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. 2017 Jun 26;26(9):1773–1784. doi: 10.1002/pro.3213

Figure 4.

Figure 4

Decreased amount of Hsp21 in chloroplast stroma in heat‐stressed plants. Mass spectra are shown for three Hsp21 peptides (NGVLFTIPK charge 2+, LTMDVSPGLLDPLSPMR charge 2+, LTMDVSPGLLDPLSPMR charge 3+) detected in stroma samples with 1:1 mix of control (14N) and heat‐stressed plants (15N), showing a decreased proportion of the 15N‐peaks compared to 14N‐peaks indicating that the amount of Hsp21 in the soluble stroma is lower in the heat‐stressed compared to control plants. The quantification of the amount of Hsp21 in stroma and thylakoid membranes is shown as L/H‐ratios in Table III.