 CREATE TABLE dna (
 
   seq_region_id       INT(10) UNSIGNED NOT NULL,
-  sequence            MEDIUMTEXT NOT NULL,
+  sequence            LONGTEXT NOT NULL,
 
   PRIMARY KEY (seq_region_id)
 

  coord_system_id             INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  species_id                  INT(10) UNSIGNED NOT NULL DEFAULT 1,
  name                        VARCHAR(40) NOT NULL,
  version                     VARCHAR(40) DEFAULT NULL,
  rank                        INT NOT NULL,
  attrib                      SET('default_version', 'sequence_level'),


  program                     VARCHAR(80),
  program_version             VARCHAR(40),
  program_file                VARCHAR(80),
  parameters                  TEXT,
  module                      VARCHAR(80),
  module_version              VARCHAR(40),
  gff_source                  VARCHAR(40),
