I have been trying to use the getgenbank function to access some nucleotides from NCBI. Whenever I try to do this I get an error that says the key cannot be found in the database at this time. I have also tried doing this in the sequence viewer where it also does not work. However, in the sequence viewer I can access data from the European Nucleotide Archive. I assume that this error is caused by matlab not supporting the latest format of the NCBI database but I am not sure.