>1pv4B (B:) observed residues (from ATOM records)
gdgvleilqdgfgflrsadssylagpddiyvspsqirrfnlrtgdtisgkirppkegery
fallkvnevnfdkpennkilfenltplhansrlrmgstedltarvldlaspigrgqrgli
vappkagktmllqniaqsiaynhpdcvlmvlliderpeevtemqrlvkgevvastfdepa
srhvqvaemviekakrlvehkkdviilldsitrlarayntvvpavltggvdanalhrpkr
ffgaarnveeggsltiiatalidtgskmdeviyeefkgtgnmelhlsrkiaekrvfpaid
ynrsgtrkeellttqeelqkmwilrkiihpmgeidameflinklamtktnddffemmk