THE POLYPEPTIDE CHAIN CONTAINS THREE (3) COPIES OF THE TRAP PROTEIN LINKED IN TANDEM, WHICH ARRANGE THEMSELVES TO MAKE A 12-MER RING IN SOLUTION. EACH CHAIN IN THIS MODEL REPRESENTS ONE COPY OF TRAP, NOT A SEPARATE POLYPEPTIDE. THE LINKER PEPTIDES ARE MAINLY NOT VISIBLE IN THE ELECTRON DENSITY. THE 12MER RINGS ARE ALIGNED WITH THE CRYSTALLOGRAPHIC FOUR-FOLD AXIS. THERE ARE SIX COPIES OF TRAP PRESENT IN THE ASYMMETRIC UNIT. FOR THIS PROTEIN, CALLED T3A7, THE LINKER PEPTIDES CONSIST OF SEVEN (7) ALANINE RESIDUES.
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要素
#1: タンパク質
TranscriptionattenuationproteinmtrB / Tryptophan RNA-binding attenuator protein / Trp RNA-binding attenuation protein / TRAP