(a) A solution containing these five proteins was adjusted to pH 7.0 and then applied to a SIZE-EXCLUSION COLUMN. Assume that these five protein molecules are spherical in shape. Which protein is likely to be eluted LAST from the column? Explain briefly.  (b) In another experiment, this protein mixture was first adjusted to pH 6.7 before applying to a CATION-EXCHANGE COLUMN.  (i)What is the net charge on phosphorylase b? (ii) Which of these five proteins will bind to the CATION-EXCHANGER?

Curren'S Math For Meds: Dosages & Sol
11th Edition
ISBN:9781305143531
Author:CURREN
Publisher:CURREN
Chapter21: Heparin Infusion Calculations
Section: Chapter Questions
Problem 1.1P
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The following table shows the molecular masses (Mr) and isoelectric points (pI) of five proteins:

Protein

Mr

pI

Chicken egg white lysozyme

14,000

11.0

Carbonic anhydrase

30,000

5.4

Ovalbumin

45,000

4.5

Phosphorylase b

97,000

6.7

Lactate dehydrogenase

140,000

7.12

(a) A solution containing these five proteins was adjusted to pH 7.0 and then applied to a SIZE-EXCLUSION COLUMN. Assume that these five protein molecules are spherical in shape. Which protein is likely to be eluted LAST from the column? Explain briefly. 

(b) In another experiment, this protein mixture was first adjusted to pH 6.7 before applying to a CATION-EXCHANGE COLUMN

(i)What is the net charge on phosphorylase b?

(ii) Which of these five proteins will bind to the CATION-EXCHANGER? Explain briefly.v

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