Literature summary for 4.4.1.14 extracted from

Tsuchisaka, A.; Theologis, A.
Heterodimeric interactions among the 1-amino-cyclopropane-1-carboxylate synthase polypeptides encoded by the Arabidopsis gene family (2004), Proc. Natl. Acad. Sci. USA, 101, 2275-2280.

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Organism

Organism	UniProt	Comment	Textmining
Arabidopsis sp.	-	-	-

Subunits

Subunits	Comment	Organism
dimer	the Arabidopsis genome encodes nine ACS polypeptides that form eight functional (ACS2, ACS4-9, ACS-11) and one nonfunctional homodimer. Coexpressing the K278A and Y92A mutants of different polypeptides shows that all of them have the capacity to heterodimerize. Functional heterodimers are formed only among gen family members that belong to one or the other of the two phylogenetic branches. It is proposed that heterodimerization enhances the isoenzyme diversity of the ACS gene family and provides physiological versatility by being able to operate in a broad gradient of S-adenosylmethionine concentration in various cells/tussues during plant growth and development. Nonfunctional heterodimerization may also play a regulatory role during the plant life cycle	Arabidopsis sp.

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Release 2023.1 (January 2023)