For faster navigation, this Iframe is preloading the Wikiwand page for Lineweaver-Burkov dijagram.

Lineweaver-Burkov dijagram

Izvor: Wikipedija

U biokemiji, Lineweaver-Burkov dijagram (ili dvostruki recipročni dijagram) je grafički prikaz Lineweaver-Burkove jednadžbe za kinetiku enzima, koju su 1934. otkrili Hans Lineweaver i Dean Burk[1] . Ovaj se dijagram koristi kao grafička metoda za analizu Michaelis-Mentenove jednadžbe:

recipročna jednadžba је

gdje je V brzina reakcije, Km je Michaelis-Mentenova konstanta, Vmax je maksimalna brzina reakcije, a [S] je koncentracija supstrata.

Lineweaver-Burkov dijagram je koristan za brzo određivanje ključnih parametara u kinetici enzima, kao što su Km i Vmax. Segment na y-osi je na primjer jednak recipročnoj vrijednosti Vmax; dok segment na x-osi prikazuje vrijednost -1/Km.

S obzirom da je Lineweaver-Burkov dijagram vrlo osjetljiv na greške u pokusu, smatra se prilično nepouzdanim. U sadašnje se vrijeme više koriste nelinearna regresija ili alternativni oblici Michaelis-Mentenove jednadžbe, kao što je Eadie-Hofstee dijagram[2].

Reference

[uredi | uredi kod]
  1. Lineweaver, H and Burk, D. (1934). „The Determination of Enzyme Dissociation Constants”. Journal of the American Chemical Society 56 (3): 658.–666.. DOI:10.1021/ja01318a036. 
  2. Greco, W. R. and Hakala, M. T., (1979). „Evaluation of methods for estimating the dissociation constant of tight binding enzyme inhibitors,” (PDF). J. Biol. Chem. 254 (23): 12104–12109. PMID 500698. Arhivirano iz originala na datum 2009-03-20. Pristupljeno 2013-12-01. 
{{bottomLinkPreText}} {{bottomLinkText}}
Lineweaver-Burkov dijagram
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?