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File:Phytate.svg

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Summary

Description
English: Chemcial structure of phytate, also known as inositol hexakisphosphate (IP6).

Protonation

The pKa value of the second deprotonation of single-phosphorylated carbohydrate(-like) molecules is somewhere around 6 (see pKa data compiled by Williams). In this case, I'd expect the pKa values of the second deprotonation to increase for each phosphate group, as electrostatic interactions may make double-deprotonations of all phosphates less favorable. At a cellular pH of slightly above 7, one would expect some phosphates to be double-deprotonated and some to be single-deprotonated. To make things less complicated, I decided to show all phosphates in their single-deprotonated form, although that's probably not accurate at cellular pH.
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Author Hbf878
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inception

10 August 2018

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Date/TimeThumbnailDimensionsUserComment
current16:29, 25 November 2018Thumbnail for version as of 16:29, 25 November 2018512 × 524 (15 KB)Hbf878Corrected double bond layout.
16:49, 10 August 2018Thumbnail for version as of 16:49, 10 August 2018512 × 524 (19 KB)Hbf878User created page with UploadWizard

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