100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Introduction to Bioorganic Chemistry and Chemical Biology: Chapter 4 Answers $12.49   Add to cart

Exam (elaborations)

Introduction to Bioorganic Chemistry and Chemical Biology: Chapter 4 Answers

 170 views  0 purchase
  • Course
  • Institution
  • Book

Answer 4.1 The bulky tert-butyl group has a strong equatorial preference, the following two conformations will be predominant. The anti isomer cannot hydrolyze through neighboring group participation; the syn isomer can hydrolyze through neighboring group participation. OCH3 -O P O O :O- anti ...

[Show more]

Preview 2 out of 7  pages

  • April 30, 2021
  • 7
  • 2019/2020
  • Exam (elaborations)
  • Questions & answers
avatar-seller
Introduction to Bioorganic Chemistry and Chemical Biology 1




Answers to Chapter 4
(in-text & asterisked problems)



Answer 4.1
The bulky tert-butyl group has a strong equatorial preference, the following two
conformations will be predominant. The anti isomer cannot hydrolyze through
neighboring group participation; the syn isomer can hydrolyze through neighboring
group participation.




m
OCH3 OCH3




er as
-O
P -O
P
O O




co
O O
..




eH w
-O
:O -
anti syn




o.
Van Vranken & Weiss | 978-0-8153-4214-4
Answer 4.2
rs e
Introduction to Bioorganic Chemistry and Chemical Biology | A4096
ou urc
© www.garlandscience.com design by www.blink.biz
There are two plausible mechanisms that avoid expulsion of an anionic H2N– group.
Without some mechanistic data, you cannot predict which is the most likely.
o

H B
HO .. B: H O
aC s

NH2 NH3+
vi y re


N N
- N N
HO: NH2 R O- -O :O - O
R O- NH3+
H B NH
N N N
N N N N
ed d




H B ..
R O B: H O - O .. R O- R O R O
NH2 NH2
ar stu




N N
N N ..
R O- R O-
Introduction to Bioorganic Chemistry and Chemical Biology | A4097
Van Vranken & Weiss | 978-0-8153-4214-4
is




Answer 4.3
© www.garlandscience.com design by www.blink.biz
Th




A CU U
3' C U C G G GG C
C U G U C G 5' 3' C U C G G A
G CC U G U C G 5' 5'
5' G A G C CC UG C A C A G C 3'
AG 5' GA G C C GG AG A C A G C 3' 3'
UC
sh




stem loops "kissing complex"
Introduction to Bioorganic Chemistry and Chemical Biology | A4098
Van Vranken & Weiss | 978-0-8153-4214-4
© www.garlandscience.com design by www.blink.biz




This study source was downloaded by 100000763811389 from CourseHero.com on 04-29-2021 03:53:54 GMT -05:00


https://www.coursehero.com/file/35518226/Answers-to-Chapter-4pdf/

, 2 Introduction to Bioorganic Chemistry and Chemical Biology: Answers to Chapter 4


Answer 4.4
The following figure shows the minimum free-energy structure from RNAfold and
GeneBee and the second-lowest energy structure from MC-fold (the lowest-energy
structure from MC-fold did not match).
G CU
A
U U
U C GG
C C
G G UG
3' A C GC U
C CA U G
CGG CUCC
A CG
5' G C C G A G G G
UA U G C C U A AA
G CA CGA
C G C U GA
U A
C G
A A
G U
U G
UG
Introduction to Bioorganic Chemistry and Chemical Biology | A4099
Van Vranken4.5
Answer & Weiss | 978-0-8153-4214-4
© www.garlandscience.com design by www.blink.biz




m
four types of base pairs: A•T, C•G, G•C, or T•A




er as
co
5' N N N N N N N N N N
four types of unpaired bases: A, C, G, or T




eH w
3' N N N N N N N N N
N




o.
rs e twelve types of mis-matches:
A•A, A•C, A•G, C•A, C•C, C•T, G•A, G•G, G•T, T•C, T•G, T•T
ou urc
Total possibilities = 47• 44• 12
= 411• 12
o
= 50,331,648
Introduction to Bioorganic Chemistry and Chemical Biology | A4100
aC s

Van Vranken & Weiss | 978-0-8153-4214-4
Answer 4.6
vi y re


© www.garlandscience.com design by www.blink.biz

RNA RNA RNA
O
.. -
O O -
RNA O O O O O O O
-O
.. O
O H :B N N N
ed d




CH3 CH3 .. CH
3
ar stu




H B




RNA RNA
is




-
O .. O
O O
O O H
Th




N+ N
CH3 CH3
H
sh




Introduction to Bioorganic Chemistry and Chemical Biology | A4101
Van Vranken & Weiss | 978-0-8153-4214-4
© www.garlandscience.com design by www.blink.biz




This study source was downloaded by 100000763811389 from CourseHero.com on 04-29-2021 03:53:54 GMT -05:00


https://www.coursehero.com/file/35518226/Answers-to-Chapter-4pdf/

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Welch1. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

64438 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.49
  • (0)
  Add to cart