The enzyme β-methylaspartase catalyzes the deamination of β-methylaspartate. For this aspartate reaction in the presence of the inhibitor hydroxymethylaspartate (3.8 M), determine KM and whether the inhibition is competitive or noncompetitive (KI = 1.0 M). In the ABSENCE of inhibitor: The Lineweaver-Burke equation is 1V=1V= __________ (1[S])(1[S]) + __________, and the KM is __________ M.  In the PRESENCE of inhibitor: The Lineweaver-Burke equation is 1V=1V= ____________ (1[S])(1[S]) + ___________, and the KM is ___________ M.  The type of inhibition is ____________. Round-off all answers to two (2) significant figures.

Curren'S Math For Meds: Dosages & Sol
11th Edition
ISBN:9781305143531
Author:CURREN
Publisher:CURREN
Chapter9: Parenteral Medication Labels And Dosage Calculation
Section: Chapter Questions
Problem 6.5P
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The enzyme β-methylaspartase catalyzes the deamination of β-methylaspartate. For this aspartate reaction in the presence of the inhibitor hydroxymethylaspartate (3.8 M), determine KM and whether the inhibition is competitive or noncompetitive (KI = 1.0 M).


In the ABSENCE of inhibitor:

The Lineweaver-Burke equation is 1V=1V= __________ (1[S])(1[S]) + __________, and the KM is __________ M. 


In the PRESENCE of inhibitor:

The Lineweaver-Burke equation is 1V=1V= ____________ (1[S])(1[S]) + ___________, and the KM is ___________ M. 

The type of inhibition is ____________.

Round-off all answers to two (2) significant figures.

[S], M
V w/o inhibitor, M/s V w/ inhibitor, M/s
1x10-4 0.0259
5x10-4 0.0917
1.5x103 0.136
2.5x10-3 0.150
5x10-3 0.165
0.0098
0.040
0.086
0.120
0.142
Transcribed Image Text:[S], M V w/o inhibitor, M/s V w/ inhibitor, M/s 1x10-4 0.0259 5x10-4 0.0917 1.5x103 0.136 2.5x10-3 0.150 5x10-3 0.165 0.0098 0.040 0.086 0.120 0.142
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