7 - LECTURE 7 ANNOUNCEMENTS 1. QUIZ 1 MEAN SCORES: A 23.7 B...

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LECTURE 7 ANNOUNCEMENTS 1. QUIZ 1 MEAN SCORES: A 23.7 B 22.5 C 20.4 6. PyMOL ASSIGNMENT #2: SECONDARY STRUCTURES (FOR NEXT QUIZ) 7. WATCH TWO VIDEOS! “STERIC HINDRANCE OF A POLYPEPTIDE CHAIN” AND “SECONDARY STRUCTURES IN PROTEINS” 3. QUIZ 2 ON 9/15 WILL COVER LECTURES 5, 6, 7, AND 8. POLICY REMINDER: IF YOU MISSED QUIZ 1 (OR ANY QUIZ), YOU ARE ELIGIBLE TO TAKE THE MAKE-UP QUIZ ON 12/1. 2. RE-GRADE POLICY: SUBMIT A WRITTEN ARGUMENT STAPLED TO YOUR QUIZ. PLACE IT IN THE PURPLE RE-GRADE FOLDER AT THE FRONT OF THE LECTURE HALL. YOU WILL HAVE ONE WEEK TO SUBMIT FOR RE-GRADE, FROM THE TIME QUIZZES ARE RETURNED. NO ORAL ARGUMENTS , ONLY WRITTEN, ATTACHED TO YOUR QUIZ. WEDNESDAY'S LECTURE: NATURE OF THE α -HELIX TODAY: 5. CAN'T PICK UP YOUR QUIZ AFTER CLASS? FIND IT AT RESERVE DESK, BIO CENTER β -SHEET, TURNS THE RAMACHANDRAN MAP 9. TODAY, 2:55PM COMSTOCK B108: SHOULD I APPLY TO MEDICAL SCHOOL THIS YEAR? THE OBSERVED OF PROTEIN FOLDING COLLAGEN STRUCTURE 8. CU PRE-DENTAL SOCIETY TALK: MONDAY 9/13 AT 5PM IN G01 STIMSON 4. NO GRAPHING CALCULATORS DURING QUIZZES OR EXAMS.
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SECONDARY STRUCTURE: β SHEETS PARALLEL Φ ~ -60 o to -150 o , Ψ ~ +90 o to +180 o REPEATING YIELDING A HIGHLY EXTENDED POLYPEPTIDE CHAIN. RUNS OF β -SHEET ARE SIDE-BY-SIDE STRANDS, NOT CONTINUOUS SEQUENCE ALL POSSIBLE H-BONDS ARE MADE BETWEEN STRANDS STRANDS ARE SO-CALLED “PARALLEL” OR ELSE “ANTI-PARALLEL” ALL R GROUPS ARE EITHER ABOVE OR BELOW THE PLANE OF THE STRANDS N N N N C C C C 3-STRAND β -SHEET β -SHEET, EDGE VIEW ANTIPARALLEL REPRESENT A STRAND AVERAGE STRAND LENGTH 6 AA, OR ~ 20 ANGSTROM
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This note was uploaded on 12/10/2011 for the course BCHEM 3350 taught by Professor Feig during the Fall '09 term at Cornell University (Engineering School).

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7 - LECTURE 7 ANNOUNCEMENTS 1. QUIZ 1 MEAN SCORES: A 23.7 B...

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