[BiO BB] Reaction with missing EC number?
dmb at mrc-dunn.cam.ac.uk
Tue Oct 11 13:37:30 EDT 2005
Hi, looking at Kegg (Ligand) I find the following reaction...
L-Alanine + Acetyl-CoA <=> 2-Amino-4-oxopentanoic acid + CoA
However, the EC number for this reaction appears to be "EC 2.3.1.-",
i.e. not a proper EC number. The weird thing is that this EC number *is*
used in the Kegg Valine, leucine and isoleucine degradation pathway.
I thought one way that this could come about is if the reaction itself
hasn't yet been assigned an EC number but is otherwise OK, and is used
with the 'temporary/approximate' EC number in place of the yet to be
assigned (correct) one.
Anybody know if that is correct?
Seems strange to see an approximate EC number in a step of a pathway
with known inputs and outputs. Although looking at the data it doesn't
appear to be uncommon.
Anyone have any information on the use of these approximate numbers at KEGG?
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