The diagram to the right illustrates the inter-actions of the amino acid side chains of two a-helical polypeptide strands in a coiled-coil, viewed end-on and projected along the helix axes from the N-terminal to the C-terminal end. Are the macrodipoles of the two a- helices oriented parallel or anti-parallel? For this projec- tion is the positive end of the macro-dipole in the sur- face of the paper or below the surface? a

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
**Text Transcription:**

The diagram to the right illustrates the interactions of the amino acid side chains of two α-helical polypeptide strands in a coiled-coil, viewed end-on and projected along the helix axes from the N-terminal to the C-terminal end. Are the macrodipoles of the two α-helices oriented parallel or anti-parallel? For this projection, is the positive end of the macrodipole in the surface of the paper or below the surface?

**Diagram Explanation:**

The diagram features two α-helices represented as circles arranged in helical fashion, viewed from an end-on perspective. Each circle is labeled with a letter, indicating different amino acid side chains interacting with one another. The left helix includes the side chains labeled a, b, c, d, e, f, and g. The right helix includes corresponding side chains labeled a', b', c', d', e', f', and g'. 

Arrows between the side chains demonstrate the direction of interactions. The orientations of these arrows can help determine whether the helices are aligned parallel or anti-parallel. The presence of shaded areas in the second helix may be used to suggest a particular orientation or depth, indicating whether the positive end of the macrodipole is above or below the surface.
Transcribed Image Text:**Text Transcription:** The diagram to the right illustrates the interactions of the amino acid side chains of two α-helical polypeptide strands in a coiled-coil, viewed end-on and projected along the helix axes from the N-terminal to the C-terminal end. Are the macrodipoles of the two α-helices oriented parallel or anti-parallel? For this projection, is the positive end of the macrodipole in the surface of the paper or below the surface? **Diagram Explanation:** The diagram features two α-helices represented as circles arranged in helical fashion, viewed from an end-on perspective. Each circle is labeled with a letter, indicating different amino acid side chains interacting with one another. The left helix includes the side chains labeled a, b, c, d, e, f, and g. The right helix includes corresponding side chains labeled a', b', c', d', e', f', and g'. Arrows between the side chains demonstrate the direction of interactions. The orientations of these arrows can help determine whether the helices are aligned parallel or anti-parallel. The presence of shaded areas in the second helix may be used to suggest a particular orientation or depth, indicating whether the positive end of the macrodipole is above or below the surface.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
Recommended textbooks for you
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781319114671
Author:
Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:
W. H. Freeman
Lehninger Principles of Biochemistry
Lehninger Principles of Biochemistry
Biochemistry
ISBN:
9781464126116
Author:
David L. Nelson, Michael M. Cox
Publisher:
W. H. Freeman
Fundamentals of Biochemistry: Life at the Molecul…
Fundamentals of Biochemistry: Life at the Molecul…
Biochemistry
ISBN:
9781118918401
Author:
Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:
WILEY
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781305961135
Author:
Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:
Cengage Learning
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781305577206
Author:
Reginald H. Garrett, Charles M. Grisham
Publisher:
Cengage Learning
Fundamentals of General, Organic, and Biological …
Fundamentals of General, Organic, and Biological …
Biochemistry
ISBN:
9780134015187
Author:
John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher:
PEARSON