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For the chemist attempting to elucidate a chemical structure, the N chemical shift is a sensitive probe of the nitrogen environment. For the purpose of structure verification, a common approach is to review the literature for related species and use their chemical shifts and couplings as models to allow estimates of these properties for the new species. While there are a number of texts, reviews, and publications available that have brought together the spectral properties of tens to hundreds of molecules, these paper-based collections are cumbersome to use when it comes to searching for a particular chemical shift or a chemical structure or... 

PeroxyBase The peroxidase database Curated collection of haem and non haem peroxidases from all species text and sequence search cellular localization, tissue types, inducers, and repressor peroxibase.isb-sib.ch... 

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