Nutrition Science and Everyday Application - beta v 0.1

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PROTEIN STRUCTURE 313 A YouTube element has been excluded from this version of the text. You can view it online here: https://openoregon.pressbooks.pub/ nutritionscience/?p=459 VIDEO: “mRNA Translation,” DNA Learning Center, YouTube (March 22, 2010), 2:04 minutes. PROTEIN ORGANIZATION Protein’s structure enables it to perform a variety of functions. There are four different structural levels of proteins (Figure 6.6.): 1. Primary structure – This is the one-dimensional polypeptide chain of amino acids, held together by peptide bonds. 2. Secondary structure – The polypeptide chain folds into simple coils (also called helices) <strong>and</strong> sheets, determined by the chemical interactions between amino acids.
314 ALICE CALLAHAN, PHD, HEATHER LEONARD, MED, RDN, AND TAMBERLY POWELL, MS, RDN 3. Tertiary structure – This is the unique three-dimensional shape of a protein, formed as the different side chains of amino acids chemically interact, either repelling or attracting each other. Thus, the sequence of amino acids in a protein directs the protein to fold into a specific, organized shape. 4. Quaternary structure – In some proteins, multiple folded polypeptides called subunits combine to make one larger functional protein. This is called quaternary protein structure. The protein hemoglobin is an example of a protein that has quaternary structure. It is composed of four polypeptides that bond together to form a functional oxygen carrier.
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Nutrition: Science and Everyday App
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Nutrition: Science and Everyday App
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UNIT 3 - MOLECULES OF LIFE: PHOTOSY
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UNIT 9 - VITAMINS AND MINERALS PART
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2 ALICE CALLAHAN, PHD, HEATHER LEON
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About the Authors ALICE CALLAHAN, P
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6 ALICE CALLAHAN, PHD, HEATHER LEON
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Updates Made to OER Date Unit Page
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Introduction to Designing a Healthy
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12 ALICE CALLAHAN, PHD, HEATHER LEO
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Classification of Nutrients Food is
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Introduction to Nutrition Science a
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The Scientific Method Similar to th
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Types of Research Studies and How T
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100 ALICE CALLAHAN, PHD, HEATHER LE
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Finding Accurate Sources of Nutriti
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Who Can You Trust for Nutrition Inf
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UNIT 3 - MOLECULES OF LIFE: PHOTOSY
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Photosynthesis and Metabolism As we
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The Digestive System We just learne
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Introduction to Carbohydrates If so
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Digestion and Absorption of Carbohy
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Glucose Regulation and Utilization
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Sugar: Food Sources, Health Implica
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UNIT 5- LIPIDS 246
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The Functions of Fats Fats serve us
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Lipid Types and Structures Lipids a
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Introduction to Energy Balance On D
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Energy Balance: Energy In, Energy O
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Indicators of Health: BMI, Body Com
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Best Practices For Weight Managemen
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UNIT 8 - VITAMINS AND MINERALS PART
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Dietary Supplements By now you know
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Vitamins and Minerals Involved In F
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Vitamins Important for Vision Visio
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Introduction to Vitamins and Minera
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Introduction to Bone Health The hum
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Calcium: Critical for Bones and Thr
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Vitamin D: Important to Bone Health
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Vitamins and Minerals Involved in B
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Introduction to Nutrition and Physi
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UNIT 11 — NUTRITION THROUGHOUT TH
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Nutrition in Early Infancy Infancy
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Raising Healthy Eaters “Raising a
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