Chains and heterogens:
PDB Chain Sequences:
>1ay1H (H:) evqlqesgpglvkpyqslslsctvtgysitsdyawnwirqfpgnklewmgyitysgttdy npslksrisitrdtsknqfflqlnsvttedtatyycaryyygywyfdvwgqgttltvssa kttapsvyplapvssvtlgclvkgyfpepvtltwnsgslssgvhtfpavlqsdlytlsss vtvtsstwpsqsitcnvahpasstkvdkkiepr
>1ay1L (L:) diqmtqspaimsaspgekvtmtcsasssvsymywyqqkpgssprlliydstnlasgvpvr fsgsgsgtsysltisrmeaedaatyycqqwstypltfgagtklelkradaaptvsifpps seqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstltl tkdeyerhnsytceathktstspivksfnr