Use SeqIO to extract sequence from chromosome
Use SeqIO to extract sequence from chromosome

Previous attempts either put the whole chromosome as the sequence for a 
given RNA (hence memory blow up) or use the 'wrong' fasta file to get 
the sequence after processing. This way includes the introns in the 
transcript, which I think is what we want

RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline