Chemsheets AS006 (Electron arrangement)

Slides:

Advertisements

Similar presentations

The Structure of Proteins

Advertisements

Welcome to class of Amino Acids Dr. Meera Kaur. Learning objectives To understand - the structural features of amino acids - the classifications of amino.

Daily Starter  Explain how a peptide bond is formed. (What is the reaction called and how does it happen?)

– Carbohydrates – Lipids (fats) – Proteins – Nucleic Acids Organic molecules are the molecules in living things There are four types of organic (carbon-based)

Unit 2 – Chemistry of Life.  

Exploring Macromolecules

ProteiN proteiN – “N” stands for nitrogen. There is an “N” in the word proteiN The element Nitrogen is always present in proteiNs.

Polypetides and proteins

Proteins Clicker REVIEW!!!. What functional group is circled? 1.Carboxyl 2.Amine 3.Phosphate 4.Ketone 5.Aldehyde 6.Hydroxyl 7.Sulfhydryl ajsklfjasdkf..

CHAPTER 19 Problems. Learning Check Solution Nonpolar (NP) Polar (P)

Hannah Barreca Daria Lukasz Ian Reucroft Roshelle Belfer Stephanie Puthumana.

Objectives E – Recall the different structures of proteins and the test for proteins. C – Describe how a peptide bond is formed. Describe the different.

Amino Acids - The Building Blocks of Life!  Amino acids are molecules containing both the amide group – NH 2 at one end of the molecule and carboxyl group.

Proteins!. Proteins Proteins account for more than 50% of the dry mass of most cells Monomer: amino acids 20 amino acids used in cells Central carbon.

Amino Acids, Isomerism and Condensation Polymers.

Polymer a large molecule of repeating units (monomer)

Video Questions What do the following prefixes mean? Mono, Poly, Exo, and End What do you need to have “LIFE”? Draw a picture of an atom. Why do atoms.

Proteins Name__________ Dietary Sources of Proteins  Fish, meat, nuts, beans, dairy products, some whole grains are high in protein.

AMINO ACIDS Amino acids are the monomers from which proteins are made. The general structure of an amino acid as: where NH2 represents an amine group,

The Structure of Proteins. Functions of Proteins Fibrous proteins – structural, e.g. collagen. Globular proteins – metabolic functions, e.g. haemoglobin.

Day 20 HW Review. 1.) What are monomers? Provide at least two examples from the reading. Single, small molecules that can assemble into larger complex.

Organic Macromolecules. Organic Contains carbon and hydrogen atoms together Example: –CH 4 :methane –CO 2 :carbon dioxide –C 6 H 12 O 6 : sugar –H 2 O:water.

Our body is close to 20% protein and many of the foods we eat also contain protein.

Aim: What is the primary structure of proteins ?.

Proteins Clicker. The molecules marked “W” are best described as: 1.Monomers 2.Polymers 3.Isomers 4.isotopes.

Proteins Protein Basics Used in variety of cellular functions Made of smaller amino acids –Monomer: Amino acid –Polymer: Protein (often multiple polypeptides)

Amino Acids, Peptides, and Proteins. Introduction to Amino Acids  There are about 26 amino acids, many others are also known from a variety of sources.

4.8 Amides 1. Amides 2 Amide functional group Amides Possible under high temp for extended time to prepare amide from a carboxylic acid and an amine.

Protein Recap. Protein Syllabus Draw the general amino acid structure.

PROTEINS Characteristics of Proteins Contain carbon, hydrogen, oxygen, nitrogen, and sulfur Serve as structural components of animals Serve as control.

Homework: Read Concepts pgs Pg 83 #9,10,11 pg 85 #5,6,8,11,13.

Option B Biochemistry Jeff Venables Northwestern High School.

Key area: Proteins Overview In this section, study the structure and function of proteins. Learn about how they are formed from amino acids in condensation.

Proteins - made of H, O, C, and N - formed by linking monomers called amino acids. - most important organic compound – body structure Amino Acids - 20.

Protein chemistry Lecture Amino acids are the basic structural units of proteins consisting of: - Amino group, (-NH2) - Carboxyl group(-COOH)

Proteins Side group R OH Amino Group H Carboxyl Group N C C H O H.

Proteins & Enzymes.

Proteins, Enzymes, and reagent tests.

Chemsheets AS006 (Electron arrangement)

Amino Acids carboxylic acid amine R varies with amino acid R = H

Starter A dye can be made from 4-methylphenylamine and 2,6-dimethylphenol, shown below 1)Identify the inorganic nitrogen-containing compound formed by.

Natural products: proteins

Amino Acids carboxylic acid amine R varies with amino acid R = H

Proteins Basic structure of an amino acid

What do you think is happening to the proteins within these eggs????

Biological Molecules.

Fats, Carbs, and Proteins

3. Proteins Monomer = Amino acids Globular in shape Or Spherical.

Study Question: What are enzymes?

O CH3 – CH2 – CH2 – C – OH HO – CH3 butanoic acid methanol

Fig. 5-UN1  carbon Amino group Carboxyl group.

Proteins Describe what a protein is and give examples of what they are used for. Describe the structure and shape of the different types of proteins. Explain,

Do Now Get out homework for checking

Proteins Major Organic Compounds.

Chemical Reactions

Worked Example Determining Side-Chain Hydrophobicity/ Hydrophilicity

PROTEINS Unlike Carbohydrates and Fats, which are primarily used as an energy source; Proteins are primarily used to structurally build and repair the.

Proteins Side group R OH Amino Group H Carboxyl Group N C C H O H.

Presentation transcript:

Chemsheets AS006 (Electron arrangement) 21/04/2017 www.CHEMSHEETS.co.uk AMINO ACIDS © www.chemsheets.co.uk A2 022 15-Jul-12

AMINO ACIDS amine group carboxylic acid group © www.chemsheets.co.uk A2 022 15-Jul-12

glycine © www.chemsheets.co.uk A2 022 15-Jul-12

alanine © www.chemsheets.co.uk A2 022 15-Jul-12

valine © www.chemsheets.co.uk A2 022 15-Jul-12

serine © www.chemsheets.co.uk A2 022 15-Jul-12

aspartic acid © www.chemsheets.co.uk A2 022 15-Jul-12

From nobelprize.org

amino acids are chiral (except glycine where R = H) only one enantiomer occurs usually Public domain image from wikipedia

Low pH (acidic) Neutral pH High pH (alkaline) © www.chemsheets.co.uk A2 022 15-Jul-12

Draw the structure of the amino acid at the pH shown. © www.chemsheets.co.uk A2 022 15-Jul-12

Draw the structure of the amino acid at the pH shown. © www.chemsheets.co.uk A2 022 15-Jul-12

Joining amino acids together to make polypeptides and proteins: Condensation reaction: molecules join and water is eliminated © www.chemsheets.co.uk A2 022 15-Jul-12

Breaking down polypeptides and proteins into amino acids: Needs: acid or enzyme Hydrolysis reaction: reaction with water in which O-H bond breaks © www.chemsheets.co.uk A2 022 15-Jul-12

Public domain image from wikipedia

Public domain image from wikipedia

Helix held in shape by hydrogen bonds Public domain image from wikipedia Helix held in shape by hydrogen bonds

Public domain image from wikipedia

Public domain image from wikipedia