import re
exon = list()
res = [
'NVAKMFPQRKFT<STOP>TVQTLMRNGTLLERG<STOP>CCEVSP',
'QKRMDCNASV<STOP>TVTVQTLMQTL<STOP>TNTPKGG<STOP>',
'MEKGYADAE<STOP>RKTF<STOP>MTVRAGCCGI<STOP>MK'
]
for seq in res:
exon.append(re.findall(r"(M.{2,}?)<STOP>", seq))
print(exon)
aW1wb3J0IHJlCgpleG9uID0gbGlzdCgpCnJlcyA9IFsKICAgICAnTlZBS01GUFFSS0ZUPFNUT1A+VFZRVExNUk5HVExMRVJHPFNUT1A+Q0NFVlNQJywKICAgICAnUUtSTURDTkFTVjxTVE9QPlRWVFZRVExNUVRMPFNUT1A+VE5UUEtHRzxTVE9QPicsCiAgICAgJ01FS0dZQURBRTxTVE9QPlJLVEY8U1RPUD5NVFZSQUdDQ0dJPFNUT1A+TUsnCl0KCmZvciBzZXEgaW4gcmVzOgoJZXhvbi5hcHBlbmQocmUuZmluZGFsbChyIihNLnsyLH0/KTxTVE9QPiIsIHNlcSkpCgkKcHJpbnQoZXhvbik=