I downloaded ref_IRGSP-1.0_scaffolds.gff3.gz from ftp://ftp.ncbi.nlm.nih.gov/genomes/Oryza_sativa_Japonica_Group/GFF/. The gff file contains one column of gene=LOC*******. This LOC id when put on google links to an Os id from RAPDB. I need a tool or a website where i can get all the RAPDB or MSU-TIGR ids corresponding the LOC ids mentioned in the gff3 file.