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Investigation of the active site at the deuterated Schiff-base complex formed between the coenzyme vitamin B-6 and the primary amine
- Authors
- Lee, Min-Hee; Kim, Bo-Ra; Kim, Ho-Tae
- Issue Date
- 17-Jul-2007
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- CHEMICAL PHYSICS LETTERS, v.442, no.4-6, pp 424 - 428
- Pages
- 5
- Journal Title
- CHEMICAL PHYSICS LETTERS
- Volume
- 442
- Number
- 4-6
- Start Page
- 424
- End Page
- 428
- ISSN
- 0009-2614
1873-4448
- Abstract
- The Schiff-base complex ion formed between the vitamin B-6 molecule and the primary amine was investigated by electrospray ionization MS/MS in the gas phase. The two observed fragments at the MS/MS spectrum were different from the normal alkene loss (Onium reaction or McLafferty rearrangement) fragments of immonium ions. The R-CH-ND loss fragment from the 3H/D-deuterated Schiff-base complex ion was observed as one of two fragments in the MS/MS spectrum. The R-CH-ND loss fragment is thought to have originated from the simultaneous effect of a 3-OH functional group and a pyridine ring in the immonium ion. (c) 2007 Elsevier B.V. All rights reserved.
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