Chains and heterogens:
PDB Chain Sequences:
>1b7eA (A:) saeairkagamqtvklaqefpellaiedttslsyrhqvaeelgklgsiqdksrgwwvhsv llleattfrtvgllhqewwmrpddpadadekesgkwlaaaatsrlrmgsmmsnviavcdr eadihaylqdklahnerfvvrskhprkdvesglylydhlknqpelggyqisipqkgvvdk rgkrknrparkaslslrsgritlkqgnitlnavlaeeinppkgetplkwllltsepvesl aqalrvidiythrwrieefhkawktgagaerqrmeepdnlermvsilsfvavrllqlres ftlpqalraqgllkeaehvesqsaetvltpdecqllgyldkgkrkrkekgslqwaymaia rlggfmdskrtgiaswgalwegwealqskldgflaakdlmaq
>1b7eA (A:) saeairkagamqtvklaqefpellaiedttslsyrwwvhsvllleattfrtvgllhqeww mrpddpadadekesgkwlaaaatsrlrmgsmmsnviavcdreadihaylqdklahnerfv vrskhprkdvesglylydhlknqpelggyqisipqkgvrparkaslslrsgritlkqgni tlnavlaeeinppkgetplkwllltsepveslaqalrvidiythrwrieefhkawktgag aerqrmpdnlermvsilsfvavrllqlresftlpqalraqgllkeaehvesqsaetvltp decqllgyldkgkrkrkekgslqwaymaiarlggfmdskrtgiaswgalwegwealqskl dgflaakdlmaq