1. Development of enzyme technology and enzyme engineering in China

   • Zhang Shuzheng
   • Xu Jiali

   Review Article Pages: 417 - 430

2. Recycling of NADP⁺ using immobilizedE. coli and glucose-6-phosphate dehydrogenase

   • E. Chave
   • E. Adamowicz
   • C. Burstein

   Original Articles Pages: 431 - 441

3. Biotinyl-Glucose-6-Phosphate Dehydrogenase Preparation, Kinetics, and Modulation by Avidin

   • That T. Ngo
   • Howard M. Lenhoff
   • Jeanne Ivy

   Original Articles Pages: 443 - 454

4. Inhibition of cellulases by impurities in Steam-Exploded wood

   • A. P. Sinitsyn
   • L. S. Clesceri
   • H. R. Bungay

   Original Articles Pages: 455 - 458

5. Immunoenzymatic determination of antibody-bound soluble antigens ofTrypanosoma cruzi

   • A. Marcipar
   • S. Barnes
   • G. Broun

   Original Articles Pages: 459 - 462

6. Properties of bacterial luciferase/NADH : FMN oxidoreductase and firefly luciferase immobilized onto sepharose

   • Gabriele K. Wienhausen
   • Larry J. Kricka
   • Marlene DeLuca

   Original Articles Pages: 463 - 473

7. Molar absorptivity and A _{1 cm} ^1% values for proteins at selected wavelengths of the ultraviolet and visible regions. XXII

   • Donald M. Kirschenbaum

   Original Articles Pages: 475 - 495

8. Patents and literature

   • J. A. Smith
   • S. J. Luenser
   • T. Tsuchida

   OriginalPaper Pages: 497 - 510

9. Trends in the Biology of Fermentations for Fuels and Chemicals

   • Ralph Messing

   Book review Pages: 511 - 512

10. Announcement

    Announcement Pages: 513 - 513