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Comparative Studies of the Thylakoid Proteins of Mesophyll and Bundle Sheath Plastids of Zea mays1

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  • Biology
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Abstract

The proteins from both grana and stroma lamellae of maize (Zea mays) mesophyll plastids and from maize bundle sheath plastid membranes have been compared by electrophoresis in sodium dodecyl sulfate-polyacrylamide gels using a discontinuous buffer system. Peptide differences between grana and stroma lamellae were essentially quantitative and not qualitative. Bundle sheath plastid membrane peptides more closely resembled those of the ultrastructurally similar stroma lamellae. However, bundle sheath membranes contained several peptides not apparent in the stroma lamellae.

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