004:Gary J. Van Berkel
1945:Biemann Medallists
1898:2012-01-08 at the
1484:on 9 February 2018
1390:10.1038/nchem.1889
1186:Indiana University
917:University of Utah
803:10.1155/1995/25319
536:Early Career Award
509:Phi Lambda Upsilon
480:Achievement Award
454:(ACS) Akron award
307:
267:Jesse L. Beauchamp
224:University of Utah
191:Indiana University
78:University of Utah
2426:
2425:
2417:Jennifer Brodbelt
2411:Carol V. Robinson
2377:Martin F. Jarrold
2361:Scott A. McLuckey
2309:Alexander Makarov
2285:Michael T. Bowers
2207:Keith R. Jennings
2127:
2126:
2034:David C. Muddiman
1992:Carol V. Robinson
1962:Robert R. Squires
1956:Scott A. McLuckey
1467:10.1021/cr980139g
1461:(10): 3037–3079.
1432:978-0-470-25817-0
1339:10.1021/ac030107f
1333:(19): 5137–5145.
1301:on 10 August 2017
1284:10.1021/ac9809175
1244:on 10 August 2017
1227:10.1021/ac980059c
1221:(11): 2236–2242.
1103:10.1021/ja9619059
1046:(10): 1775–1781.
398:Awards and honors
275:Scott A. McLuckey
263:Michael T. Bowers
216:Alamosa, Colorado
187:Alamosa, Colorado
180:
179:
127:mass spectrometry
113:Scientific career
95:mass spectrometry
48:February 23, 1965
2466:
2405:Evan R. Williams
2393:Michael L. Gross
2381:David E. Clemmer
2343:Richard D. Smith
2331:Robert J. Cotter
2325:Marvin L. Vestal
2319:Vicki H. Wysocki
2315:Simon J. Gaskell
2247:Alan G. Marshall
2243:Melvin Comisarow
2237:Don C. McGilvery
2223:Franz Hillenkamp
2191:Christie G. Enke
2154:
2147:
2140:
2131:
2130:
2028:Neil L. Kelleher
2016:Roman A. Zubarev
2010:David E. Clemmer
1938:
1931:
1924:
1915:
1914:
1905:David E. Clemmer
1880:
1879:
1877:
1875:
1866:
1858:
1852:
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1847:
1833:
1827:
1826:
1819:
1813:
1812:
1805:
1799:
1798:
1796:
1795:
1786:. Archived from
1780:
1774:
1773:
1771:
1770:
1751:
1745:
1744:
1742:
1740:
1735:on 24 April 2017
1721:
1715:
1714:
1711:"Awards ANACHEM"
1707:
1701:
1700:
1698:
1697:
1688:. Archived from
1682:
1676:
1675:
1668:
1662:
1661:
1654:
1648:
1647:
1645:
1644:
1635:. Archived from
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1605:
1596:
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1593:
1592:
1578:
1572:
1571:
1569:
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1562:on 15 March 2016
1548:
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1534:
1525:. Archived from
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1509:
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1493:
1491:
1489:
1483:
1477:. Archived from
1452:
1443:
1437:
1436:
1416:
1410:
1409:
1370:Nature Chemistry
1364:
1358:
1357:
1355:
1353:
1321:(October 2003).
1317:
1311:
1310:
1308:
1306:
1300:
1294:. Archived from
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1249:
1243:
1237:. Archived from
1212:
1203:
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1196:
1194:
1192:
1178:
1172:
1171:
1161:
1121:
1115:
1114:
1097:(9): 2240–2248.
1091:J. Am. Chem. Soc
1086:
1080:
1079:
1035:
1024:
1023:
1005:
999:
998:
996:
994:
979:
968:
967:
965:
963:
957:
951:. Archived from
946:
937:
928:
927:
925:
923:
909:
900:
899:
897:
895:
890:on 21 April 2016
889:
883:. Archived from
866:
857:
851:
850:
814:
808:
807:
805:
796:(2–4): 209–220.
781:
775:
774:
772:
770:
765:on 27 April 2015
761:. Archived from
751:
730:
729:
727:
725:
716:. Archived from
705:
690:
689:
656:(7): 1161–1162.
641:
616:
615:
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611:
602:. Archived from
592:
573:
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554:
491:
183:David E. Clemmer
176:
173:
171:
169:
167:
165:
144:Doctoral advisor
51:
47:
45:
33:
23:David E. Clemmer
19:
18:
16:American chemist
2474:
2473:
2469:
2468:
2467:
2465:
2464:
2463:
2429:
2428:
2427:
2422:
2373:Gert von Helden
2297:R. Graham Cooks
2279:Fred McLafferty
2164:
2158:
2128:
2123:
2112:Brandon Ruotolo
2064:Michael MacCoss
1986:Ruedi Aebersold
1947:
1942:
1900:Wayback Machine
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271:R. Graham Cooks
248:protein folding
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2213:Frank H. Field
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1909:Google Scholar
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1809:"Pittcon 2002"
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2185:John B. Fenn
2022:Julia Laskin
2009:
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133:Institutions
112:
2459:1965 births
2269:John Stults
2076:Ryan Julian
1136:: 655–662.
532:1996–2000,
513:1999–2000,
498:2000–2002,
469:2003–2005,
340:hemeprotein
2433:Categories
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1618:2022-09-30
1591:2022-09-30
1272:Anal. Chem
1215:Anal. Chem
541:References
356:proteomics
352:lipidomics
44:1965-02-23
1759:Inside IU
1455:Chem. Rev
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370:Companies
360:glycomics
170:/~clemmer
1896:Archived
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1398:24651194
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1068:19646898
993:28 April
847:16681465
769:28 April
724:28 April
686:10308685
678:17555983
610:26 April
567:26 April
297:Research
166:.indiana
59:Colorado
2094:Ying Ge
1406:2512242
1378:Bibcode
1292:9949724
1235:9624897
1159:4501404
1138:Bibcode
1111:9163743
1048:Bibcode
827:Bibcode
658:Bibcode
478:Pittcon
390:Hobbies
159:Website
55:Alamosa
2419:(2024)
2413:(2023)
2407:(2022)
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362:, and
285:, and
234:Career
119:Fields
101:Awards
1865:(PDF)
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174:.htm
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38:Born
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