{"id":28,"date":"2019-09-03T18:29:50","date_gmt":"2019-09-03T18:29:50","guid":{"rendered":"https:\/\/www.thermofisher.com\/blog\/ask-a-scientist\/?p=28"},"modified":"2020-12-29T18:28:48","modified_gmt":"2020-12-29T18:28:48","slug":"what-is-molecular-biology","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/ask-a-scientist\/what-is-molecular-biology\/","title":{"rendered":"What is Molecular Biology?"},"content":{"rendered":"<p><img decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" src=\"http:\/\/www.thermofisher.com\/blog\/ask-a-scientist\/wp-content\/uploads\/sites\/15\/2019\/09\/what20is20molecular20biology_20_2_-4.png\" \/><\/p>\n<p><a href=\"https:\/\/www.thermofisher.com\/us\/en\/home\/brands\/thermo-scientific\/molecular-biology.html?cid=corp_ask-a-scientist_blog_0919\" target=\"_blank\" rel=\"noopener noreferrer\">Molecular biology<\/a> is the branch of biology that studies the molecular basis of biological activity.<\/p>\n<p>Living things are made of chemicals just as non-living things are, so a molecular biologist studies how molecules interact with one another in living organisms to perform\u00a0the functions of life.<\/p>\n<p>Molecular biologists conduct experiments to investigate the structure, function, processing, regulation and evolution of biological molecules and their interactions<br \/>\nwith one another &#8212; providing micro-level insights into how life works.<\/p>\n<p>Although there are many kinds of molecules in every living thing, most molecular biologists focus on genes and proteins. Proteins perform a huge diversity of functions within living cells and genes contain the information required to make more proteins.<\/p>\n<h2>The Complex Relationship of Genes &amp; Proteins<\/h2>\n<p>Genes are segments of information stored on gigantic nucleic acid molecules and proteins are molecules in their own right, making both of these substances (and the relationship between them), extraordinarily important to study.<\/p>\n<p>Molecular biologists work to identify and understand the parts of biological pathways. Proteins can:<\/p>\n<ul>\n<li>Regulate and impact each other<\/li>\n<li>Respond to signals from genes<\/li>\n<li>Respond to signals from outside a cell<\/li>\n<\/ul>\n<p>The long chain of these interactions is what many molecular biologists seek to fully document.\u00a0Every step in a functional pathway is something that a disease can disrupt or a drug can target.\u00a0 Understanding the role of each such molecule is important for understanding more complex aspects of how organisms live and work.<\/p>\n<p>Molecular biologists can also seek to understand ways the structure of a molecule, including details such as the location and shape of active sites on a protein, affect how a molecule functions. Collecting this information not only provides basic knowledge into how biology works, but helps inform the efforts of other scientists who seek to manipulate that biology. Those scientists include drug designers and genetic engineers.<\/p>\n<h2>The Differences in Molecular Biology, Biochemistry &amp; Genetics<\/h2>\n<p>Molecular biology has much in common with two related sciences: biochemistry and genetics. The three sciences all concern themselves with details of how organisms work at the molecular level. However, each focuses on a different area and have different applications.<\/p>\n<h3>Biochemistry<\/h3>\n<p>Biochemistry often devotes more of its attention to molecules other than proteins. It also focuses on nucleic acids and to chemical effects that happen when larger quantities of a substance are present, such as the effects of venoms. Additionally, biochemistry uses many methods based in organic chemistry research.<\/p>\n<h3>Genetics<\/h3>\n<p>Genetics is focused specifically on heritable traits and how changes in the genetic code affect an organism. This focus on heritability means that genetics is often best studied at the population level, making it a much larger-scale sort of field than molecular biology.<\/p>\n<p>Each of these three fields overlap and influence the others. Genetics, in particular, has shared much with molecular biology, particularly with regards to the role of RNA. RNA can both store information like DNA and perform active functions like a protein.<\/p>\n<h2>Molecular Biology Laboratory Methods<\/h2>\n<p>Molecular biology is perhaps most famous for its distinctive suite of laboratory methods. Molecular biologists make extensive use of:<\/p>\n<ul>\n<li><strong>Molecular cloning<\/strong><\/li>\n<li><strong>Polymerase <\/strong><\/li>\n<li><strong>Chain reaction<\/strong><\/li>\n<li><strong>Gel electrophoresis<\/strong><\/li>\n<li><strong>Blotting<\/strong><\/li>\n<\/ul>\n<p>These techniques facilitate collecting, isolating and quantifying molecules of interest.<\/p>\n<p>Studying protein and nucleic acid structure benefits from a different set of techniques, such as <strong>X-ray crystallography<\/strong>. Many molecular biologists make extensive use of computer modeling in their work.\u00a0 Modern techniques, particularly those developed for genetics, are also altering the course of molecular biology research.<\/p>\n<p>Molecular biology is a large and growing field, whose importance has yet to be fully realized. Many more advances in medicine, ecology and other areas will come out of molecular biology research as this science continues to grow and advance.<\/p>\n<p><strong>Interested in learning more about molecular biology? Visit our <a href=\"https:\/\/www.thermofisher.com\/us\/en\/home\/brands\/thermo-scientific\/molecular-biology\/molecular-biology-learning-center\/molecular-biology-resource-library.html?cid=corp_ask-a-scientist_blog_0919\">molecular biology resource center<\/a> where you can access on-demand webinars, videos, articles and more.\u00a0<\/strong><\/p>\n<p><a href=\"https:\/\/www.thermofisher.com\/us\/en\/home\/brands\/thermo-scientific\/molecular-biology\/molecular-biology-learning-center\/molecular-biology-resource-library.html?cid=corp_ask-a-scientist_blog_0919\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" style=\"vertical-align: middle;margin-left: auto;margin-right: auto\" title=\"Molecular Biology Resource Center CTA\" src=\"http:\/\/www.thermofisher.com\/blog\/ask-a-scientist\/wp-content\/uploads\/sites\/15\/2019\/09\/molecular20biology20resource20center20cta20_1_-4.jpg\" alt=\"Molecular biology resource center\" width=\"560\" height=\"315\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Molecular biology is the branch of biology that studies the molecular basis of biological activity. Living things are made of chemicals just as non-living things are, so a molecular biologist studies how molecules interact with one another in living organisms to perform\u00a0the functions of life. Molecular biologists conduct experiments to investigate the structure, function, processing,<\/p>\n","protected":false},"author":1059,"featured_media":44,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[3],"tags":[7],"division":[],"class_list":{"0":"post-28","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-life-sciences","8":"tag-molecular-biology","9":"entry"},"_selected_authors":"","_selected_reviewers":"","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What is Molecular Biology? | Thermo Fisher Scientific<\/title>\n<meta name=\"description\" content=\"Molecular biology studies how molecules interact with one another in living organisms to perform functions of life. 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