domain annotation of Trimeric Autotransporter Adhesins

Trp ring


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A distinctive feature of this domain is a ring of highly conserved tryptophanes. These residues seem to stabilize the whole domain at the transition between preceding coiled-coil and the domains beta-meander. Structure of this domain was first solved in the Hia adhesin from Haemophilus influenzae. Frequent neighbour of this domain is GIN.

Plot of hydrophobicity and side chain size:

Alignment Show

Found in species:
(numbers in brackets show the number of proteins containing this domain)  

List representing a species spectrum of Trp ring:


    Betaproteobacteria
      Neisseriales
        Neisseriaceae
          Neisseria meningitidis FAM18(1)
          Neisseria meningitidis MC58(1)
          Neisseria meningitidis Z2491(1)
          Neisseria meningitidis(24)
    Gammaproteobacteria
      Pasteurellales
        Pasteurellaceae
          Haemophilus influenzae 22.1-21(1)
          Haemophilus influenzae 22.4-21(1)
          Haemophilus influenzae PittHH(1)
          Haemophilus influenzae R2866(1)
          Haemophilus influenzae R3021(2)
          Haemophilus influenzae Rd KW20(1)
          Haemophilus influenzae(11)
      Pseudomonadales
        Moraxellaceae
          Moraxella catarrhalis(6)

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