HHsearch alignment for GI: 254780960 and conserved domain: TIGR01672
>TIGR01672 AphA HAD superfamily (subfamily IIIB) phosphatase, TIGR01672; InterPro: IPR010025 This family of proteins is a member of the IIIB subfamily (IPR001001 from INTERPRO) of the haloacid dehalogenase (HAD) superfamily of hydrolases. All characterised members of subfamily III and most characterised members of the HAD superfamily are phosphatases. HAD superfamily phosphatases contain active site residues in several conserved catalytic motifs , all of which are found conserved in this family. AphA is a periplasmic acid phosphatase of Escherichia coli belonging to class B bacterial phosphatases , which is part of the DDDD superfamily of phosphohydrolases. The crystal structure of AphA has been determined at 2.2A and its resolution extended to 1.7A. Despite the lack of sequence homology, the AphA structure reveals a haloacid dehalogenase-like fold. This finding suggests that this fold could be conserved among members of the DDDD superfamily of phosphohydrolases. The active enzyme is a homotetramer built by using an extended N-terminal arm intertwining the four monomers. The active site of the native enzyme hosts a magnesium ion, which can be replaced by other metal ions. The structure explains the non-specific behaviour of AphA towards substrates, while a structure-based alignment with other phosphatases provides clues about the catalytic mechanism . ; GO: 0003993 acid phosphatase activity, 0030288 outer membrane-bounded periplasmic space.
Probab=95.61 E-value=0.038 Score=31.92 Aligned_cols=172 Identities=17% Similarity=0.136 Sum_probs=82.2
Q ss_pred HHHHHCCCCEEE-----CCCCCCCCCEEEECCCEE-EEECCCCHHHHHHHHCCCHHHHHHHHHHHCCCCCHHHHHHHHHH
Q ss_conf 840216863462-----145555344487227502-65245200278874122327788876520244100123455687
Q gi|254780960|r 61 SIIADKPIDLII-----HRHENRRKNLLIADMDST-MIEQECIDELADLIGIKEKVSLITARAMNGEIPFQDSLRERISL 134 (297)
Q Consensus 61 ~~~~~~~~d~~~-----~~~~~~~~~l~~~d~d~t-li~~~~l~~~a~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 134 (297)
T Consensus 40 ~~~~qa~i~wiSvaqI~~SLeG~~Pi~VsFDIDDTv~LFsSp-~F---~~Gk~~f--------sPgs~---DyLknq~F- 103 (248)
T TIGR01672 40 RLAEQAAIHWISVAQIESSLEGKKPIAVSFDIDDTVLLFSSP-GF---YRGKKKF--------SPGSE---DYLKNQKF- 103 (248)
T ss_pred HHHHHCCEEEEEHHHHHHHHCCCCCCEEECCCCCEEEEECCC-CC---CCCCEEC--------CCCCC---CCCCCHHH-
T ss_conf 897509825875878886651798823435513303231264-20---0573012--------88842---22468136-
Q ss_pred HHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHCCCEEEEEECCCHHHHHHHHHHHCCCHHHHHCCCCHH-HCCCCCCCCC
Q ss_conf 642004568988742113454338999999841986999816723422322655086413431010000-0000001563
Q gi|254780960|r 135 FKGTSTKIIDSLLEKKITYNPGGYELVHTMKQNGASTLLVTGGFSIFARFIAQHLGFDQYYANRFIEKD-DRLTGQVMEP 213 (297)
Q Consensus 135 ~~~~~~~~~~~~~~~~~~~~~~~~~~i~~l~~~g~~v~iisg~~~~~~~~ia~~lgi~~~~a~~~~~~~-~~~~~~~~~~ 213 (297)
T Consensus 104 W----~~vn~g~-D~~SIPKe~A~qLI~MH~~RGD~i~F~TGRt~gsmykkGk~d~v~k~Lak~F~i~~tnm~pv~---f 175 (248)
T TIGR01672 104 W----EKVNKGG-DKYSIPKEVAKQLIDMHQKRGDKIFFVTGRTAGSMYKKGKVDKVAKILAKDFKIDKTNMNPVE---F 175 (248)
T ss_pred H----HHHHCCC-CCCCCCHHHHHHHHHHHHHHCCEEEEEECCCCCCCCCCCCCCCCCHHHHHHCCCCCCCCCCEE---E
T ss_conf 8----9986578-877775789999999887609879998468764433256214333003530687667886335---3
Q ss_pred CCCHHHHH--HHHHHHHHHHCCCCCEEEEEECCCCHHHHHHHCCC-EEEE
Q ss_conf 10521138--87753233103776679999789234889984893-1898
Q gi|254780960|r 214 IIDGTAKS--QILLEAIQKLQINPEDTIAVGDGNNDLDMLRVAGY-GVAF 260 (297)
Q Consensus 214 ~~~~~~k~--~~~~~l~~~~~~~~~~v~avGDg~ND~pmL~~Agv-GVA~ 260 (297)
T Consensus 176 ~Gdk~~~P~~y~Kt~~i~~~~----~~IhYGDSD~Di~AAkeaGaRgIRi 221 (248)
T TIGR01672 176 AGDKERKPYKYDKTQYIKDKK----VRIHYGDSDDDILAAKEAGARGIRI 221 (248)
T ss_pred ECCCCCCCCCCCCCHHHHHCC----CEEEECCCHHHHHHHHHCCCCCEEE
T ss_conf 178888885434308987588----6488758856889998678885224