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. 1996 Feb 15;314 ( Pt 1)(Pt 1):215-25.
doi: 10.1042/bj3140215.

Inositol phosphates in the duckweed Spirodela polyrhiza L

C A Brearley  1 , D E Hanke
Affiliations

Inositol phosphates in the duckweed Spirodela polyrhiza L

C A Brearley et al. Biochem J. .

Abstract

We have undertaken an analysis of the inositol phosphates of Spirodela polyrhiza at a developmental stage when massive accumulation of InsP6 indicates that a large net synthesis is occurring. We have identified Ins3P, Ins(1,4)P2, Ins(3,4)P2 and possibly Ins(4,6)P2, Ins(3,4,6)P3, Ins(3,4,5,6)P4, Ins (1,3,4,5,6)P5, D- and/or L-Ins(1,2,4,5,6)P5 and InsP6 and revealed the likely presence of a second InsP3 with chromatographic properties similar to Ins(1,4,5)P3. The higher inositol phosphates identified show no obvious direct link to pathways of metabolism of second messengers purported to operate in higher plants, nor do they resemble the immediate products of plant phytase action on InsP6.

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