>1a7lB (B:) observed residues (from ATOM records)
egklviwingdkgynglaevgkkfekdtgikvtvehpdkleekfpqvaatgdgpdiifwa
hdrfggyaqsgllaeitpdkafqdklypftwdavryngkliaypiavealsliynkdllp
nppktweeipaldkelkakgksalmfnlqepyftwpliaadggyafkyengkydikdvgv
dnagakagltflvdliknkhmnadtdysiaeaafnkgetamtingpwawsnidtskvnyg
vtvlptfkgqpskpfvgvlsaginaaspnkelakeflenylltdegleavnkdkplgava
lksyeeelakdpriaatmenaqkgeimpnipqmsafwyavrtavinaasgrqtvdealkd
gsqdprvrglyf