PREFACE Gerald Litwack 1. INSERTION OF COBALT INTO TETRAPYRROLES J.A. Morris, S. Lickey and M.D. Liptak 2. APPLICATION OF BIOORGANOMETALLIC B12 IN GREEN ORGANIC SYNTHESIS Hisashi Shimakoshi 3. COBAMIDE REMODELING, Amy T. Ma, Daniel S. Kantner and Joris Beld 4. CUBILIN, THE INTRINSIC FACTOR-VITAMIN B12 RECEPTOR Renata Kozyraki, Pierre Verroust and Olivier Cases 5. MEMBRANE TRANSPORT OF COBALAMIN Mark Nijland, Jose Miguel Martinez Felices, Dirk J. Slotboom and Chancievan Thangaratnarajah 6. VITAMIN B12 PHOTORECEPTORS S. Padmanabhan, Ricardo Perez-Castano, Lucia Osete-Alcaraz, Maria Carmen Polanco and Montserrat Elias-Arnanz 7. PHOTOLYTIC PROPERTIES OF B12-DEPENDENT ENZYMES: A THEORETICAL PERSPECTIVE Arghya Pratim Ghosh, Megan J. Toda and Pawel M. Kozlowski 8. ANTIVITAMINS B12 Berhard Krautler 9. VITAMIN B12 ABSORPTION AND MALABSORPTION Jean-Louis Gueant, Rosa-Maria Gueant-Rodriguez and David H. Alpers 10. INTRACELLULAR PROCESSING OF VITAMIN B12 BY MMACHC (CblC) Luciana Hannibal and Donald W. Jacobsen 11. TELOMERE LENGTH AND VITAMIN B12 Guruvaiah Praveen, Mudili Sivaprasad and G. Bhanuprakash Reddy 12. VITAMIN B12 AND CHRONIC KIDNEY DISEASE Henry H.L. Wu and Angela Y.M. Wang 13. INHERITED DEFECTS OF COBALAMIN METABOLISM David Watkins and David S. Rosenblatt 14. BEHAVIORAL PROFILE OF VITAMIN B12 DEFICIENCY: A REFLECTION OF IMPAIRED BRAIN DEVELOPMENT, NEURONAL STRESS AND ALTERED NEOPLASTICITY Gregory Pourie, Jean-Louis Gueant and Edward Quadros 15. VITAMIN B12 DEFICIENCY CAUSES AND CONSEQUENCES Ralph Green and Joshua Miller 16. METABOLISM-MEDIATED THROMBOTIC MICROANGIOPATHY AND B12 Hadi Goubran, Gaafer Ragab and Waleed Sabry 17. NEUROPSYCHIATRIC MANIFESTATIONS IN VITAMIN B12 DEFICIENCY Prashant Sabu, Harish Thippeswamy and Santosh K. Chaturvadi 18. VITAMIN B12 AND PREDATORY BEHAVIOR IN NEMATODES Wen-Sui Lo and Ralf J. Sommer 19. DETERMINATION OF COBALAMIN AND RELATED COMPONDS IN FOODS F. Watanabe, T. Bito and K.