Chains and heterogens:
PDB Chain Sequences:
>1qx6A (A:) edkqeranyeklqqkfqmlmskhqahvrpqfeslekinkdivgwiklsgtslnypvlqgk tnhdylnldferehrrkgsifmdfrnelknlnhntilyghhvgdntmfdvledylkqsfy ekhkiiefdnkygkyqlqvfsayktttkdnyirtdfendqdyqqfldetkrksvinsdvn vtvkdrimtlstcedaysettkrivvvakiikvs