{"id":61,"date":"2020-10-26T01:51:33","date_gmt":"2020-10-26T06:51:33","guid":{"rendered":"https:\/\/college.agrilife.org\/wandlab\/?page_id=61"},"modified":"2025-10-21T14:49:55","modified_gmt":"2025-10-21T19:49:55","slug":"publications","status":"publish","type":"page","link":"https:\/\/college.agrilife.org\/wandlab\/research\/publications\/","title":{"rendered":"Publications"},"content":{"rendered":"\n<p class=\"text\"><strong>Protein Dynamics<\/strong><br \/>Our efforts in protein dynamics center on the use of high-resolution liquid and solid state NMR spectroscopy to characterize the nature of protein motion and its influence on function. Historically, we have focused on the very fast internal motions that are naturally characterized by classical NMR relaxation phenomena. This has required the development of novel isotopic labeling and multidimensional sampling methods and a variety of analytical strategies. NMR is perhaps the most ideal experimental technique for obtaining comprehensive site resolved (i.e. at atomic resolution) information. NMR relaxation studies have revealed that the internal dynamics of proteins are surprisingly rich. We have discovered that motion on the side chains is generally much more varied than on the backbone. We are currently interested in understanding the physical origins and biological significance of these motions. A critical product of these studies is the quantitative interpretation of changes in motion as changes in conformational entropy, a previously experimentally inaccessible quantity.<\/p>\n\n\n\n<p class=\"text\">For more detailed information&nbsp;<a href=\"https:\/\/college.agrilife.org\/wandlab\/protein-dynamics\/\">click here<\/a>.<\/p>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<p class=\"text\"><strong>Protein Interactions<\/strong><br \/>The interaction of proteins with other macromolecules and small ligands is central to biology. We are attempting to understand the thermodynamic origins of high affinity interactions with a particular goal of filling in a missing piece of the puzzle that is the free energy of binding. Historically, the presence of protein conformational entropy or its role in contributing to the free energy of protein interactions has often been ignored. This is most likely due to the difficulty in measuring conformational entropy. We believe that protein conformational entropy is in fact significant and, most importantly, is a variable quantity. Over the past decade, we have developed a &#8220;dynamical proxy&#8221; for conformational entropy with the goal of experimentally measuring its variation during changes in protein functional states. We have largely concentrated on high affinity interactions involving proteins with other proteins or small molecules ligands such as drugs.<\/p>\n\n\n\n<p class=\"text\">For more detailed information&nbsp;<a href=\"https:\/\/college.agrilife.org\/wandlab\/protein-interactions\/\">click here<\/a>.<\/p>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<p class=\"text\"><strong>Structural Biology<\/strong><br \/>Our main focus in structural biology is the use of reverse micelle encapsulation to overcome many of the problems presented by large and otherwise difficult proteins to the methods of high resolution liquid NMR spectroscopy. Originally, conceived to overcome the slow tumbling problem presented by large soluble proteins we have more recently been using the basic approach to characterize the structures of integral and anchored membrane proteins. Currently, we are using protein encapsulation to study the structure-function relationships for the myristoylated proteins recoverin and the HIV matrix protein. Reverse micelle encapsulation has proven to provide tremendous advantages when using solution NMR methods to detect protein-water interactions. We are using this strategy to characterize protein hydration in a variety of contexts.<\/p>\n\n\n\n<p class=\"text\">For more detailed information,&nbsp;<a href=\"https:\/\/college.agrilife.org\/wandlab\/structural-biology\/\">click here<\/a>.<\/p>\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n<p class=\"text\"><strong>NMR Methods<\/strong><br \/>We continue our efforts to expand the capabilities of reverse micelle encapsulation for enabling high resolution solution NMR studies of proteins that resist more conventional approaches. Originally, developed the overcome the slow tumbling problem presented by large soluble proteins, it has turned out that the approach is useful in a variety of contexts including integral and anchored membrane proteins, protein hydration &amp; dynamics, and the effects of confinement on protein stability, folding, dynamics, and function. We have had a long-standing interest in the application of high pressure NMR to studies in protein biophysics and the recently developed generation of apparatus now allows state-of-the-art NMR at 3.0 kbar (45,000 psi). Finally, we have recently become interested in sparse sampling methods and have recently focused on non-uniform sampling strategies as a means for both rapid data collection and enhanced S\/N.<\/p>\n\n\n\n<p class=\"text\">An exciting new application of solutions of reverse micelles is their apparent ability to assist in overcoming the implementation of dynamic nuclear polarization of biopolymers in solution.<\/p>\n\n\n\n<p class=\"text\">For more detailed information,&nbsp;<a href=\"https:\/\/college.agrilife.org\/wandlab\/nmr-methods-development\/\">click here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Protein DynamicsOur efforts in protein dynamics center on the use of high-resolution liquid and solid state NMR spectroscopy to characterize the nature of protein motion and its influence on function. Historically, we have focused on the very fast internal motions that are naturally characterized by classical NMR relaxation phenomena. This has required the development of [&hellip;]<\/p>\n","protected":false},"author":489,"featured_media":0,"parent":23,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-61","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Publications - Wand Lab<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/college.agrilife.org\/wandlab\/research\/publications\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Publications - Wand Lab\" \/>\n<meta property=\"og:description\" content=\"Protein DynamicsOur efforts in protein dynamics center on the use of high-resolution liquid and solid state NMR spectroscopy to characterize the nature of protein motion and its influence on function. 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