Chains and heterogens:
PDB Chain Sequences:
>1n45A (A:) merpqpdsmpqdlsealkeatkevhtqaenaefmrnfqkgqvtrdgfklvmaslyhiyva leeeiernkespvfapvyfpeelhrkaaleqdlafwygprwqevipytpamqryvkrlhe vgrtepellvahaytrylgdlsggqvlkkiaqkaldlpssgeglafftfpniasatkfkq lyrsrmnslemtpavrqrvieeaktafllniqlfeelqellthdtkdqspsra
>1n45A (A:) pqdlsealkeatkevhtqaenaefmrnfqkgqvtrdgfklvmaslyhiyvaleeeiernk espvfapvyfpeelhrkaaleqdlafwygprwqevipytpamqryvkrlhevgrtepell vahaytrylgdlsggqvlkkiaqkaldlpssgeglafftfpniasatkfkqlyrsrmnsl emtpavrqrvieeaktafllniqlfeelqellth
>1n45B (B:) merpqpdsmpqdlsealkeatkevhtqaenaefmrnfqkgqvtrdgfklvmaslyhiyva leeeiernkespvfapvyfpeelhrkaaleqdlafwygprwqevipytpamqryvkrlhe vgrtepellvahaytrylgdlsggqvlkkiaqkaldlpssgeglafftfpniasatkfkq lyrsrmnslemtpavrqrvieeaktafllniqlfeelqellthdtkdqspsra
>1n45B (B:) pqdlsealkeatkevhtqaenaefmrnfqkgqvtrdgfklvmaslyhiyvaleeeiernk espvfapvyfpeelhrkaaleqdlafwygprwqevipytpamqryvkrlhevgrtepell vahaytrylgdlsggqvlkkiaqkaldlpssgeglafftfpniasatkfkqlyrsrmnsl emtpavrqrvieeaktafllniqlfeelqellth