1. Letter to the Editor: “Natural” Versus Regular Antibodies

   • Carel Jan van Oss

   Letter to the Editor Pages: 357 - 357

2. Response to the Letter from Dr. van Oss

   • Miranda K. Adelman
   • Samuel F. Schluter
   • John J. Marchalonis

   Commentary Pages: 359 - 360

3. Kinetic Study on Conformational Change in a Single Molecular Species, β₃, of β-Conglycinin in an Acidic Ethanol Solution

   • Kazunobu Tsumura
   • Wataru Kugimiya
   • Hideyo Hasumi

   OriginalPaper Pages: 361 - 369

4. Characterization of Toxin Complex Produced by a Unique Strain of Clostridium botulinum Serotype D 4947

   • Kimiko Hasegawa
   • Toshihiro Watanabe
   • Tohru Ohyama

   OriginalPaper Pages: 371 - 378

5. Crystal Structure of the Pig Pancreatic α-Amylase Complexed with ρ-Nitrophenyl-α-D-Maltoside-Flexibility in the Active Site

   • Huanyu Zhuo
   • Françoise Payan
   • Minxie Qian

   OriginalPaper Pages: 379 - 387

6. Thermal and Alkaline Denaturation of Bovine β-Casein

   • Phoebe X. Qi
   • Edward D. Wickham
   • Harold M. Farrell Jr.

   OriginalPaper Pages: 389 - 402

7. Purification and Biochemical Characterization of Asclepain c I from the Latex of Asclepias curassavica L.

   • Constanza Liggieri
   • M. Cecilia Arribére
   • Nora S. Priolo

   OriginalPaper Pages: 403 - 411

8. A Substrate-Phage Approach for Investigating Caspase Specificity

   • Samantha Lien
   • Richard Pastor
   • Henry B. Lowman

   OriginalPaper Pages: 413 - 425

9. Detection of Pairwise Residue Proximity by Covariation Analysis for 3D-Structure Prediction of G-Protein-Coupled Receptors

   • Wataru Nemoto
   • Takashi Imai
   • Norihisa Fujita

   OriginalPaper Pages: 427 - 435