Types | DnaRegion
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Roles | polypeptide_domain
Protein_Domain
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Sequences | BBa_K257018_sequence (Version 1)
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Description
AIDA-I is the adhesin involved in diffuse adherence of E.coli. It belongs to the monomeric autotransporter protein family of the type-V secretion pathway. AIDA-I is synthesized from the aidA gene as a 145 kDa pre-proprotein with three domains : first, an N-terminal sec-dependent signal sequence that allows transport across the inner membrane; second, a cenral domain of 100kDa, the mature AIDA-I, bearing the functional part of the protein; and finally, a C-terminal membrane-embedded domain of 45kDa, AIDAc, which is predicted to form a pore in the outer membrane and might serve as a translocation conduit for mature AIDA-I.
Notes
We had to deal with considerations about the linker domain which links the translocated protein to the translocator domain of AIDA-I. In fact, this linker needs to have a minimal length so that the protein translocated would be really functional at the outer side of the outer membrane.
Source
AIDA has been synthesized in vitro.