SAKURA is a nucleotide sequence data submission system through the WWW server at DDBJ.The input of the fax number changed to “Mandatory(Marked with )” on 15 August 2011. You can’t proceed further if you fail to fill up any one of the fields.Generally, DDBJ contacts submitters via E-mail. However, in case of breakdown of communication via E-mail by any reason, DDBJ would contact submitters via fax.So, please let us know your fax number, if possible.Please choose “If you do not have any fax machine, please check it.” if you do not have the fax.Thank you for your understanding and cooperation.