>1szrB (B:) observed residues (from ATOM records)
gdpffvadlgdivrkhetwkkclprvtpfyavkcnddwrvlgtlaalgtgfdcasnteiq
rvrgigvppekiiyanpckqishiryardsgvdvmtfdcvdelekvakthpkakmvlris
tkfgakvedcrfileqakklnidvtgvsfhvgsgstdastfaqaisdsrfvfdmgtelgf
nmhildigggfpgtrdaplkfeeiagvinnalekhfppdlkltivaepgryyvasaftla
vnviakavtqsfmyyvndgvygsfncilydhavvrplpqrepklypssvwgptcdgldqi
veryylpemqvgewllfedmgaytvvgtssfngfqsptiyyvvsglpdhvvrel