The internal cavity of the staphylococcal alpha-hemolysin pore accommodates approximately 175 exogenous amino acid residues.
The cavity within the cap domain of the transmembrane staphylococcal alpha-hemolysin (alphaHL) pore is roughly a sphere of diameter approximately 45 A (molecular surface volume approximately 39,500 A(3)). We tested the ability of the cavity to accommodate exogenous polypeptide chains. Concatemerized Gly/Ser-containing sequences ("loops", L; number of repeats = n; number of residues = 10n + 5, n = 0-21) were inserted at a position located within the cavity of the fully assembled heptameric alp...Expand abstract
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