>3sm4B (B:) observed residues (from ATOM records)
shmtpdiilqrtgidvraveqgddawhklrlgvitasevhnviakprsgkkwpdmkmsyf
htllaevctgvapevnakalawgkqyendartlfeftsgvnvtespiiyrdesmrtacsp
dglcsdgnglelacpftsrdfmkfrlggfeaiksaymaqvqysmwvtrknawyfanydpr
mkreglhyvvierdekymasfdeivpefiekmdealaeigfvfgeqwr