structure classification of proteins
Download
Skip this Video
Download Presentation
Structure & Classification of Proteins

Loading in 2 Seconds...

play fullscreen
1 / 27

Structure & Classification of Proteins - PowerPoint PPT Presentation


  • 156 Views
  • Uploaded on

Structure & Classification of Proteins. Dr. Bibi Kulsoom. Proteins. Other dry elements 14\%. http://www.indiabix.com/\_files/images/data-interpretation/pie-charts/15-2-11-1.png. http://www.picturesof.net/pages/100103-180324-843042.html. Proteins: Amino Acids. Peptide bond.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Structure & Classification of Proteins' - temira


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
proteins
Proteins

Other dry elements 14%

http://www.indiabix.com/_files/images/data-interpretation/pie-charts/15-2-11-1.png

http://www.picturesof.net/pages/100103-180324-843042.html

proteins amino acids
Proteins: Amino Acids

Peptide bond

One Amino acid structure

Protein molecule

Hydrolysis by digestive enzymes

Amino acids

Hydrocarbon chain

http://www.hardbodysuccessblog.com/.a/6a00e00995147488330115704e4379970c-pi

http://www.whitetigernaturalmedicine.com/wp-content/uploads/2012/02/amino-acid-structure.jpg

slide4
Proteins are Composed :

of 20 Amino Acids

  • Essential amino acids
  • Arginine (partially essential)
  • Histidine
  • Isoleucine
  • Leucine
  • Lysine
  • Methinine
  • Phenylalanine
  • Threonine
  • Tryptophan
  • Valine
  • Non-Essential amino acids
  • Alanine
  • Aspartic acid
  • Asparagine
  • Cysteine
  • Glutamic acid
  • Glutamine
  • Glycine
  • Proline
  • Serine
  • Tyrosine
slide5
Proteins & their Classification

Classification is based on

  • Composition
  • Shape
  • Function

http://njscuba.net/zzz_artifacts/protein_2.gif

slide6
Classification Based on Composition
  • Simple proteins:

A protein that contains amino acids only.

Examples: albumin, globulins & histones.

  • Conjugated Proteins:

A protein that have some non-protein moiety in its structure along with protein part.

  • Derived proteins:

Proteins derived from simple and conjugated proteins by physical or chemical treatment. Examples: peptones peptides and denatured proteins.

nucleoproteins
Nucleoproteins

Proteins examples:

Histones, telomerase.

http://1.bp.blogspot.com/_Ik_ovkt6ICg/TNoWaLBLKXI/AAAAAAAAAIk/

glycoproteins
Glycoproteins

Proteins examples:

Glycoproteins of cell membrane, Follicle-stimulating hormone (FSH), Luteinizing hormone (LH).

http://designanduniverse.com/articles/images/cell/cell_membrane.jpg

lipoproteins
Lipoproteins

Proteins examples:

Low density lipoprotein (LDL), high density lipoprotein (HDL).

http://www.scientificpsychic.com/health/lipoproteins-LDL-HDL.html

phosphoproteins
Phosphoproteins

Proteins examples:

Enzymes (protein in nature) are phosphorylated temporarily for their regulation.

Enzyme A

Enzyme B

Enzyme A

P

P

Inactive

Active

Enzyme B

Inactive

Active

chromoproteins
Cytochromes P450Chromoproteins

Proteins examples:

Hemoglobin, cytochromes (enzymes).

http://www.presentermedia.com/files/clipart/00001000/1744/blood_cells_pc_md_wm.jpg

http://chemistry.wiki.elanco.net/file/view/hemoglobin.jpg/120238735/hemoglobin.jpg

metalloproteins
Metalloproteins

Proteins examples:

Hemoglobin, Ceruloplasmin (protein that stores and transports copper)

Ceruloplasmin

Ceruloplasmin

globular proteins
Globular Proteins

Hemoglobin and myoglobin are examples of globular proteins.

fibrous proteins or scleroproteins
Fibrous Proteins or Scleroproteins

Collagen, keratin and elastin are examples of fibrous proteins.

Collagen fiber

-keratin

-keratin

slide18
Structural Proteins

Proteins gives our cells shape, strength as well as enable movements.

Proteins examples:

keratin, collagen, elastin.

Structure Examples:

Hair, wool, nails, horns, hoofs, tendons, cartilage.

slide19
Contractile Proteins

Proteins examples:

Actin & myosin

Location in body:

Contracting fibers in muscle.

http://www.123rf.com/photo_7661491_young-man-running-in-forest.html

http://www.performance-edu.com/Insider%20News/Volume%202/Images/small%20animated%20sliding%20filament.gif

slide20
Transport Proteins
  • Protein examples:
  • hemoglobin (Carries oxygen in blood)
  • serum albumin (Carries fatty acids in blood)

Storage Proteins

  • Proteins examples:
  • Different for different sustances.
  • Ferritin (Stores iron in spleen)
  • legumes and beans in plants

http://blu.stb.s-msn.com/i/44/78A5F212E699FFFB5345C2214AE50.jpg

slide21
Proteins as Enzymes
  • Many proteins act as biological catalysts or enzymes.
  • Thousands of different enzymes exist in the body.
  • Examples: catalase, amylase, trypsin, lipase.

Immunological Proteins

  • Proteins examples:
  • Gamma globulins
  • when a pathogen enters the body, the immune system produces antibodies against it that fight against the invader.

Antibody

Bacterium

Antibody

http://www.microbiologyonline.org.uk/about-microbiology/microbes-and-the-human-body

http://www.biology.arizona.edu/immunology/tutorials/antibody/graphics/antibody.gif

proteins as buffers
Proteins as Buffers

Example:

Plasma proteins and intracellular preoteins.

http://human-physiology---ashley-vg.wikispaces.com/Chemical+Aspects+of+Physiology

maintaining osmotic pressure
Maintaining Osmotic Pressure
  • Protein examples:
  • Albumin, globin, globulin.

Hormone

Protein as Hormone

Examples: Insulin, glucagon, growth hormone etc.

http://www.hcc.bcu.ac.uk

cell cytoskeleton
Protein Channels & ReceptorsCell cytoskeleton

Channels: Protein pores that run like tunnels across the lipid bilayer will allow specific materials that we need, like glucose, to slip through the membrane.

Receptors: proteins that mediate the effects of hormones in side the cell.

Examples: Microfilaments, intermediate filaments & microtubules.

slide25
Clotting Factors

Clotting proteins activate and make meshwork of fibrin to stop bleeding. Examples:

Factors I, II, III, IV, V etc.

http://www.buzzle.com/img/articleImages/323361-36236-16.jpg

http://media-3.web.britannica.com/eb-media//28/98328-050-4F03CFD9.jpg

http://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/

ad