Input requirements
                    Mash search: maximal file size of 500.0 MB
BLASTn/tBLASTn search: sequence length of 100 - 5000 bp, max. 10 sequences, unique and non-empty IDs, sequence alphabet GATCRYWSMKHBVDN or ACDEFGHIKLMNPQRSTVWYBXZJUO
                    
                     FASTA file is checked upon submission.
                    
                     For BLASTn search, the uploaded FASTA is filtered to remove any sequence record not fulfilling the above requirements.