An enzyme question

Discussion of all aspects of cellular structure, physiology and communication.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
lil_wend
Garter
Garter
Posts: 5
Joined: Wed Oct 25, 2006 9:01 pm

An enzyme question

Post by lil_wend » Wed Nov 08, 2006 9:49 pm

On the basis of the active site, why would the following conditions speed a chemical reaction with
More substrate? :?:

User avatar
Poison
Inland Taipan
Inland Taipan
Posts: 2322
Joined: Sun Jan 02, 2005 12:44 pm
Location: Turkey

Post by Poison » Wed Nov 08, 2006 10:10 pm

more binding (speeds it up to a point)
It matters not how strait the gate
How charged with punishment the scroll
I am the Master of my fate
I am the Captain of my soul.

Kayleigh
Garter
Garter
Posts: 1
Joined: Thu Dec 07, 2006 5:19 pm

Re: An enzyme question

Post by Kayleigh » Thu Dec 07, 2006 5:25 pm

lil_wend wrote:On the basis of the active site, why would the following conditions speed a chemical reaction with
More substrate? :?:


If there is more substrate, then there are more molecules moving around and therefore more chance of collisions and the substrate binding with the active site. This rule works under any enzyme circumstances unless the question states that there are a limited amout of active sites. If there are 20 active sites and 40 substrates, then at any one time only 20 active sites can be occupied, and 40 substrates will be useless until they collide with a vacant active site.Ideally, there are the same number of substrates as there are active sites. :lol:

sdekivit
King Cobra
King Cobra
Posts: 586
Joined: Sat Jul 30, 2005 7:16 pm
Location: holland
Contact:

Post by sdekivit » Sat Dec 09, 2006 9:55 pm

when [S] > active sites, the enzyme is completely saturated and V = Vmax

nerd
Garter
Garter
Posts: 6
Joined: Mon Dec 11, 2006 3:06 am
Location: Ontario, Canada

Post by nerd » Mon Dec 11, 2006 1:44 pm

More S = more successful collisions.
Successful collisions are those that could bind with enzyme.

sdekivit
King Cobra
King Cobra
Posts: 586
Joined: Sat Jul 30, 2005 7:16 pm
Location: holland
Contact:

Post by sdekivit » Fri Dec 15, 2006 4:59 pm

nerd wrote:More S = more successful collisions.
Successful collisions are those that could bind with enzyme.


depends on whether the enzyme is elastic or not. If the enzyme is inelastic, a rise in substrate concentration won't have any effect on the flux of the reaction.

Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests