HHsearch alignment for GI: 254780598 and conserved domain: cd00342

>cd00342 gram_neg_porins Porins form aqueous channels for the diffusion of small hydrophillic molecules across the outer membrane. Individual 16-strand anti-parallel beta-barrels form a central pore, and trimerizes thru mainly hydrophobic interactions at the interface. Trimers are stabilized by hytrophillic clamping of Loop L2. Loop 3 bends into the pore, creating an elliptical constriction of about 7 x 11A, large enough to allow passage of a glucose molecule without steric hindrance. Removal of the C-terminal residue (usuallly F) destabilizes the trimer and removal of the 16th beta-sheet abolishes trimerization. Unlike typical membrane proteins, porins lack long hydrophobic stretches. Short turns are found at the smooth, periplasmic end, longer irregular loops are found at the rough, extracellular end. C-terminal residue forms salt bridge with N-terminus.
Probab=97.42  E-value=0.0052  Score=33.21  Aligned_cols=24  Identities=25%  Similarity=0.282  Sum_probs=10.8

Q ss_conf             9734661004886799999999750
Q gi|254780598|r  163 AGVGVEVGGLSESLVARLEYRASKY  187 (205)
Q Consensus       163 ~G~Gvey~~it~~~~~r~EY~y~df  187 (205)
T Consensus       275 ~~lG~~Y-~lSKrT~lY~~~~~~~n  298 (329)
T cd00342         275 VALGADY-ALSKRTDLYAEYGYQKN  298 (329)
T ss_conf             9999999-71554898665054110