Chains and heterogens:
PDB Chain Sequences:
>3rrmA (A:) gamaksfdelglapellkgiyamkfqkpskiqeralplllhnpprnmiaqsqsgtgktaa fsltmltrvnpedaspqaiclapsrelarqtlevvqemgkftkitsqlivpdsfeknkqi naqvivgtpgtvldlmrrklmqlqkikifvldeadnmldqqglgdqcirvkrflpkdtql vlfsatfadavrqyakkivpnantlelqtnevnvdaikqlymdckneadkfdvltelygv mtigssiifvatkktanvlygklkseghevsilhgdlqtqerdrliddfregrskvlitt nvlargidiptvsmvvnydlptlangqadpatyihrigrtgrfgrkgvaisfvhdknsfn ilsaiqkyfgdiemtrvptddwdevekivkkvlkd
>3rrmA (A:) glapellkgiyamkfqkpskiqeralplllhnpprnmiaqsqsgtgktaafsltmltrvn pedaspqaiclapsrelarqtlevvqemgkftkitsqlivpdsfeknkqinaqvivgtpg tvldlmrrklmqlqkikifvldeadnmldqqglgdqcirvkrflpkdtqlvlfsatfada vrqyakkivpnantlelvnvdaikqlymdckneadkfdvltelygvmtigssiifvatkk tanvlygklkseghevsilhgdlqtqerdrliddfregrskvlittndiptvsmvvnydl ptlangqadpatyihrigrtgrfgrkgvaisfvhdknsfnilsaiqkyfgdiemtrvptd dwdevekivkkvlkd
>3rrmC (C:) gasslkdevptetsedfgfkflgqkqilpsfneklpfaslqnldisnskslfvaasgska vvgelqllrdhitsdstpltfkwekeipdvifvcfhgdqvlvstrnalysldleelsefr tvtsfekpvfqlknvnntlvilnsvndlsaldlrtkstkqlaqnvtsfdvtnsqlavllk drsfqsfawrngemekqfefslpseleelpveeysplsvtilspqdflavfgnvisetdd evsydqkmyiikhidgsasfqetfditppfgqivrfpymykvtlsgliepdanvnvlass cssevsiwdskqviepsqdseravlpiseetdkdtnpigvavdvvtsgtilepcsgvdti erlplvyilnnegslqivglfhvaaiks
>3rrmC (C:) gasslkdevptetsedfgfkflgqkqilpsfneklpfaslqnldisnskslfvaasgska vvgelqllrdhitsdstpltfkwekeipdvifvcfhgdqvlvstrnalysldleelsefr tvtsfekpvfqlknvnntlvilnsvndlsaldlrtkstkqlaqnvtsfdvtnsqlavllk drsfqsfawrngemekqfefslpseleelpveeysplsvtilspqdflavfgnvisetdd evsydqkmyiikhidgsasfqetfditppfgqivrfpymykvtlsgliepdanvnvlass cssevsiwdskqviepsqdseravlpiseetdkdtnpigvavdvvtsgtrlplvyilnne gslqivglfh