small acidic protein 1 Encodes a small acid protein (SMAP1) that mediates responses Arabidopsis root to the synthetic auxin 2%2C4-Dichlorophenoxyacetic acid. small acidic protein 1 (SMAP1)%3B BEST Arabidopsis thaliana protein match is: small acidic protein 2 (TAIR:AT3G24280.1)%3B Has 30201 Blast hits to 17322 proteins in 780 species: Archae - 12%3B Bacteria - 1396%3B Metazoa - 17338%3B Fungi - 3422%3B Plants - 5037%3B Viruses - 0%3B Other Eukaryotes - 2996 (source: NCBI BLink).