Dancus carota

Plant pectin heparinium Dancus carota 1GQ8 1.75 et al. (1999) Johansson... 

The cell wall is a structure rich in compounds with a cis-diol configuration. On the other hand, it has been found that B is a predominant element in this structure, principally under deficiency conditions [118]. It has been estimated that the B present in the cell wall represents roughly 96% of the total of cellular B in carrots (Dancus carota) [119]. In tobacco cells, the B in the cell wall reportedly makes up 90% of the total B in the cell with deficient levels and 60% with normal (or adequate) levels of this micronutrient [119]. 

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