>2a73A (A:) observed residues (from ATOM records)
spmysiitpnilrleseetmvleahdaqgdvpvtvtvhdfpgkklvlssektvltpatnh
mgnvtftipanrernkfvtvqatfgtqvvekvvlvslqsgylfiqtdktiytpgstvlyr
iftvnhkllpvgrtvmvnienpegipvkqdslssqnqlgvlplswdipelvnmgqwkira
yyenspqqvfstefevkeyvlpsfeviveptekfyyiynekglevtitarflygkkvegt
afvifgiqdgeqrislpeslkripiedgsgevvlsrkvlldgvlraedlvgkslyvsatv
ilhsgsdmvqaersgipivtspyqihftktpkyfkpgmpfdlmvfvtnpdgspayrvpva
vqgedtvqsltqgdgvaklsinthpsqkplsitvrtkkqelseaeqatrtmqalpystvg
nsnnylhlsvlrtelrpgetlnvnfllrmdraheakiryytylimnkgrllkagrqvrep
gqdlvvlplsittdfipsfrlvayytligasgqrevvadsvwvdvkdscvgslvvksgqs
edrqpvpgqqmtlkiegdhgarvvlvavdkgvfvlnkknkltqskiwdvvekadigctpg
sgkdyagvfsdagltftsssgqqtaqraelqcpqp