1. On the depletion and reconstitution of both Q_A and metal in reaction centers of the photosynthetic bacterium Rb. sphaeroides R-26

   • Ben-Li Liu
   • Li-Hua Yang
   • Arnold J. Hoff

   Regular Paper Pages: 51 - 58

2. The chloroplast cytochrome b ₆ f complex can exist in monomeric and dimeric states

   • R. K. Chain
   • R. Malkin

   Regular Paper Pages: 59 - 68

3. Analogues of NADP⁺ as inhibitors and coenzymes for NADP⁺ malic enzyme from maize leaves

   • Claudia P. Spampinato
   • Piotr Paneth
   • Carlos S. Andreo

   Regular Paper Pages: 69 - 76

4. A comparative study of the optical characteristics of intact cells of photosynthetic green sulfur bacteria containing bacteriochlorophyll c, d or e

   • Stephan C. M. Otte
   • Jos C. van der Heiden
   • Jan Amesz

   Regular Paper Pages: 77 - 87

5. Isolation and purification of plastocyanin from spinach stored frozen using hydrophobic interaction and ion-exchange chromatography

   • Hans E. M. Christensen
   • Lars S. Conrad
   • Jens Ulstrup

   Technical Communication Pages: 89 - 93