从单词前的字符串中删除字符(在 R 中)

Question

我是这个社区的新人，我想问这个(我没有找到任何可以帮助我的问题)。

我有这个字符串:

{name:GTP hydrolysis and joining of the 60S ribosomal subunit,description:Hydrolysis of eIF2-GTP occurs after the Met-tRNAi has recognized the AUG. This reaction is catalyzed by eIF5 (or eIF5B) and is thought to cause dissociation of all other initiation factors and allow joining of the large 60S ribosomal subunit. The 60S subunit joins - a reaction catalyzed by eIF5 or eIF5B - resulting in a translation-competent 80S ribosome. Following 60S subunit joining, eIF5B hydrolyzes its GTP and is released from the 80S ribosome, which is now ready to start elongating the polypeptide chain.,url:https://reactome.org/PathwayBrowser/#/R-HSA-72706,sameAs:null,version:62,keywords:[Pathway],creator:[],includedInDataCatalog:{url:https://reactome.org,name:Reactome,@type:DataCatalog},distribution:[{contentUrl:https://reactome.org/ContentService/exporter/sbml/72706.xml,fileFormat:SBML,@type:DataDownload},{contentUrl:https://reactome.org/ReactomeRESTfulAPI/RESTfulWS/sbgnExporter/72706,fileFor... <truncated>

这很乱，我想删除单词描述之前的所有字符。所以它最终会像这样:

description:Hydrolysis of eIF2-GTP occurs after the Met-tRNAi has recognized the AUG. This reaction is catalyzed by eIF5 (or eIF5B) and is thought to cause dissociation of all other initiation factors and allow joining of the large 60S ribosomal subunit. The 60S subunit joins - a reaction catalyzed by eIF5 or eIF5B - resulting in a translation-competent 80S ribosome. Following 60S subunit joining, eIF5B hydrolyzes its GTP and is released from the 80S ribosome, which is now ready to start elongating the polypeptide chain.,url:https://reactome.org/PathwayBrowser/#/R-HSA-72706,sameAs:null,version:62,keywords:[Pathway],creator:[],includedInDataCatalog:{url:https://reactome.org,name:Reactome,@type:DataCatalog},distribution:[{contentUrl:https://reactome.org/ContentService/exporter/sbml/72706.xml,fileFormat:SBML,@type:DataDownload},{contentUrl:https://reactome.org/ReactomeRESTfulAPI/RESTfulWS/sbgnExporter/72706,fileFor... <truncated>

提前致谢!

Answer 1

您应该使用正则表达式方法，这样您就可以处理不同数量的前导字符:

a <- "{name:GTP hydrolysis and joining of the 60S ribosomal subunit,description:Hydrolysis of eIF2-GTP occurs after the Met-tRNAi has recognized the AUG. This reaction is catalyzed by eIF5 (or eIF5B) and is thought to cause dissociation of all other initiation factors and allow joining of the large 60S ribosomal subunit. The 60S subunit joins - a reaction catalyzed by eIF5 or eIF5B - resulting in a translation-competent 80S ribosome. Following 60S subunit joining, eIF5B hydrolyzes its GTP and is released from the 80S ribosome, which is now ready to start elongating the polypeptide chain.,url:https://reactome.org/PathwayBrowser/#/R-HSA-72706,sameAs:null,version:62,keywords:[Pathway],creator:[],includedInDataCatalog:{url:https://reactome.org,name:Reactome,@type:DataCatalog},distribution:[{contentUrl:https://reactome.org/ContentService/exporter/sbml/72706.xml,fileFormat:SBML,@type:DataDownload},{contentUrl:https://reactome.org/ReactomeRESTfulAPI/RESTfulWS/sbgnExporter/72706,fileFor..."

gsub('(.*)description:','', a)