>>1BBR:HELIX   18  18 ALA N   55  CYS N   58  5                                   4    
AAHC
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HELIX 18 18 ALA N 55 CYS N 58 5 4 ATOM 5531 N ALA N 55 45.322 7.571 12.700 1.00 16.60 N ATOM 5532 CA ALA N 55 45.486 7.611 14.156 1.00 15.78 C ATOM 5533 C ALA N 55 45.814 6.228 14.674 1.00 14.59 C ATOM 5534 O ALA N 55 45.076 5.305 14.240 1.00 17.39 O ATOM 5535 CB ALA N 55 44.135 8.029 14.826 1.00 13.09 C ATOM 5536 N ALA N 56 46.780 6.049 15.524 1.00 14.14 N ATOM 5537 CA ALA N 56 47.071 4.737 16.099 1.00 13.82 C ATOM 5538 C ALA N 56 45.838 4.082 16.684 1.00 14.12 C ATOM 5539 O ALA N 56 45.702 2.847 16.487 1.00 19.45 O ATOM 5540 CB ALA N 56 48.145 4.862 17.174 1.00 14.68 C ATOM 5541 N HIS N 57 44.925 4.737 17.344 1.00 15.31 N ATOM 5542 CA HIS N 57 43.708 4.097 17.948 1.00 12.54 C ATOM 5543 C HIS N 57 42.826 3.424 16.941 1.00 14.33 C ATOM 5544 O HIS N 57 41.873 2.644 17.280 1.00 14.87 O ATOM 5545 CB HIS N 57 42.868 5.045 18.766 1.00 10.99 C ATOM 5546 CG HIS N 57 41.904 5.937 18.089 1.00 7.42 C ATOM 5547 ND1 HIS N 57 42.143 7.262 17.732 1.00 2.50 N ATOM 5548 CD2 HIS N 57 40.618 5.674 17.739 1.00 7.28 C ATOM 5549 CE1 HIS N 57 41.100 7.732 17.190 1.00 4.42 C ATOM 5550 NE2 HIS N 57 40.115 6.828 17.180 1.00 6.02 N ATOM 5551 N CYS N 58 43.120 3.684 15.681 1.00 15.87 N ATOM 5552 CA CYS N 58 42.359 3.028 14.603 1.00 19.06 C ATOM 5553 C CYS N 58 42.753 1.549 14.484 1.00 21.42 C ATOM 5554 O CYS N 58 41.898 0.741 14.126 1.00 19.79 O ATOM 5555 CB CYS N 58 42.578 3.781 13.280 1.00 19.64 C ATOM 5556 SG CYS N 58 41.480 5.181 13.208 1.00 18.94 S