>3kpaB (B:) observed residues (from ATOM records)
svkesvsripllktkagprdgdkwtarlkeeyaslityvehnkasdshwfhlesnpqgtr
wygtcwtyyknekyefemnfdipvtypqappeialpelegktvkmyrggkicmtthffpl
warnvpyfgishvlalglgpwlsievpamveegylkp