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Ion Formula by Mol. Weight Isotope Pattern Calculator Mass Loss Calculator Periodic e-Table
WWW BioTools
EMBL Peptide Search - protein ID from peptide mass and sequence data FindMod - post-translational modifications by peptide mass GlycanMass - oligosaccharide mass from structure GlycoMod - oligosaccharide structures from mass Javascript Protein Digest - peptide digest masses Javascipt Fragment Ion Generator for peptides Mascot Search - peptide mass and sequence tools Mowse - protein identification from peptide MS data Protein Prospector - mass spectra interpretation tools PROWL - identification of proteins from MS data
nucleoside mass
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nucleoside
mass
mono-P
tri-P
RNA
Adenosine (A)
267
347
507
Guanosine (G)
283
363
523
Cytidine (C)
243
323
483
Uridine (U)
244
324
484
DNA
dAdenosine (dA)
251
331
491
dGuanosine (dG)
267
347
507
dCytidine (dC)
227
307
467
dThymidine (dT)
226
306
466
To calculate the mass of a DNA or RNA polymer try the nucleotide mass calculator
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Literature Search
Beilstein Abstracts ChemWeb Current Contents - ISI PubMed - NCBI PubScience - DOE