HHsearch alignment for GI: 254780420 and conserved domain: TIGR01382

>TIGR01382 PfpI intracellular protease, PfpI family; InterPro: IPR006286 Peptidases are grouped into clans and families. Clans are groups of families for which there is evidence of common ancestry. Each clan is identified with two letters, the first representing the catalytic type of the families included in the clan (with the letter 'P' being used for a clan containing families of more than one of the catalytic types serine, threonine and cysteine). Some families cannot yet be assigned to clans, and when a formal assignment is required, such a family is described as belonging to clan A-, C-, M-, S-, T- or U-, according to the catalytic type. Some clans are divided into subclans because there is evidence of a very ancient divergence within the clan, for example MA(E), the gluzincins, and MA(M), the metzincins. Families are grouped by their catalytic type, the first character representing the catalytic type: A, aspartic; C, cysteine; G, glutamic acid; M, metallo; S, serine; T, threonine; and U, unknown. The serine, threonine and cysteine peptidases utilise the amino acid as a nucleophile and form an acyl intermediate - these peptidases can also readily act as transferases. In the case of aspartic, glutamic and metallopeptidases, the nucleophile is an activated water molecule. Cysteine peptidases have characteristic molecular topologies, which can be seen not only in their three-dimensional structures, but commonly also in the two-dimensional structures. These are peptidases in which the nucleophile is the sulphydryl group of a cysteine residue. Cysteine proteases are divided into clans (proteins which are evolutionary related), and further sub-divided into families, on the basis of the architecture of their catalytic dyad or triad . This group of cysteine peptidases belong to MEROPS peptidase family C56 (Pfp1 endopeptidase, clan PC(C)). The member of this family from Pyrococcus horikoshii has been solved to 2 Angstrom resolution. It is an ATP-independent intracellular protease that crystallises as a hexameric ring. Cys-101 is proposed as the active site residue in a catalytic triad with the adjacent His-102 and a Glu residue from an adjacent monomer. A member of this family from Bacillus subtilis, GSP18, has been shown to be expressed in response to several forms of stress. A role in the degradation of small peptides has been suggested. This family is contained in a larger one of the thiamine biosynthesis protein ThiJ and its homologs.; GO: 0016798 hydrolase activity acting on glycosyl bonds.
Probab=97.93  E-value=7.5e-06  Score=61.87  Aligned_cols=97  Identities=20%  Similarity=0.323  Sum_probs=71.4

Q ss_pred             CEEEEEE-CCCCCHHHH-----------HHHHHCCCCEEEECCCCHHHHHHCCCCEEEECCCCCCCCC--CCCCCHHHHH
Q ss_conf             1499996-796410232-----------2222024541330465744644135788998588888410--1121101222
Q gi|254780420|r  206 YHVVCID-YGIRSNLLR-----------VLSSLGCRITIVGAETSYKDIMSLQPDGVLLSNGPGDPAV--TSVYSSPIIC  271 (396)
Q Consensus       206 ~kIvvID-fGiK~nIlr-----------~L~~~g~~v~Vvp~~~~~~~i~~~~pdgi~lSnGPGdP~~--~~~~~~~~~~  271 (396)
T Consensus        27 ~~V~~v~~g~~~g~~v~~aihdfeGdqty~~~~g~~v~v---d~~~~~v~~~~YDal~ipGG~a~~e~LR~d~~~~~lvR  103 (189)
T TIGR01382        27 HEVTVVSIGKEAGTIVGDAIHDFEGDQTYTEKHGYSVTV---DATIDDVDPEDYDALVIPGGRASPEYLRLDEKVIRLVR  103 (189)
T ss_pred             CEEEEEEECCEECCEEECEEECCCCCCCCCCCCCEEEEE---ECCEECCCHHHCCEEEEECCCCCCCCCCCCHHHHHHHH
T ss_conf             889898316500232201101156763213478816887---44121478525647897177356000148768999999


Q ss_pred             HHCCCCCCEEEEECHHHHHHHHCCCCCCCCCCCCCCCCCC
Q ss_conf             1025786347861005887875285446677675210112
Q gi|254780420|r  272 KLVDSGMPMFGICLGHQLLGLALGAQTVKMYQGHHGVNHP  311 (396)
Q Consensus       272 ~~~~~~iPilGIClGhQ~l~~a~G~~~~kl~~GhrG~N~P  311 (396)
T Consensus       104 ~f~e~gK~vaaIChgp~lLi~A~---Vlr---Gkk~T~y~  137 (189)
T TIGR01382       104 EFVEKGKPVAAICHGPQLLISAG---VLR---GKKLTAYP  137 (189)
T ss_pred             HHHHCCCEEEEEECCCEEEEECC---EEC---CCEEEECC
T ss_conf             98417881999845300000255---103---75375339