07Fexam4key - Name_KEY EID CH 339K Exam 4 25 Oct 2007 100...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Name_______________ KEY __________________________ EID__________________________________________ 1 CH 339K Exam 4 25 Oct 2007 100 points total 15 pts. 1 . Draw the furanose and pyranose forms of D-ribose (Fischer projection shown at left), and label which is which. Use Haworth perspectives. Full credit requires the correct stereochemistry of all hydrogens and hydroxyls. furanose pyranose OH H H HOH 2 C HO OH H H O furanose O H OH H OH H OH OH H H H pyranose (Anomeric carbons can be either α or β α is shown here) 2 . Describe the glycosidic bonds indicated by the arrows in the structure shown below [e.g. α (1 4)]: 3 pts. a . β 1 4 3 pts. b . β 1 4 3 pts. c . α 2 3 3 pts. d . The molecule above is a member of what class of glycolipids? Ganglioside (glycosphingolipid; sphingolipid; ceramide) a b c
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Name_______________ KEY __________________________ EID__________________________________________ 2 3 . A glycoprotein in red blood cells (RBC) has the following properties: It’s molecular weight is 50,000 (60% carbohydrate, 40% protein) It is an integral membrane protein Five fragments (CB-1 – CB-5) are produced by CNBr treatment of the purified protein. Three of these fragments have oligosaccharide chains (abbreviated CHO) attached as indicated below: 25% of the carbohydrate is sialic acid. It can be removed completely by treating intact RBC with an enzyme, neuraminidase. Lactoperoxidase is an enzyme that can be used to label exposed tyrosine side chains
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/22/2008 for the course CH 339K taught by Professor Appling during the Fall '08 term at University of Texas.

Page1 / 4

07Fexam4key - Name_KEY EID CH 339K Exam 4 25 Oct 2007 100...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online