Premium Essay

M1 Fibrous Proteins

Submitted By
Words 771
Pages 4
M1- Fibrous and globular proteins
Fibrous proteins-
Fibrous proteins tend to form long chains that always run parallel to each other. These chains are linked by disulphide cross bridges. It forms long fibres or sheets. This makes the proteins very stable and strong. They have little to no tertiary structure. They are also usually insoluble in water.
Structural functions
Fibrous proteins have structural functions, these functions typically include keratin in skin and hair. An example of a fibrous protein is collagen. Collagen is found in bone, cartilage, tendons and ligaments. This gives them tensile strength. It is a very abundant protein in animals and is also found in many diverse organisms and organs. In humans it is found in tendons, the …show more content…
It is a large, asymmetric molecule, and has one long tail as well as two globular heads. If dissociated, it will dissociate into six polypeptide chains.
Two of them are heavy chains which are wrapped around each other to form a double helical structure, and the other four are light chains. One main characteristic of myosin is its ability to bind very specifically with actin. When myosin and actin are combined together, that makes the muscle produce force.
Proteins which have a 3D structure, tend to fall into two main groups, these are;
Globular – globular proteins, form ball-like structures where hydrophobic parts are towards the centre and hydrophilic are towards the edges, these make them water …show more content…
These are insoluble in water. Fibrous protein roles in the body include; collagen in bone and cartilage, Keratin in fingernails and hair.
Haemoglobin
Haemoglobin is a water soluble globular protein which is composed of two α polypeptide chains, two β polypeptide chains and an inorganic prosthetic haem group. Its function is to carry oxygen around in the blood, and it is facilitated in doing so by the presence of the haem group which contains a Fe2+ ion, onto which the oxygen molecules can bind.
Each polypeptide chain contains a haem group. A haem group is a prosthetic group and when combined with 4 polypeptide chains it forms a conjugated protein. The haem group has and iron ion in the centre. The iron combines with oxygen at high oxygen concentrations and releases oxygen at low oxygen concentrations. One haemoglobin molecule can carry 4 oxygen molecules.
Enzymes
Enzymes are biological catalysts, catalysts are substances that increase the rate of chemical reactions without being used up. Enzymes are also proteins that are folded into complex shapes that allow smaller molecules to fit into them. The place where these substrate molecules fit is called the active

Similar Documents

Premium Essay

Miss

...Unit 4: Development through the life stages Unit 4: Development through the life stages Name: Fatimah Al_Asadi Teacher name: Ms John What is this unit about? This unit enables learners to gain understanding of the different life stages and how people grow and develop. It requires learners to reflect on the importance of a variety of factors and major life events on the development of individuals, and to consider the nature-nurture debate. This unit will also allow learners to gain an insight into the aging process and to understand both positive and negative perspectives of ageing. Learning outcomes: * Understand human growth and development through the life stages. * Understand how life factors and events may influence the development of the individual. * Understand physical changes and psychological perspectives in relation to ageing. P1: Describe the physical, intellectual, emotional and social development through the life stages. The main life stages of human development are: * Conception * Pregnancy and birth. * Infancy * Childhood * Adolescence * Adulthood * Later adulthood. The holistic development of an individual involves them developing physically, intellectually, emotionally and socially. All humans go through the following things: * Growth: an increase in some measured quantity, such as height or weight. * Development: complex changes including an increase in skills...

Words: 10187 - Pages: 41

Premium Essay

Cell Development

...Plasma membrane: The plasma membrane controls how substances move in and out of the cell. The cell membrane contains phospholipids, proteins and carbohydrates. These are arranged in a fluid mosaic structure. Cytoplasm: The cytoplasm is everything that is outside the nucleus and inside of the cell membrane. The fibre network helps maintain its shape and gives it support. Nucleus: Nucleus contains the DNA and is like a brain Ribosome: Ribosomes contain and give out the protein. They connect to each other to build a long chain. Endoplasmic reticulum: Endoplasmic reticulum is the network that is inside the cytoplasm of cells involved in transporting things to and from the cell. Mitochondria: Mitochondria convert energy into different forms that the cells can use. Mitochondria’s are found in the cytoplasm. Centrosome: Centrosomes are found near the nucleus in most cells. They consist of centriole which is surrounded by a centrosphere. The two parts move to opposite poles. This then divides the cell. The information I got my definitions from are http://www.cellsalive.com/ & http://www.williamsclass.com/SeventhScienceWork/CellTheoryParts.htm and http://www.biologyjunction.com/cell_functions.htm Epithelial tissue is one of four types of tissues in a body. Epithelial makes up many parts of the body. For example the skin, it also lines the inside of the body and cavities. Epithelial tissue can be divided up into two basic types. The first type is the...

Words: 3867 - Pages: 16

Premium Essay

Nursing

...(Provide reference listing using APA format) Reference List Criteria for Case Study I. Introduction – purpose of paper A. Significance B. Objectives II. Assessment a. Include date of admission; date of care; allergies; history b. Address and list analysis of Gordon’s Functional Patterns (list all 11). Integrate treatments, meds, nursing implications, and related assessments in paper. Includes nutritional analysis. III. Literature Review (at least three resources at least one professional journal) a. Disease Description b. Diagnostic Confirmation c. Signs & Symptoms (textbook vs. patient’s actual symptoms being experienced) d. Treatment and Rationale e. Disease Outcome Expectations f. Rehab needs g. Related to client situation IV. Nursing Plan of Care a. Problems Prioritized (list 3 diagnosis) b. Actual Diagnosis c. Potential Diagnosis d. Outcome e. Goals (short and long term) f. Actions/actual diagnosis g. Actions/potential diagnosis h. Rationales (resources documented) i. Evaluation/Revision V. Discharge Planning a. Resources for coping b. Knowledge/Teaching c. Referrals/Continuing Care VI. Summary VII. Format a. Length of paper should be - between 15-20 pages typed b. APA format c. Cover page, reference page, etc… d. Grammar, punctuation, sentence structure, etc… Faculty Signature_______________________________________________ Date________________________________ Name__________________________ Semester______________________ |Criteria...

Words: 6696 - Pages: 27

Premium Essay

Unit 5 Anatomy and Phisiology

...Unit 5: Anatomy and Physiology for Health and Social Care. Name: Fatimah Al_Asadi Teacher name: Miss Bull Name: Fatimah Al_Asadi Teacher name: Miss Bull Aim and purpose This unit aims to enable learners to understand aspects of the anatomy and physiology of human body systems. Learners will be able to gain an overview of the organisation of the human body before looking at how body systems work together to provide energy for the body. Learners will have the opportunity to investigate how homeostatic mechanisms operate in the body. Unit introduction This unit introduces core knowledge of cellular structure and function, and the organisation of the body as a whole, and then builds on this to develop a more detailed knowledge of the fine anatomy and physiology of the systems involved in energy metabolism. Learners will examine the homeostatic mechanisms involved in regulating these systems to maintain health. Learners will be given the opportunity to undertake practical activities which will require them to take measurements of the cardio-vascular system, the respiratory system and of body temperature, using noninvasive techniques to investigate normal responses to routine variations in body functioning. This unit provides the core understanding of human physiology that underpins the study of the specialist physiology units within this programme. The unit also provides an overview of body functioning that is valuable for anyone working or intending to work in a...

Words: 14385 - Pages: 58

Premium Essay

Physics

...constant (we study the local gravitational force near the Earth), one-dimensional motion of an object in a fluid (where we show that there are frictional forces that vary with time), and the oscillatory motion of an object attached to a spring. After learning something about springs, we next consider the deformation of an elastic solid and the phenomenon of viscoelasticity. This is a topic of special interest in the study of structural biomolecules such as bone and blood vessels. We conclude the chapter with a discussion of the structure and dynamics of macromolecules, specifically illustrating how to apply Newton’s second law to the difficult problem of determining the molecular motions (here in one dimension) of the constituent atoms of a protein. 1. THE CONSTANT FORCE Very frequently in dealing with mechanics problems, we know the forces acting on an...

Words: 21864 - Pages: 88

Premium Essay

Nanotechnology Applications for Clean Water Solutions for Improving

...NaNotechNology applicatioNs for cleaN Water Micro & NaNo TechNologies series editor: Jeremy ramsden Professor of Nanotechnology Microsystems and Nanotechnology Centre, Department of Materials Cranfield University, United Kingdom the aim of this book series is to disseminate the latest developments in small scale technologies with a particular emphasis on accessible and practical content. these books will appeal to engineers from industry, academia and government sectors. for more information about the book series and new book proposals please contact the publisher, Dr. Nigel hollingworth at nhollingworth@williamandrew.com. http://www.williamandrew.com/MNt NaNotechNology applicatioNs for cleaN Water edited by Nora savage Office of Research and Development, US Environmental Protection Agency and (in alphabetical order) Mamadou Diallo Materials and process simulation center, Division of chemistry and chemical engineering, california institute of technology Jeremiah Duncan Nanoscale Science and Engineering Center, University of Wisconsin-Madison anita street Office of Research and Development, US Environmental Protection Agency and Center of Advanced Materials for the Purification of Water with Systems, University of Illinois at Urbana-Champaign richard sustich N o r w i c h , N Y, U S A copyright © 2009 by William andrew inc. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying...

Words: 90139 - Pages: 361

Free Essay

Dsp Textbook

...Digital Image Processing Second Edition Rafael C. Gonzalez University of Tennessee Richard E. Woods MedData Interactive Prentice Hall Upper Saddle River, New Jersey 07458 Library of Congress Cataloging-in-Pubblication Data Gonzalez, Rafael C. Digital Image Processing / Richard E. Woods p. cm. Includes bibliographical references ISBN 0-201-18075-8 1. Digital Imaging. 2. Digital Techniques. I. Title. TA1632.G66 621.3—dc21 2001 2001035846 CIP Vice-President and Editorial Director, ECS: Marcia J. Horton Publisher: Tom Robbins Associate Editor: Alice Dworkin Editorial Assistant: Jody McDonnell Vice President and Director of Production and Manufacturing, ESM: David W. Riccardi Executive Managing Editor: Vince O’Brien Managing Editor: David A. George Production Editor: Rose Kernan Composition: Prepare, Inc. Director of Creative Services: Paul Belfanti Creative Director: Carole Anson Art Director and Cover Designer: Heather Scott Art Editor: Greg Dulles Manufacturing Manager: Trudy Pisciotti Manufacturing Buyer: Lisa McDowell Senior Marketing Manager: Jennie Burger © 2002 by Prentice-Hall, Inc. Upper Saddle River, New Jersey 07458 All rights reserved. No part of this book may be reproduced, in any form or by any means, without permission in writing from the publisher. The author and publisher of this book have used their best efforts in preparing this book. These efforts include the development, research, and testing of the theories and programs to determine their effectiveness...

Words: 66542 - Pages: 267