Chains and heterogens:
PDB Chain Sequences:
>1grfA (A:) acrqepqpqgpppaagavasydylvigggsgglasarraaelgaraavveshklggtcvn vgcvpkkvmwntavhsefmhdhadygfpscegkfnwrvikekrdayvsrlnaiyqnnltk shieiirghaaftsdpkptievsgkkytaphiliatggmpstphesqipgaslgitsdgf fqleelpgrsvivgagyiavemagilsalgsktslmirhdkvlrsfdsmistncteelen agvevlkfsqvkevkktlsglevsmvtavpgrlpvmtmipdvdcllwaigrvpntkdlsl nklgiqtddkghiivdefqntnvkgiyavgdvcgkalltpvaiaagrklahrlfeykeds kldynniptvvfshppigtvgltedeaihkygienvktystsftpmyhavtkrktkcvmk mvcankeekvvgihmqglgcdemlqgfavavkmgatkadfdntvaihptsseelvtlr
>1grfA (A:) vasydylvigggsgglasarraaelgaraavveshklggtcvnvgcvpkkvmwntavhse fmhdhadygfpscegkfnwrvikekrdayvsrlnaiyqnnltkshieiirghaaftsdpk ptievsgkkytaphiliatggmpstphesqipgaslgitsdgffqleelpgrsvivgagy iavemagilsalgsktslmirhdkvlrsfdsmistncteelenagvevlkfsqvkevkkt lsglevsmvtavpgrlpvmtmipdvdcllwaigrvpntkdlslnklgiqtddkghiivde fqntnvkgiyavgdvcgkalltpvaiaagrklahrlfeykedskldynniptvvfshppi gtvgltedeaihkygienvktystsftpmyhavtkrktkcvmkmvcankeekvvgihmqg lgcdemlqgfavavkmgatkadfdntvaihptsseelvtlr