Chains and heterogens:
PDB Chain Sequences:
>7kxqA (A:) lgygsweidpkdltflkelgtgqfgvvkygkwrgqydvaikmikegsmsedefieeakvm mnlsheklvqlygvctkqrpifiiteymangcllnylremrhrfqtqqllemckdvceam eyleskqflhrdlaarnclvndqgvvkvsdfglsryvlddeytssvgskfpvrwsppevl myskfssksdiwafgvlmweiyslgkmpyerftnsetaehiaqglrlyrphlasekvyti myscwhekaderptfkillsnildvmdees