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SEQUENCE SPECIFICITY OF QUINOXALINE ANTIBIOTICS. 1. SOLUTION STRUCTURE OF A 1:1 COMPLEX BETWEEN TRIOSTIN A AND [D(GACGTC)]2 AND COMPARISON WITH THE SOLUTION STRUCTURE OF THE [N-MECYS3, N-MECYS7]TANDEM-[D(GATATC)]2 COMPLEX
SOLUTION NMR
NMR Refinement
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Software
DISTANCE GEOMETRY, MOLECULAR DYNAMICS
NUMBER OF ATOMS PRESENT IN ENTRY. NUMBER OF PROTEIN ATOMS 328 NUMBER OF NUCLEIC ACID ATOMS 48 NUMBER OF SOLVENT ATOMS 240 NUMBER OF HETEROGEN ATOMS 40 AVERAGE PAIRWISE RMSD BOND DISTANCES FOR HEAVY ATOM POSITIONS FOR 5 STRUCTURES: 1.37 ANGSTROMS.
X-PLOR
NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number
5
Additional NMR Experimental Information
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TRIOSTIN A CONTAINS TWO PLANAR AROMATIC QUINOXALINE RINGS THAT ARE COVALENTLY ATTACHED TO A CYCLIC OCTADEPSIPEPTIDE RING REPRESENTED BY CHAINS A AND B IN THIS ENTRY. THERE IS A DISULFIDE BRIDGE LINKING CYS A 4 TO CYS B 9. BOTH CYS AND VAL RESIDUES CONTAIN METHYLATED AMIDE NITROGENS; THE TWO D-SER RESIDUES ARE AMIDE BONDED TO THE TWO QUINOXALINE RINGS.