Question

In: Chemistry

Two hFGF-1 mutants, A and B, are purified using a heparin-Sepharose column. Mutant A is eluted...

Two hFGF-1 mutants, A and B, are purified using a heparin-Sepharose column. Mutant A is eluted upon addition of 0.1M NaCl. Mutant B is eluted upon addition of 0.2 M NaCl. Which protein has a higher affinity for heparin? Is either protein expected to be 100% pure after this purification step?

Solutions

Expert Solution

A = 0.1 M

B = 0.2 M

higher affinity to NaCl will be the one with least concentration, since it elutes faster and "easier" on it

so

A elutes better on Nacl (ionic) solution than B

therefore

B has much more affinity toward the column,

The 100% separation is not likely to occur, since in chromatography or elution we have just partial separations, due to the coefficients of distributino in polar/ionic solvents


Related Solutions

1. If DE 52 column was equilibrated and eluted with 0.1 M NaOH, Predict and explain...
1. If DE 52 column was equilibrated and eluted with 0.1 M NaOH, Predict and explain the results of a gel fileration chromatography and ion exchange chromatography 2. BSA (pI = 4.6), Lysozyme (pI = 11), hemoglobin pI (6.5) Explain whether the above proteins will bind to the column equilibrated in 0.1 M Tris pH 8.0 3. For the ion-exchange resin, what could be an alternative approach for the elution of the sample components. What could be the result and...
A Drosophila female homozygous mutant for two recessive genes (a and b) is crossed to a...
A Drosophila female homozygous mutant for two recessive genes (a and b) is crossed to a wild-type male. The F1 are all wild-type. An F1 female is crossed to a double-mutant male and the following phenotypes were seen in the F2: a b 497 + + 460 a + 465 + b 426 Total 1848 Perform a “best fit” or apriori χ2 analysis to determine if genes a and b assort independently. Give the value for χ2, DF and Probability;...
1) Matching. Fill in the number matching column A with the column B _______ adsorption chromatography                      ...
1) Matching. Fill in the number matching column A with the column B _______ adsorption chromatography                          1. Solute equilibrates between mobile phase and surface of stat. phase _______ Reverse phase                                                        2. Effluent from a chromatographic column _______ ion-exchange chromatography                              3. Relates resolving power of a column with parameters that cause peak                                                                                      broadening         _______ molecular exclusion chromatography                      4. The most common type of column used in partition chromatography _______ affinity chromatograhy                                              5. Different size solutes penetrate...
Using the rII mutant bacteriophage and E. coli strains B and K, semour benzer studied gene...
Using the rII mutant bacteriophage and E. coli strains B and K, semour benzer studied gene structure by both recombination and complementation. Wild type phages form plaques on strains B or K; rII forms plaques on B only. A. In one set of experiments, Benzer infected E. coli strain B simultaneously with two different rII mutants. Progeny phages were collected and used to infect strain K, and, occasionally, plaques formed. B. In a second set of experiments, Benzer infected strain...
Match Column A with Column B 1) Guarantor of another's debt primary wants to benefit him/herself...
Match Column A with Column B 1) Guarantor of another's debt primary wants to benefit him/herself a) Party detrimentally relies on oral promise 2) Contract that cannot be performed within one year b) Indicates a contract between the parties, indicates quantity, and is signed by the party to be charged 3) Promissory estoppel exception c) A promise to pay another's debt, grant of an interest in land, a contract that cannor be performed in one year, and sale of goods...
Match the following column A column B Comment. 1. java.util.Scanner Wrapper 2. length char[] myletters 3....
Match the following column A column B Comment. 1. java.util.Scanner Wrapper 2. length char[] myletters 3. final int x=10; import java.io.* 4. catch ArrayList 5.alpha String Class 6.double Switch 7.inputfile.close(); try 8.remove() Constant 9.default Keyboard Input 10.compare
Using the formulas and codes provided by ACI 318 1. Design a square interior column footing...
Using the formulas and codes provided by ACI 318 1. Design a square interior column footing for a 15-in. square tied interior column that supports a dead load of 160 kips and live load of 180 kips. The column is reinforced with eight # 8 bars, also, the base of the footing is 6 ft below the grade line, the soil weight is 100 lb/ft3, the concrete weight is 150 lb/ft3, f’c = 4,000 psi, fy = 60,000 psi and...
An absorption column operates at 1 atm to separate compound A from air using pure water...
An absorption column operates at 1 atm to separate compound A from air using pure water as solvent. If the concentration of A in the inlet air stream is 900 ppm and the Henry's law constant for A in water is 1000 atm/ppm: a) What is the equilibrium line equation? (** draw on chart and label) If the desired outlet air is to contain 200 ppm compound A: b) What is (L/V)min? (** draw on chart and label) c) If...
Need to replace the 0's in Bid/Ask column with "Bid" and the 1's with "Ask" using...
Need to replace the 0's in Bid/Ask column with "Bid" and the 1's with "Ask" using Python. For line in lines: line = line.replace(",0,","Bid") etc did not work Time,Bid\Ask,Price,Volume 05:08.627012,0,1.16198,10000000.0 05:08.627012,1,1.16232,10000000.0 05:08.627012,0,1.16198,10000000.0 05:12.721536,0,1.16209,1000000.0 05:08.627012,1,1.16232,10000000.0 05:08.627012,0,1.16198,10000000.0 05:12.721536,0,1.16209,1000000.0 05:12.729989,1,1.16218,1000000.0 05:08.627012,1,1.16232,10000000.0 05:08.627012,0,1.16198,10000000.0 05:12.735727,0,1.16208,1000000.0 05:12.729989,1,1.16218,1000000.0 05:08.627012,1,1.16232,10000000.0
1). A mixture of proteins was seperated on a sizing column. one 2ML fraction has two...
1). A mixture of proteins was seperated on a sizing column. one 2ML fraction has two proteins left in it,and the technician wants to run an ion-exchange coloumn. First, he or she has to dialyze it into the appropriate buffer. how much ion-exchange buffer is needed for dialysis? 2). A technician sets up a negatively charged ion-exchange column and puts a small volume of a mixture of the proteins on it. what should happen to positively charged proteins in the...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT