From sycamore

The glycosyl-residue compositions of the three purified fractions (Table 1) were very similar with a predominance of galacturonic acid, rhamnose and arabinose. The presence in the three purified fractions of the rare monosaccharides characteristic of RG-II (e.g. 2-( -methyl-L-fucose, 2-O-methyl-D-xylose, apiose, Kdo, Dha and aceric acid) was confirmed by GC-CIMS analysis. The molar ratios corresponded approximately to the known structure of the RG-II molecule (Figure 1) and to previously published data for RG-II from sycamore [26], rice [4], arabidospis leaves [8] and Pectinol [12]. 

Steijiades, R., Dean, J. F. D., and Eriksson, K.-E. L., 1992, Laccase from sycamore maple (Acer pseudoplatanus) polymerizes monolignols, Plant Physiol. 99 1162-1168. 

Thomber and Northcote have studied the changes in the chemical composition accompanying the differentiation of a cambial cell into xylem and phloem. In phloem from sycamore maple ( Acer pseudoplatanus), the xylan contains twice as many acid side-chains as the xylan in the xylem, whereas exactly the opposite occurs with Scots pine. The glucomannan first deposited in the phloem contains more D-mannose residues than that laid down in the xylem. 

Polysaccharide consisting of ( - 4)- -d-(3alpA-(l - 2)-a-L-Rhap-(l - ) backbone with arabinan and oligogalactosyl side-groups attached at 0-4 of the Rha residues. Interspecies variation is prob. due to side-chain variation. Isol. from xylem-differentiating zones of Crypto-meria japonica and from sycamore Acer pseudoplatanus). Major pectic polysaccharide component of cell walls of dicots and nongraminaceous monocots. 

We have analyzed the polar lipid composition of mitochondria (from both green and non-green tissues), peroxisomes, chloroplasts and non-green plastids. Some experiments have also been performed with isolated cells from sycamore, cultivated in liquid suspension. In this last case, a specific parameter for the culture, i.e. the oxygen content of the medium, has to be taken into account as far as the fatty acid content of the membrane glycerolipids is concerned . 

Isolated from a mixture of. methylated polysaccharides from sycamore (Acer pseudoplatanus) cell walls (45). Isolated from the bark of white willow (Salix alba L.) (70). 

---