logging in or signing up Biology 11 - Protein & Protein Synthesis dantescience Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 3051 Category: Education License: All Rights Reserved Like it (3) Dislike it (0) Added: November 08, 2009 This Presentation is Public Favorites: 3 Presentation Description An introduction to proteins and protein synthesis Comments Posting comment... By: Lide (53 month(s) ago) very educational and well done Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Proteins : Proteins 1 M.Bregar (Dante C.S.S.) Proteins : Proteins Have multiple functions: Antibodies (part of immune system) Enzymes (biological catalysts) Transport of materials Building Materials (muscles) Proteins are obtained from food High in Protein = meat, fish, milk, eggs, cheese, & nuts 2 M.Bregar (Dante C.S.S.) Transport of Materials : Transport of Materials 3 M.Bregar (Dante C.S.S.) Protein Structure : Protein Structure Proteins are polymers of amino acids A protein is made of between 300 and 4000 amino acids Amino Acids 20 different amino acids 8 are essential & must be obtained from diet 4 M.Bregar (Dante C.S.S.) Slide 5: 5 M.Bregar (Dante C.S.S.) Amino Acid Structure : Amino Acid Structure Contain the elements, C, H, O & Nitrogen Basic Structure 3 parts: amino group, carboxyl group, R-group R-group gives each amino acid with its unique properties 6 M.Bregar (Dante C.S.S.) Protein Synthesis (Making Protein) : Protein Synthesis (Making Protein) Amino Acids are linked to make polypeptides Polypeptides come together to make protein Peptide Bonds Bonds which link amino acids together Formed by a dehydration synthesis 7 M.Bregar (Dante C.S.S.) Protein Structure : Protein Structure Rule: “Structure = Function” Physical structure of a protein determines how it works Protein Structure has 4 levels of organization Primary (structure of amino acids) Secondary (helix) Tertiary (secondary structure folds) Quaternary (two or more polypeptide chains) 8 M.Bregar (Dante C.S.S.) Enzymes : Enzymes 9 M.Bregar (Dante C.S.S.) Protein Structure : Protein Structure 10 M.Bregar (Dante C.S.S.) Protein Structure : Protein Structure 11 M.Bregar (Dante C.S.S.) Denaturation : Denaturation When a protein loses its shape due to environmental factors Can be caused by: Heating above40C Change in pH (acidity) Other ways: chemicals or mechanical action Coagulation is “permanent” denaturation 12 M.Bregar (Dante C.S.S.) PROTEIN SYNTHESIS : PROTEIN SYNTHESIS M.Bregar (Dante C.S.S.) 13 Protein Synthesis : Protein Synthesis Protein synthesis is the process in which information from DNA is used to make protein Involves two basic process: TRANSCRIPTION – DNA is copied into mRNA TRANSLATION – information from mRNA is translated into protein 14 M.Bregar (Dante C.S.S.) Transcription : Transcription Takes place inside the nucleolus of a cell DNA serves as a template for the making of messenger RNA (mRNA) 15 M.Bregar (Dante C.S.S.) Transcription : Transcription RNA Polymerase unwinds DNA Process begins at promoter region RNA by complimenting bases of DNA Process ends at terminator region 16 M.Bregar (Dante C.S.S.) Messenger RNA : Messenger RNA 17 M.Bregar (Dante C.S.S.) Translation : Translation The process in which the mRNA is read and a protein is made Structures involved: mRNA – carries genetic information Ribosome – reads mRNA and assemble amino acids tRNA – carries amino acids 18 M.Bregar (Dante C.S.S.) Translation : Translation 19 M.Bregar (Dante C.S.S.) Protein Synthesis – Eukaryotes vs. Prokaryotes : Protein Synthesis – Eukaryotes vs. Prokaryotes 20 M.Bregar (Dante C.S.S.) Translation : Translation Steps: Messenger RNA is read by ribosome Transfer RNA carry amino acids which are put together for every codon Amino acids eventually form a peptide 21 M.Bregar (Dante C.S.S.) Translation : Translation 22 M.Bregar (Dante C.S.S.) Protein Synthesis – The Entire Process : Protein Synthesis – The Entire Process 23 M.Bregar (Dante C.S.S.) Protein Synthesis - Endomembrane : Protein Synthesis - Endomembrane 24 M.Bregar (Dante C.S.S.) You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.