Chains and heterogens:
PDB Chain Sequences:
>1sca_ (-) aqtvpygiplikadkvqaqgfkganvkvavldtgiqashpdlnvvggasfvageayntdg nghgthvagtvaaldnttgvlgvapsvslyavkvlnssgsgsysgivsgiewattngmdv inmslggasgstamkqavdnayargvvvvaaagnsgnsgstntigypakydsviavgavd snsnrasfssvgaelevmapgagvystyptntyatlngtsmasphvagaaalilskhpnl sasqvrnrlsstatylgssfyygkglinveaaaq