Integrated FT-ICR-MS peptide dataset for the identification of deaminated peptides in marine dissolved organic matter across field and incubation experiments

This dataset contains Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR-MS)–derived molecular assignments and peptide identifications in marine dissolved organic matter. The dataset includes samples from field campaigns (BATS and Harvey) and laboratory incubation experiments, covering a range of environmental conditions. All samples were processed using a consistent analytical workflow and matched against a custom peptide database (included in this dataset) to identify peptide-like molecular formulas, amino acid compositions, and deamination products. The dataset is organized into three components (BATS, Harvey, and Incubation), each containing sample-level peptide matchup files. Additional environmental data are provided where available, including dissolved organic carbon (DOC) measurements for BATS samples and complementary variables for Harvey samples, including amino acid measurements (LAA and DAA).本数据集包含源自傅里叶变换离子回旋共振质谱（Fourier-transform ion cyclotron resonance mass spectrometry, FT-ICR-MS）的分子指派结果与海洋溶解态有机物中的肽段鉴定信息。数据集涵盖来自野外采样航次（BATS与Harvey）及实验室培养实验的样品，覆盖多种环境条件。所有样品均采用统一的分析流程进行处理，并与本数据集附带的定制肽数据库进行匹配，以鉴定类肽分子式、氨基酸组成及脱氨产物。本数据集分为三个模块（BATS、Harvey与Incubation），每个模块均包含样品级肽匹配文件。此外还提供了可用的额外环境数据，包括BATS样品的溶解态有机碳（dissolved organic carbon, DOC）测量数据，以及Harvey样品的补充变量，其中包含氨基酸测量数据（LAA与DAA）。