>1r52A (A:) observed residues (from ATOM records)
mstfgklfrvttygeshcksvgcivdgvppgmslteadiqpqltrrrdrveiqsgtefgk
tlgtpiammiketigrvasgaiaekflaqnsnveivafvtqigeikmnrdsfdpefqhll
ntitrekvdsmgpircpdasvaglmvkeiekyrgnkdsiggvvtcvvrnlptglgepcfd
kleamlahamlsipaskgfeigsgfqgvsvpgskhndpfyftktnnsggvqggisngeni
yfsvpfksvrhdpavtpraipiveamtalvladalliqkardf