BL 2104: Visualising Molecular Structures - Computer Practical
Click on the links to open the structure files. All write-ups are to be handed in ONE WEEK FROM TODAY
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Is the structure DNA or RNA, and why?
Write out the sequence of each strand (in the proper 5 to 3 orientation).
Comment upon the base pair arrangement.
What is meant by the stacking of the base-pairs? What force favours this arrangement?
Write out the sequence of both strands (5 to 3).
What is the relative orientation of the ribose and purine/pyrimidine ring structures?
Draw the ribose moeity of the molecule with the carbons annotated (1, 2 3 etc.)
Draw a purine ring of the molecule with the carbons annotated (1, 2 3 etc.)
Draw a pyrmidine ring of the molecule with the carbons annotated (1, 2 3 etc.)
What sugars are here and specify the linkages.
How many hydrogen bond donors and acceptors are present in this oligosaccharide? Draw an example of each and say how many are found.
Identify the reducing sugar.
Where is this sugar found?
What is the amino acid sequence of the helix? (use the NH2 - > COOH notation)
What are the mainchain-mainchain hydrogen bond interactions that stabilise these structures?
Write out the sequence of the strand. Sketch the orientation
(NH2 - > COOH) of each strand, showing the hydrogen
bond interactions between the strands (identifing the hydrogen bond donor or
acceptor of each residue in your diagram).
Write out the sequence of the strands. Sketch the orientation (NH2 - > COOH) of each strand, showing the hydrogen bond interactions between the strands (identifing the hydrogen bond donor or acceptor of each residue in your diagram).
Give the empiracle formula of the molecule. Sketch the molecule ommitting the hydrogen atoms - show where carbon-carbon double bonds are present (if any).
Give the empirical formula of the molecule. Sketch
the molecule omitting the hydrogen atoms - show where carbon-carbon double bonds
are present (if any).
Give the empirical formula of the molecule. Sketch
the molecule omitting the hydrogen atoms - show where carbon-carbon double bonds
are present (if any).
Which molecule (oleate / palmitate) has the highest
boiling point, and why?