Protein structure Essays

  • Protein Structure Prediction Techniques Essay

    859 Words  | 4 Pages

    chapter presents an overview of protein structure prediction by representing some of the techniques. The structure prediction of protein has two main techniques. The secondary structure prediction and tertiary structure prediction methods are also discussed in this chapter. 2.1 OVERVIEW OF PROTEIN STRUCTURE PREDICTION TECHNIQUES Proteins perform many biological functions and represent the building blocks of organisms. Basically there are 20 types of amino acids in proteins consists of different chemical

  • Qualitative Protein Analysis

    1080 Words  | 5 Pages

    these are done to identify the structure and reaction of each protein to a particular test. There are general and specific tests to be able to identify the different types of proteins clearly and to classify them into groups. General tests include the Biuret and Ninhydrin while for the specific types of tests, these include the Xanthoproteic, Million-Nasse, Hopkins-Cole, Sakaguchi and Lead Acetate. Biuret Test. The Biuret Test is positive for peptide bonds in the proteins. According to Koffuor (2012)

  • Macromolecular Crowding

    1184 Words  | 5 Pages

    INTRODUCTION Protein folding is a process by which a polypeptide chain folds into its native three dimensional structure, a conformation that is biologically functional. It is most often assumed that protein folding and its biophysical and structural properties observed in dilute buffer solutions in vitro also represent the in vivo scenario. However the intracellular environment is highly crowded because of the presence of large amounts of soluble and insoluble biomolecules including proteins, nucleic

  • Protein Precipitation Lab Report

    798 Words  | 4 Pages

    Isolation: Proteins are large molecules with diverse biological functions. They could be catalysts, receptors, chemical messengers etc. in order to study proteins, they need to be isolated in pure form. The three-dimensional structure of most proteins is a consequence of many relatively weak non-covalent interactions. Disrupting cellular structure is required to release the proteins from the cell. Purification of proteins begins with homogenizing the tissues, then subsequent fractionation and purification

  • Heme Synthesis Lab Report

    753 Words  | 4 Pages

    involved the co-ordinate production of heme & globin. As Hb is composed of 4 subunits i.e. two α & two β globin chain & each of this subunit consist of heme group in the center. Heme- regulates reversible binding of oxygen by Hb. Globin- It is a protein surrounding & protecting the heme molecule. Heme synthesis: Heme synthesis is carried out in mitochondria & cytosol of the cell involving cascade of steps :- 1) The first step occurs in mitochondria, where condensation of succinyl-CoA & glycine

  • Slipknotted Proteins Lab Report

    873 Words  | 4 Pages

    knotted/slipknotted protein As mentioned earlier in this chapter, pulling on two ends of a protein is a simple way to test the existence of a knot. More importantly, the mechanism of pulling knotted/slipknotted proteins can provide useful insight on the formation of the knot/slipknot. Quite a few knotted/slipknotted proteins have been pulled in both experimental and computational studies.(103-110) 1.5.1 Tightening the knot Upon being pulled on its two ends, a knotted protein will be unfolded and

  • Hemoglobin Lab Report

    6523 Words  | 27 Pages

    1. Introduction: a. Hemoglobin structure: Hemoglobin is metalloprotein found in red blood cells having four polypeptide chains. Adult hemoglobin contains 2 alpha (141amino acid) and 2 beta chains (146 amino acid) which forms a tetramer called as globin and each chain is attached to iron containing prosthetic group heme (protoporphyrine IX). Ferrous ion of this heme is linked to globular protein by binding ‘N’ in the center of the protoporphyrin ring. There is a non-covalent interaction between four

  • Epinephrine Causes: Questions And Answers

    1587 Words  | 7 Pages

    Question 4 Answer: Dopamine, norepinephrine, and epinephrine are a group of neurotransmitters called catecholamines. Catecholamines are synthesized from tyrosine, an amino acid (1). Structurally, “they all have an amino group (—NH2—NH2) and a catechol ring composed of six carbons and two adjacent hydroxyl (—OH—OH) groups” (1). These catecholamines, “may cause either excitation or inhibition, depending on the type of metabotropic receptor at the synapse” (1). Norepinephrine is produced in the adrenal

  • Hepcidin Synthesis

    765 Words  | 4 Pages

    studies have demonstrated the relationship between hepcidin and iron. Nicolas et al. observed a severe iron overload in mice that were knockout for the gene encoding hepcidin [1]. It has also been shown that hepcidin is regulated by hemojuvelin, a protein produced in the liver and whose gene expression is responsible for juvenile hemochromatosis, causing excessive accumulation of iron in different organs, mainly in the liver [2] and promoting the development of certain infectious diseases [3]. The

  • Complex Macromolecules: The Five Types Of Proteins

    744 Words  | 3 Pages

    Proteins are complex macromolecules that are formed by elements carbon, hydrogen, oxygen and nitrogen. Proteins composed of one or more polypeptide chains of amino acids. The main functions of proteins are to structure, support, protect, make movement, catalyst, transport and make hormones in human body. In the structural role, collagen and elastin provide support for connective tissue. Actin and myosin are proteins that involved in muscle contraction and movement. Haemoglobin is a protein that transports

  • Macromolecules Research Paper

    1364 Words  | 6 Pages

    portray: Proteins, starches, lipids and nucleic corrosive. I will likewise depict the capacities and why they are critical in our bodies. Proteins Proteins are polymers of amino acids that are joined head-to-tail in a long chain that is then collapsed into a three-dimensional structure one of a kind to every sort of protein. The covalent linkage between two contiguous amino acids in a protein (or polypeptide) chain is known as a peptide bond. There are twenty amino acids that make up proteins. Every

  • Gamma Protein Analysis

    8662 Words  | 35 Pages

    ABSTRACT Gamma secretase enzyme is a multi-subunit proteinase complex, an integral membrane protein that severs single-pass transmembrane proteins at residues intervals the transmembrane domain. The most substrates of γ- secretase are amyloid precursor protein (APP), an outsized integral membrane macromolecule that, once cleaved by each γ-and β-secretase, produces 39-42 amino acid amide known as amyloid beta whose abnormally folded fibrillar type is that the primary part of amyloid plaques found

  • Double Helical Structure Essay

    2085 Words  | 9 Pages

    DETAILED STRUCTURE OF A DOUBLE HELICAL DNA. A DNA molecule consists of a double helical structure made up of two strands running in opposite directions and twisted around each other. The helical structure of a DNA molecule is similar to the structure a corkscrew or a spring. Running in opposite directions meant that the DNA strands are anti-parallel to each other where one strand has 3’ end at its terminal while the other strand has 5’ end at its terminal. 5’ and 3’ indicates the carbon numbers in

  • Membrane Fluidity Research Paper

    1465 Words  | 6 Pages

    cereviase. Phosphorylation of His kinase will respond with an increase in ambient osmolarity and transduces the signal to mitogen-activated protein kinases cascade Murata & Los, 1997). Besides His Kinase, another potential sensor is a Ca2+ channel. However, Ca2+ channel was only found in higher plant and such channel has not been fully characterized. Ca2+ channel opens at low temperatures during

  • Assignment: Composition Of Nucleosomes

    1015 Words  | 5 Pages

    DNA and the cellular histone protein cores forming eukaryotic chromosomes. Structurally, the nucleosome core particle comprises 1.6 left-handed superhelical turns of DNA wound around a protein complex called the histone octamer, which consists of 2 copies each of the core histones attached to the central tetramer H3/H4. The latter is flanked by two H2A/H2B dimers (Kornberg 868). The histone octamer, therefore, is a set of the 8 basic proteins whose fundamental structure of a single molecule includes

  • Pt2520 Unit 2

    623 Words  | 3 Pages

    gene is the basic physical and functional unit of heredity. They are specifically encoded with instructions on how to make proteins and comprise only about 2% of the human genome. 4. How much of the human genome is composed of genes? What is the rest made up of? Only about 2% of the human genome is comprised of genes, an estimated 25,000 genes. The majority of cellular structures

  • Biochemistry: The Cytoskeleton

    1465 Words  | 6 Pages

    introduced by a French embryologist Paul Wintrebert in 1931 (Frixione 2000). Cytoskeleton is a complex network array of cytoplasmic fibers that determine and control visco-elastic properties and mechanical strength of cells. It also organizes and gives structure to the cell interior, controls many dynamic processes, such as intracellular trafficking, cell division, adhesion, and locomotion. It is ubiquitously present in all eukaryotic cells and its analogues have been discovered in prokaryotes. Biochemically

  • Nucleoid Case Study Tb

    5505 Words  | 23 Pages

    including proteins, DNA, RNA and other compounds are located within inside the cytosol. The region of the cell which encompasses the bacterial genomic DNA is termed ‘Nucleoid’. Nucleoid is composed largely of DNA and small amounts of proteins and RNA (Dillon and Dorman, 2010; Dorman, 2014a; Thanbichler et al., 2005). The genomic DNA is organized for storage in ways that are compatible with all the major DNA-related processes like replication, transcription and chromosome segregation. Proteins that play

  • Differences: The Disadvantages Of Prokaryotes And Eukaryotes

    786 Words  | 4 Pages

    organelles and metabolic processes occur in the cytoplasm. Both cells types have ribosomes; however they do not have the same structure. The ribosomes of a eukaryote contain more protein and less RNA than inside the ribosomes of prokaryotes. The ribosomes are also larger in eukaryotes and are able to be bound to the endoplasmic reticulum. The endomembrane system allows for the proteins to be more complex as they are able to mature, become modified and are transported around and outside the cell. The endomembrane

  • Essay Of Microorganisms

    736 Words  | 3 Pages

    of microbes is separated from the environment by the hydrophobic plasma membrane which is impermeable to hydrophilic solutes, most of the hydrophilic compounds can only pass through the plasma membrane by means of integral membrane proteins which include carrier proteins, permeases or transporters due to the permeability barrier exerted by the phospholipid components of plasma membrane. Movement of solutes in and out of bacteria can be classified by the following processes: diffusion, facilitated