mysql> SELECT Symbol FROM gene_info RIGHT JOIN gene2go ON(gene_info.`GeneID`= gene2go.`GeneID`) WHERE GO_Term='proteasome localization'; 
+-------------+
| Symbol      |
+-------------+
| SPBC1734.06 |
| SPBC646.09c |
| cut8        |
| rhp6        |
| SPAC1420.03 |
| SPAC3G6.02  |
| rpn5-b      |
| SPBC19C7.02 |
+-------------+
8 rows in set (2 min 19.11 sec)