USING ANNOTATED PEPTIDE MASS SPECTRUM LIBRARIES FOR PROTEIN IDENTIFICATION

该子项目是利用 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得主要资金， 因此可以在其他CRISP条目中表示。列出的机构是 中心，不一定是研究者的机构。 描述了一种用于创建用相应肽序列注释的串联质谱库的系统。该系统基于全球蛋白质组机器数据库（GPMDB）中当前可用的注释谱。通过将用相同肽序列、序列修饰和母体离子电荷注释的光谱一起平均化来创建文库光谱。构建文库，以便将实验肽串联质谱与文库中的肽串联质谱进行比较，从而基于对实验光谱与文库内容物的相似性进行评分来鉴定肽序列。构建了执行这种类型的文库搜索的软件实现，并成功地用于获得序列鉴定。智人、小家鼠和酿酒酵母蛋白质组的注释串联质谱文库和搜索软件可供其他研究组下载和使用。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. A system for creating a library of tandem mass spectra annotated with corresponding peptide sequences was described. This system was based on the annotated spectra currently available in the Global Proteome Machine Database (GPMDB). The library spectra were created by averaging together spectra that were annotated with the same peptide sequence, sequence modifications, and parent ion charge. The library was constructed so that experimental peptide tandem mass spectra could be compared with those in the library, resulting in a peptide sequence identification based on scoring the similarity of the experimental spectrum with the contents of the library. A software implementation that performs this type of library search was constructed and successfully used to obtain sequence identifications. The annotated tandem mass spectrum libraries for the Homo sapiens, Mus musculus, and Saccharomyces cerevisiae proteomes and search software were made available for download and use by other groups.