Chains and heterogens:
PDB Chain Sequences:
>1zgaA (A:) seeselyhaqihlykhvynfvssmalksamelgiadaihnhgkpmtlselasslklhpsk vnilhrflrllthngffaktivkgkegdeeeeiaysltppskllisgkptclssivkgal hpssldmwssskkwfnedkeqtlfecatgesfwdflnkdsesstlsmfqdamasdsrmfk lvlqenkrvfegleslvdvgggtggvtkliheifphlkctvfdqpqvvgnltgnenlnfv ggdmfksipsadavllkwvlhdwndeqslkilknskeaishkgkdgkviiidisidetsd drgltelqldydlvmltmflgkertkqewekliydagfssykitpisgfkslievyp