Chains and heterogens:
PDB Chain Sequences:
>7iceA (A:) etlnggitdmltelanfeknvsqaihkynayrkaasviakyphkiksgaeakklpgvgtk iaekideflatgklrklekirqddtsssinfltrvsgigpsaarkfvdegiktledlrkn edklnhhqriglkyfgdfekripreemlqmqdivlnevkkvdseyiatvcgsfrrgaess gdmdvllthpsftsestkqpkllhqvveqlqkvhfitdtlskgetkfmgvcqlpskndek eyphrridirlipkdqyycgvlyftgsdifnknmrahalekgftineytirplgvtgvag eplpvdsekdifdyiqwkyrepkdrse