I am trying to submit sequences of COX-1 gene(mitochondrial gene) to gene bank. My sequences is almost 100% identical to a published one. It return a message saying that they contain stop codons and that this hinders their publishing. Now, I checked similar seq. from gene bank and they also contains a stop codons ? if this is hindering, how did those one were published ?

Could any one help to explain why is this and how can I deal with this problem ?

Thanks