Talk:Metabolic pathway

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the first external link ( isn't functioning. does someone know where that page has been moved to?

Some Questions[edit]

Is it really necessary to have such a large space between the image and the next section "Cellular respiration". According to whoever added those spaces it was done for a 17" screen. I have a wide-screen computer, does this huge space still exist for anyone else?

Also, what exactly the point of the "Cellular respiration" section, if it is even that. As of now it's just a bolded title. Does the title and text following it refer to 'Metabolic Pathways and Cellular Respiration'? It's tite should be more specific. I'm also not sure that all of the text following the title actually belongs there, considering the fact that Photosynthesis and Chemosynthesis are certainly not processes of Cellular respiration. Does that make them part of a whole new section? Could someone who knows about this topic help figure this out as I am certainly no expert. --France3470 06:16, 7 May 2007 (UTC)

I have removed the huge space.It is not necessary. Shrimp wong (talk) 04:47, 14 February 2008 (UTC)


If "all reactions are chemically reversible," why do charts of metabolic pathways often display arrows that aren't double-ended? I think "all" should be changed to "most." Unfree (talk) 01:12, 30 November 2008 (UTC)

All chemical reactions are reversible but to varying degrees. The threshold where one decides that a reaction is considered irreversible is arbitrary. It might be better to simply say that "all reactions are chemically reversible to varying degrees". --Rhodydog (talk) 19:38, 6 January 2009 (UTC)

Flux Generating Step[edit]

I noticed the phrase "flux generating step" near the start of the article, what exactly is a flux generating step? I think such terms should be defined, unfortunately I've no idea what it is so I can't help. --Rhodydog (talk) 19:39, 6 January 2009 (UTC)


Should there be definitions to distiguish the words pathway, superpathway and map? The word superpathway which features heavily in metacyc and all those who cite it is quite handwaving, hence the question. --Squidonius (talk) 02:21, 29 May 2011 (UTC)

Biochemical pathway[edit]

See my comment in the talk of metabolic network. The two articles are basically overlapping and both slightly wrong. This article does not restrict itself to metabolism, and does not talk only of pathways, a notion that is now attached to directionality. Nowadays, one would talk about metabolic networks and signaling pathways. Sometimes of biochemical pathways/networks. But metabolic pathways is a notion that is fading rapidly because imprecise and slightly wrong (because of directionality). Nicolas Le Novere (talk) 13:16, 16 November 2011 (UTC)

Flux Generating Step[edit]

Top of page: "To initiate another metabolic pathway, called a flux generating step" - There is not such thing as a flux generating step, see Kacser and Burns, 1973 on Control of Flux. Rhodydog (talk) 18:46, 14 May 2014 (UTC)