Nucleic Acids_KEY

Nucleic Acids_KEY - donate to an H-bonding interaction. Ex....

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CHEM 109C – Zhang CLAS, F10 Nucleic Acids - KEY 1. Ch 27 #2 Write the full name and draw the structure for the following. Indicate whether they are nucleosides or nucleotides. a. dCDP 2’-deoxycytidine 5’-diphosphate is a nucleotide (nucleoside = base + b. dTTP 2’-deoxythymidine 5’-triphosphate is a nucleotide 2. Ch 27 #21 Name the following. guanosine 3’-monophosphate is a nucleoside 2’-deoxythymidine is a nucleoside 3. Ch 27 #4 Indicate whether each functional group of each heterocyclic base is an H-bond acceptor, an H-bond donor or both. Draw the H-bonds between complementary base pairs. H-bond acceptors (A): X: where X is N, O (or F), groups the have the lone pairs to “accept” an H in an H-bonding interaction. Ex. N: in a ring or as –NH 2 , O in carbonyl group H-bond donor (D): X-H where X is N, O (or F), groups that have the H to
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Unformatted text preview: donate to an H-bonding interaction. Ex. O-H, or NH 2 A = Adenine N N N H N NH 2 ring N is A, amino group is D Page 1 of 2 CHEM 109C Zhang CLAS, F10 Nucleic Acids - KEY G = Guanine NH N N H N O NH 2 ring NH and amino grp are D, carbonyl O is A C = Cytosine N N H NH 2 O ring N and carbonyl O are A, amino group is D T = Thymine NH N H O O ring NH is D, carbonyl O is A U = Uracil NH N H O O ring NH is D, carbonyl O is A (#10 Why do both T and U specify the incorporation of A? B/c T and U are the same in their interaction with their base pair A, maximum number of H-bonds) 2 H-bonds between A & T or A & U 3 H-bond between G & C 4. I also recommend problems like # 7, 11-14, 23-28 and will go questions on these types of problems when we get back from Thanksgiving. Page 2 of 2...
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This note was uploaded on 01/17/2011 for the course CHEM 109C taught by Professor Bruice during the Fall '08 term at UCSB.

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Nucleic Acids_KEY - donate to an H-bonding interaction. Ex....

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