BCMP Save the Date! 2015 BCMP Fall Retreat October 28 Chatham Bars Inn, Chatham, MA Send us your news! Are the publications from your lab not listed? Do you have lab news to share? Have your lab’s newsletter representative contact us for the next issue! bcmpnews@gmail.com WANTED The BCMP Quarterly needs writers! We are looking for regular or one-time articles to feature in the newsletter. Topics include: Trainee profiles, interviews with departmental or visiting scientists, literature summaries and reviews, departmental news, local events, conference reports, work/life interest and more! If you have an idea for an article or want to get involved please contact the newsletter at bcmpnews@gmail.com This newsletter is brought to you by the BCMP Trainee Committee Our Mission Statement: The Biological Chemistry and Molecular Pharmacology Trainee Committee is responsible for addressing the needs of the graduate students and postdoctoral fellows in the department. This committee is charged with identifying ways to create a sense of community for students and fellows and to increase interactions between trainees and the faculty. The Committee meets regularly with faculty and departmental administration to suggest and implement improvements for students and fellows. If you have any concerns or suggestions please contact a committee member. New members are welcome! Current Members: Ravi Amunugama (Walter), Luke Chao (Harrison), Jyoti Dev (Chou), Daniela Fera (Harrison), Thomas Graham (Co-Chair, Loparo/Walter), Dane Hazelbaker (Buratowski), Alfredo Hernandez (Richardson), Elissa Hobert (Clardy), James Kath (Co-Chair, Loparo), Krish Karunatilaka (Hogle), Phong Lee (Harrison), Bo Liang (Harrison), Emily Low (Walter), Rafael Luna (Wagner), David Migl (Harrison), Mukesh Sharma (Chou), Ethan Van Arnam (Clardy), Kyle Vrtis (Walter) , Jason Heustis (curriculum fellow), Mabel Duyao, Laurance Hem & Kristen Parker (Administration) https://bcmp.med.harvard.edu/trainee-committee BCMP Quarterly A Publication of HMS | BCMP Editor in Chief James Kath Boston, MA Compiled by James Kath, Phong Lee, and Thomas Graham https://bcmp.med.harvard.edu/ (C) Copyright 2014 by the President and Fellows of Harvard College Quarterly Summer 2015 Issue Faculty Interview: Professor Andrew Kruse Emily Low and Ethan Van Arnam We sat down with Andrew Kruse, BCMP’s newest faculty member, to chat about his road here and where his laboratory is heading. Where did you get your start in science? I grew up in the suburbs of Minneapolis, and I went to college at the University of Minnesota, mainly because it was close to home and it was cheap. I was interested in quantitative areas of biology, and I joined a structural biology lab during my sophomore year to get hands-on experience in research. I’ve been doing one form or another of structural biology ever since. For graduate school you headed to Stanford to work on G protein-coupled receptors (GPCRs). What drew you to that work? At the time when I was first applying to grad school, I knew that I wanted to do something involving structure and function of proteins important in human health and disease. GPCRs are critical reguAndrew in his temporary office - a dark room. lators of most aspects of human physiology and they’re targets for 30% of marketed therapeutic drugs. And protein conformational change signaling mechanisms, to me, are just really interesting: these receptors are molecular machines and I just think that’s kind of neat. While you were in grad school your advisor, Brian Kobilka, won the Nobel Prize in chemistry. How did you learn the news on the day of the announcement? I actually lived right next to Brian while I was in grad school – a long story. I rented a little cottage behind the house of Brian’s neighbor. On the day he won the prize, I got up and there were all these news vans lining the street. I wondered what was going on – I didn’t know at the time – then I biked to work, and when I got to lab, everything was crazy. What went into your decision to apply to faculty jobs directly out of grad school? It was kind of a combination of things. I didn’t feel like I needed to learn an entirely new field, because I knew I wanted to do receptor structural biology. Also, I felt like I was ready: I had the background that I needed, and I knew that the science that I wanted to do was an extension of work I had been doing as a grad student. With my thesis committee supporting my decision, it seemed like everything fit together. Interview continues inside Issue#1 2015 Department of Biological Chemistry and Molecular Pharmacology Welcome to BCMP! Kruse interview, continued Are you at the bench a lot? I’ve been doing a lot of grant writing this last month, but in general, I try to be there about half the time. Are you eager to let the bench work go? No, actually. With all the grant writing, I appreciate bench work more. Initially, it’s nice to take a little break from running gels and doing some of the more mundane things, but bench work is quickly becoming a more relaxing thing than writing all the time—writing gets to be a bit tedious, fast! Are you liking Boston? Yeah! I mean, it’s a big transition from California, and the weather especially this past winter was pretty intense. My parents are in California, so I still get a chance to go back for the holidays. Do people in your lab call you Andy? I think people mostly call me Andrew. I don’t really care what they call me! As long as I know they’re talking to me, it’s fine. What’s the story behind the paperweight of a GPCR structure sitting on your desk? This is the active β2 adrenergic receptor in complex with the Gs heterotrimer. This is probably the most important structure I was personally involved with during my time in the Kobilka Lab. A postdoc in the lab [Søren Rasmussen] led the project, and I worked on the X-ray data collection, and did the structure refinement together with Bill Weis. When we were solving this structure, we were flying to Chicago basically once a week for data collection. We knew we had the real thing, but we needed to get a complete data set and we wanted to get higher resolution data. It was a very intense time – to get the structure solved, get everything refined, and get it written up and published as quickly as possible. At the time we thought someone else might have had a similar structure, though that turns out not to have been true. Puzzle: Who is this? Can anyone tell us the names of these mystery professors whose portraits are on the second floor of C-building? Answers will be featured in the next BCMP newsletter! 2 Buratowski lab Susana Rodriguez-Navarro joins as a visting professor on sabbatical from the Centro de Investigacion Principe Felipe in Valencia, Spain. Hyun Jin Bae, postdoc, from the Catholic University in Seoul, South Korea. Chou lab Chan Cao, visiting PhD student, from Nankai University in China Coen lab Lei Feng, postdoc, from the Institute of Microbiology at the Chinese Academy of Sciences Gang Li, postdoc, from LSU Health Services Center Shreveport Purba Mukherjee, postdoc, from University at Albany, SUNY Daley lab Deepak Jha, postdoctoral fellow, from UNC Chapel Hill Yu-Chung “Harry” Huang, visiting scientist, from National Yang-Ming University (MD) in Taiwan Areum Han, postdoc, from UCLA Melissa Kinney, postdoc, from Georgia Tech and Emory University Vanessa Lundin, postdoc, from Karolinska Institutet in Sweden Lara Wahlster, postdoc, from Heidelberg University in Germany Ryohichi Sugimura, postdoc, from Osaka University (Japan) and the Stowers Institute Springer lab Bill Ma, postdoc, from University of Wisconsin-Madison Wagner lab Sandeep Chhabra, Research Fellow, from Monash University in Australia Walter lab Ben Stinson, postdoc, from MIT Wong lab Clinton Hansen, postdoc, a graduate of the Harvard Biophysics program from the van Oudenaarden lab Serkan Cabi, postdoc, from MIT Zhao lab Yunneng Tang, postdoc, from the Shanghai Institute for Biochemistry and Cell Biology at the Chinese Academy of Sciences April Watt from the Nolan lab at the University of Oregon joined as a star technician and mouse expert. 11 Issue#1 2015 Department of Biological Chemistry and Molecular Pharmacology Lab Highlights Trainee Spotlight The Daley lab had their annual retreat February 3-5 at the Oliver Lodge resort in Meredith, NH (right). Science was discussed and absolutely no fun was had. Yuan Tian (Springer lab) received a Komen postdoctoral fellowship that will support his work studying bone morphogenetic protein procomplexes and their roles in breast cancer stem cell biology. At the 56th American Society of Hematology meeting in San Francisco last December, Tim Springer received the Henry M. Stratton Medal for his contributions in hematology (below). By Emily Low Describe your science for us. Why did you become a scientist? What’s the coolest thing about being a scientist? In the Chou lab, I study membrane protein structure using NMR spectroscopy. I recently determined the structure of a bacterial transmembrane reductase. This new structure led us to propose a new mechanism in bacterial thiol-redox regulation. It was the last missing piece in this big pathway and I’m pretty excited to get the story out there. I love having an idea, testing it, and then looking back over the results and seeing that my idea was correct (or that it was wrong, but that I’ve learned something else). This can happen in a day, or over the course of years—either way, I find it very satisfying. Also, I’m happiest at the bench. I love executing a well-planned experiment. Oh, and magnets. REALLY big magnets. So cool. Describe your science for us. Walter lab postdoc Kyle Vrtis was awarded- an American Cancer Society postdoctoral fellowship. I work on the biochemistry of cell division, and specifically, I work on chromosome biology. I’m interested in how cohesin knows to go to centromeres, and so I’d like to understand the proteins that participate in this localization pathway. We made a nice advance when we were able to determine the structure of a complex that actually loads cohesin onto chromosomes, and that told us a lot about how the regulation works. Lauren Thorpe in the Zhao lab defended her thesis on the role of the PI3K regulatory subunits in cancer using mouse models. Congratulations, Dr. Thorpe! Melissa Leger-Abraham, a postdoc in the Wagner lab, was promoted to Instructor. For those of you who read the last issue’s Trainee Spotlight of Jacob Sargent (Loparo lab), he won his Belt Buckle Run competition. The final challenge was to continuously run 20 minutes, every hour, for as long as possible. As the Grand Champion, Jacob took the prize (right) by running roughly 80 miles over 48 hours. 10 Stephen Hinshaw, Harrison Lab Why did you become a scientist? What’s the coolest thing about being a scientist? Since I was little, I’ve enjoyed solving puzzles. The coolest thing about science in general is Jessica Williamson, Ph.D., Chou lab If you could ask any scientist, alive or dead, one single question, who would you ask and what would the question be? I’d rather ask every single scientist, “Can you explain your work to anyone, any age, any background, so that they could understand it?” I think demystifying current science in the general population could go a long way toward supporting scientific growth in society. Also, we have Neil deGrasse Tyson and Bill Nye…but where is our supercool woman of science superstar? Let’s get our diverse voices out there! what those puzzles end up to be. I enjoy, I think like all of us, making discoveries. If you weren’t a scientist, what would you be? I like baseball. I don’t think I’m good enough to be a baseball player—although I played when I was young—but maybe I’d be a baseball writer, or maybe an announcer. Announcers get to travel with the team, and they have to know all of these facts about all these old games that happened…so that’d be fun. 3 Issue#1 2015 Department of Biological Chemistry and Molecular Pharmacology Word on the Street By Elissa Hobert and Jess Williamson Q: If you were not a scientist in BCMP, what would your job be? Farewells Buratowski lab postdoc Sebastian Marquardt is now an Assistant Professor at the University of Copenhagen. Jessica Williamson (Chou lab) has joined Beryllium (Bedford, MA) as a research scientist. Tanxing Cui (Chou lab) is now Senior Development Scientist at Scientific Protein Laboratories. Degree in hand, Jacob Sargent (Loparo lab) is returning to the field of education. Adem Koksal (Springer lab) joned MedImmune in Gaithersburg, MD as a research scientist. Pontus Nordenfelt (Springer lab) is establishing his lab at Lund University in Sweden. Jianghai Zhu (Springer lab) is now a senior scientist at the Advanced Biomedical Computing Center at Frederick National Laboratory for Cancer Research “Brew master” James Kath, Loparo Lab “Novelist” Seung-Joo Lee, Richardson lab “Writer for WB TV shows” Joe Loparo “Baker” Jyoti Dev, Chou lab After earning her PhD, Shuai Li (Wagner lab) joined IBM in Armonk, NY. Wagner lab visiting postdoc Xinjing (Sid) Jia returned to University of Queensland in Australia. The Zhao lab said goodbye to technician Mayuko Segawa. Milestones Samir Sharma (right), the son of Mukesh Sharma (Chou lab), arrived on March 13. Peng Du (Gregory lab) and his wife Lijuan announced the birth of their son, Andy Du, on November 24. “Writer” Purba Mukherjee, Coen lab “Dive master” “Full-time bird watcher” Ethan van Arnam, Clardy lab Emily Mevers Clardy Lab “Gas station attendant” Kevin McCarthy, Harrison lab On December 14, Lizz Thrall and her wife Giselle welcomed their son, Henry “Hank” Worthy Schuetz-Thrall, shown below in an onesie designed by the Loparo lab at their baby shower. Julien Duxin (Walter lab) and his wife Fernanda announced the birth of his son Felix on November 1. “Wall street stock broker” Donald Raymond, Harrison Lab 4 Shunsuke Imai (Wagner lab) and his wife Chifumi were joined by their daughter Reika on December 18. “Jedi Knight” Thomas Graham, Loparo/Walter labs “Singer” Yujin Chun Buratowski lab “Chemist or engineer” Andrew Kruse Mahmoud Nasr (Wagner lab), his wife Marwa Sabe and daughter Yasmine welcomed another daughter, Amina on December 27. 9 Issue#1 2015 Department of Biological Chemistry and Molecular Pharmacology Career resources Wagner lab, cont. The majority of biomedical PhDs pursue non-academic or non-tenure track science-related careers.* Harvard and the Greater Boston area offers a variety of resources to explore your options. Akabayov SR, Akabayov B, Wagner G. Human translation initiation factor eIF4G1 possesses a low-affini-ty ATP binding site facing the ATP-binding cleft of eIF4A in the eIF4G/eIF4A complex. Biochemistry (2014) 21, 6422-6425. Elter S, Raschle T, Arens S, Viegas A, Gelev V, Etzkorn M, Wagner G. The use of amphipols for NMR structural characterization of 7-TM proteins. J Membr Biol (2014) 247, 957-964. Ivanov P, O’Day E, Emara MM, Wagner G, Lieberman J, Anderson P. G-quadruplex structures contribute to the neuroprotective effects of angiogenin-induced tRNA fragments. Proc Natl Acad Sci USA (2014) 111, 18201-18206. Kaptein R, Wagner G. NMR studies of membrane proteins. J Biomol NMR (2015) 61, 181-184. Walter lab Zhang J, Dewar JM, Budzowska M, Motnenko A, Cohn MA, Walter JC. DNA interstrand cross-link repair requires replication-fork convergence. Nat Struct Mol Biol (2015) 22, 242-247. Wong lab Koussa MA, Halvorsen K, Ward A, Wong WP. DNA Nanoswitches: A quantitative platform for gel-based biomolecular interaction analysis. Nat Methods (2015), 12, 123-126. Zhao lab Thorpe LM, Yuzugullu H, Zhao JJ. PI3K in cancer: divergent roles of isoforms, modes of activation and therapeutic targeting. Nat Rev Cancer (2015) 15: 7-2. Career guidance for academic and non-academic jobs Office of Career Services (for students) http://www.ocs.fas.harvard.edu/students.htm Events: Info events, consultation for resume writing and interviews, connection to Harvard alumni networks Trapped! A harrowing true story of terror and survival! Seven members of the Clardy lab became stranded in one of the C building elevators on April 21st. They were leaving the lab to get ice cream in the middle of a work day. The stranded individuals were able to communicate with the outside world through a small crack between the elevator doors and they remained in positive spirits while facilities maintenance staff worked to free them. Professor Jon Clardy oversaw the "rescue" effort and offered to feed the stranded individuals leftover Happy Hour candy through the crack in the door, though this offer was declined. The maintenance staff successfully dislodged the jammed doors and the lab members were freed after approximately 20 minutes of captivity. The elevator was returned to service the next day and has functioned without incident since. Office of Postdoctoral Fellows http://postdoc.hms.harvard.edu/ Events: Workshops, career panels, office hours for consultation Harvard clubs (see links for listserv access) Harvard Biotech Club http://thebiotechclub.org Events: Career fair (9/5/15), journal club every other week Harvard Graduate Business Club http://harvardgraduatebusinessclub.com/ Events: Mini-MBA program (every summer), monthly business journal club, finance workshops, entrepreneurship and career development events Harvard Consulting Club http://www.harvardgraduateconsultingclub.com/ Events: Consulting Career Fair (06/24/2015), MIT vs. Harvard Case Competition (8/17/15), weekly case/interview practice sessions, consulting workshops, panel discussion with consultants, networking events, information sessions with representatives from different firms GSAS Science Policy Path http://projects.iq.harvard.edu/sciencepolicy/home Events: Faculty chats, yearly DC trip in the spring (preference toward graduate students) DMS PATHS https://www.hms.harvard.edu/dms/resources/paths.html Individual clubs available to students, focusing on non-tenure track careers: Biotechnology, Consulting, Education, Law, Policy and Non-Profit, Science Writing; resources potentially available to start new clubs Boston area organizations Massachusetts Biotechnology Council http://www.massbio.org/ Some events and resources may require membership, which may be available to those at HMS/hospitals Massachusetts Association for Women in Science http://mass-awis.org/ 8 Biotech Tuesday https://biotechtuesday.com/ * http://ascb.org/where-will-a-biology-phd-take-you/ 5 BCMP In Press Issue#1 2015 Chou lab Sounier R, Bellot G, Chou JJ. Mapping conformational heterogeneity of mitochondrial nucleotidetransporter in uninhibited states. Angew Chem Int Ed Engl (2015) 54, 2436-2441. Dev J, Brüschweiler S, Ouyang B, Chou JJ. Transverse relaxation dispersion of the p7 membrane channel from hepatitis C virus reveals conformational breathing. J Biomol NMR (2015) 61, 369-378. Kalita MM, Griffin S, Chou JJ, Fischer WB. Genotype-specific differences in structural features of hepatitis C virus (HCV) p7 membrane protein. Biochim Biophys Acta (2015) 1848 1383-1392. Coen lab Bender BJ, Coen DM, Strang, BL. Dynamic and nucleolin-dependent localization of human cytomegalovirus UL84 to the periphery of viral replication compartments and nucleoli. J Virol (2014) 88, 11738-11747. Chan H, Beardsley GP, Coen DM. Mechanism of ganciclovir-induced chain termination revealed by resistant viral polymerase mutants with reduced exonuclease activity. Proc Natl Acad Sci USA (2014) 111, 17462-17467. Sharma M, Bender BJ, Kamil JP, Lye MF, Pesola JM, Reim NI, Hogle JM, Coen DM. Human cytomegalovirus UL97 phosphorylates the viral nuclear egress complex. J Virol (2015) 89, 523-534. Daley lab Cahan P, Morris SA, Collins JJ, Daley GQ. Defining cellular identity through network biology. Cell Cycle (2014) 13, 3313-3314. Unternaehrer JJ, Zhao R, Kim K, Cesana M, Powers JT, Ratanasirintrawoot S, Onder T, Shibue T, Weinberg RA, Daley GQ. The epithelial-mesenchymal transition factor Snail paradoxically enhances reprogramming. Stem Cell Reports (2014) 11, 691-698. 6 Zhao R, Deibler RW, Lerou PH, Ballabeni A, Heffner GC, Cahan P, Unternaehrer JJ, Kirschner MW, Daley GQ. A non-transcriptional role for Oct4 in the regulation of mitotic entry. Proc Natl Acad Sci U S A (2014) 111, 15768-15773. Schlaeger TM, Daheron L, Brickler TR, Entwisle S, Chan K, Cianci A, DeVine A, Ettenger A, Fitzgerald K, Godfrey M, Gupta D, McPherson J, Malwadkar P, Gupta M, Bell B, Doi A, Jung N, Li X, Lynes MS, Brookes E, Cherry AB, Demirbas D, Tsankov AM, Zon LI, Rubin LL, Feinberg AP, Meissner A, Cowan CA, Daley GQ. A comparison of reprogramming methods. Nat Biotechnol (2014) 33, 58-63. Kumar RM, Cahan P, Shalek A, Satija R, DaleyKeyser A, Li H, Zhang J, Pardee K, Gennert D, Trombetta JJ, Ferrante TC, Regev A, Daley GQ, Collins JJ. Deconstructing the dynamic transcriptional program of pluripotent stem cells. Nature (2014) 516, 56-61. Cahan P, Morris SA, Collins JJ, Daley GQ. Defining cellular identity through network biology. Cell Cycle (2014) 13, 3313-3314. Kumar RM, Cahan P, Shalek AK, Satija R, DaleyKeyser AJ, Li H, Zhang J, Pardee K, Gennert D, Trombetta JJ, Ferrante TC, Regev A, Daley GQ, Collins JJ. Deconstructing transcriptional heterogeneity in pluripotent stem cells. Nature (2014) 4, 56-61. Kim PG, Nakano H, Das PP, Chen MJ, Rowe RG, Chou SS, Ross SJ, Sakamoto KM, Zon LI, Schlaeger TM, Orkin SH, Nakano A, Daley GQ. Flow-induced protein kinase A-CREB pathway acts via BMP signaling to promote HSC emergence. J Exp Med (2015) 212, 633-648. Diaz MF, Li N, Lee HJ, Adamo L, Evans SM, Willey HE, Arora N, Torisawa YS, Vickers DA, Morris SA, Naveiras O, Murthy SK, Ingber DE, Daley GQ, García-Cardeña G, Wenzel PL. Biomechanical forces promote blood development through prostaglandin E2 and the cAMP-PKA signaling axis. J Exp Med (2015) 212, 665-680. Mi L, Brown CT, Gao Y, Tian Y, Le VQ, Walz T, Springer TA. Structure of bone morphogenetic protein 9 proVo LT, Daley GQ. De novo generation of HSCs from complex. Proc Natl Acad Sci USA (2015), 112, somatic and pluripotent stem cell sources. Blood- 3710-3715. (2015) 125, 2641-2648. Daley lab, cont. Kim J, Hudson NE, Springer TA. Force-induced Shyh-Chang N, Daley GQ. Metabolic switches on-rate switching and modulation by mutations in linked to pluripotency and embryonic stem cell gain-of-function von Willebrand diseases. Proc Natl differentiation. Cell Metab (2015) 21, 349-350. Acad Sci USA (2015), 112, 4648-4653. Wang LD, Rao TN, Rowe RG, Nguyen PT, Sullivan Roberts lab JL, Pearson DS, Doulatov S, Wu L, Lindsley RC, Zhu H, DeAngelo DJ, Daley GQ, Wagers AJ. Leukemia Hwang JH, Pores Fernando AT, Faure N, Andrabi S, Hahn WC, Schaffhausen BS, Roberts TM. Polyomavi(2015) Feb 6. doi: 10.1038/leu.2015.19. rus small T antigen interacts with yes-associated proJang IH, Lu YF, Zhao L, Wenzel PL, Kume T, Datta tein to regulate cell survival and differentiation. J Virol SM, Arora N, Guiu J, Lagha M, Kim PG, Do EK, Kim (2014) 88, 12055-12064. JH, Schlaeger TM, Zon LI, Bigas A, Burns CE, Daley GQ. Notch1 acts via Foxc2 to promote definitive Csibi A, Lee G, Yoon SO, Tong H, Ilter D, Elia I, Fendt hematopoiesis via effects on hemogenic endotheli- SM, Roberts TM, Blenis J. The mTORC1/S6K1 pathway regulates glutamine metabolism through the um. Blood (2015) 125, 1418-1426. eIF4B-dependent control of c-Myc translation. Curr Schlaeger TM, Daheron L, Brickler TR, Entwisle S, Biol (2014) 24, 2274-2280. Chan K, Cianci A, DeVine A, Ettenger A, Fitzgerald K, Godfrey M, Gupta D, McPherson J, Malwadkar P, White EA, Kramer RE, Hwang JH, Pores Fernando AT, Gupta M, Bell B, Doi A, Jung N, Li X, Lynes MS, Naetar N, Hahn WC, Roberts TM, Schaffhausen BS, Brookes E, Cherry AB, Demirbas D, Tsankov AM, Livingston DM, Howley PM. Papillomavirus E7 oncopZon LI, Rubin LL, Feinberg AP, Meissner A, Cowan roteins share functions with polyomavirus small T CA, Daley GQ. A comparison of non-integrating antigens. J Viol (2015) 89, 2857-2865, reprogramming methods. Nat Biotechnol (2015) Wagner lab 33, 58-63. Takeuchi K, Sun ZY, Li S, Gal M, Wagner G. NMR resoLoparo lab nance assignments of the catalytic domain of human Song D, Loparo JJ. Building bridges within the bac- serine/threonine phosphatase calcineurin in unligated terial chromosome. Trends Gen (2015), 31, 164-173. and PVIVIT-peptide-bound states. Biomol NMR Assign (2015) 9, 201-205. Springer lab Edmonds KA, Wagner G. (1)H, (13)C, and (15)N backDong X, Hudson NE, Lu C, Springer TA. Structural bone and sidechain chemical shift assignments for the determinants of integrin β-subunit specificity for HEAT2 domain of human eIF4GI. Biomol NMR latent TGF-β. Nat Struct Mol Biol (2014), 21, Assign (2015) 9,157-60. 1091-1096. Hagn F, Wagner G. Structure refinement and memXia W, Springer TA. Metal ion and ligand binding of brane positioning of selectively labeled OmpX in phosintegrin α5β1. Proc Natl Acad Sci USA (2014), 111, pholipid nanodiscs. J Biomol NMR (2014) 61, 17863-17868. 249-260. 7