Chains and heterogens:
PDB Chain Sequences:
>4grtA (A:) vasydylvigggsgglesawraaelgaraavveshklggtcvnvgcvpkkvmwntavhse fmhdhadygfpscegkfnwrvikekrdayvsrlnaiyqnnltkshieiirghaaftsdpk ptievsgkkytaphiliatggmpstphesqipgaslgitsdgffqleelpgrsvivgagy iavemagilsalgsktslmirhdkvlrsfdsmistncteelenagvevlkfsqvkevkkt lsglevsmvtavpgrlpvmtmipdvdcllwaigrvpntkdlslnklgiqtddkghiivde fqntnvkgiyavgdvcgkalltpvaiaagrklahrlfeykedskldynniptvvfshppi gtvgltedeaihkygienvktystsftpmyhavtkrktkcvmkmvcankeekvvgihmqg lgcdemlqgfavavkmgatkadfdntvaihptsseelvtlr