. The residue masses of these amino acids, and masses of their corresponding immonium ions are given in Table 4.1. Table 4.2. Translation: Amino Acid Codons. Ala GCT Cys TGT His CAT Met ATG Thr ACT GCC TGC CAC ACC GCA Phe TTT ACA GCG Glu GAA Ile ATT TTC ACG GAG ATC Arg CGT ...
The data in this table are for amino acid residues. To calculate the mass of a neutral peptide or protein, sum the residue masses plus the masses of the terminating groups (e.g. H at the N-terminus and OH at the C-terminus). Residue 3- letter code 1- letter code Mono- isotopic ...
Retention times and accurate masses for TBDMS-derivatized amino acids are summarized. Derivatization of amino acids and PTH–amino acids is illustrated and the procedure works well with alanine, valine, threonine, isoleucine, glycine, leucine, proline, serine, aspartic acid, cystine, methionine, ...
The amino acid sequences of two cuttlefish protamine variants Sp1 and Sp2 have been established from automated sequence analysis and mass spectrometry data. Sp1 (57 residues) and Sp2 (56 residues) have molecular masses of 8410 and 8253 Da, respectively. They are almost identical proteins which ...
Elango R, Ball RO, Pencharz PB (2009) Amino acid requirements in humans: with a special emphasis on the metabolic availability of amino acids. Amino Acids. doi:10.1007/s00726-009-0234-y El-Kadi SW, Balwin RL, Sunny NE et al (2006) Intestinal protein supply alters amino acid, but ...
Branched-chain amino acid (BCAA) metabolism fulfills numerous physiological roles and can be harnessed to produce valuable chemicals. However, the lack of eukaryotic biosensors specific for BCAA-derived products has limited the ability to develop high-throughput screens for strain engineering and metaboli...
Many of those MRPs are apparently produced through condensation reactions between the nucleophilic thiol residue and carbonyls as well as oxidative formation of disulphide links resulting in reaction products, which, in this way, cannot be produced by any other proteinogenic amino acid. Further ...
bulbs. Molecular masses of these inhibitors were found to be 7,370.2, 7,472.2, and 7,642.6 Da by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS), respectively. Based on amino acid composition and N-terminal sequence, OTI-1 and -2 are the N-...
Lactobezoars are intragastric masses composed of partially digested milk curd (i.e., casein, fat, and calcium). Rarely seen now, lactobezoars were reported in LBW infants (<2000 g) fed casein-predominant formulas because casein can form large curds when exposed to gastric acid that are difficu...
residue, such as glycine, or a more hydrophobic residue, such as valine, leucine, or isoleucine. Similarly, changes which result in substitution of one negatively charged residue for another, such as aspartic acid for glutamic acid, or one positively charged residue for another, such as lysine ...