>cd06134 RNaseT RNase T is a DEDDh-type DnaQ-like 3'-5' exoribonuclease E implicated in the 3' maturation of small stable RNAs and 23srRNA, and in the end turnover of tRNA. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved pattern at ExoIII. These motifs are clustered around the active site and contain four conserved acidic residues that serve as ligands for the two metal ions required for catalysis. RNase T is related to the proofreading domain of DNA polymerase III. Despite its important role, RNase T is mainly found only in gammaproteobacteria. It is speculated that it might have originated from DNA polymerase III at the time the gamma division of proteobacteria diverged from other bacteria. RNase T is a homodimer with the catalytic residues of one monomer contacting a large basic patch on the other monomer to form a functional active site.

Probab=100.00 E-value=1.4e-45 Score=304.92 Aligned_cols=173 Identities=27% Similarity=0.433 Sum_probs=148.1 Q ss_pred CCCCCCEEEEECCCCCCCCCCCEEEEEEEEEEE-C---CEECCCEEEEEECCC-CCCCCHHHEEECCCC-CCCCCCCCCC Q ss_conf 667775899984678888888889999999999-9---988031379898588-822886572420210-1232248521 Q gi|254780818|r 3 RKNKMRKIVFDIETTGLDSKNDRIIEIGAVELL-D---YSKTNRTFQVFLCPN-GRKNSPEALKLHGIT-DEFLKDKPSF 76 (245) Q Consensus 3 ~~~~mr~iv~D~ETTGl~~~~d~Iieigav~i~-~---~~~~~~~f~~~i~P~-~~~i~~~~~~ihGIt-~~~l~~~p~f 76 (245) T Consensus 1 ~~~~~~~VV~D~ETTGL~p~~d~IIEIgav~v~~d~~g~i~~~~~~~~~v~P~~~~~i~~~~~~itGIt~~~~~~~~~~~ 80 (189) T cd06134 1 RFRGFLPVVVDVETGGFNPQTDALLEIAAVTLEMDEQGNLYPDETFHFHILPFEGANLDPAALEFNGIDPFHPFRFAVDE 80 (189) T ss_pred CCCCCCCEEEEEECCCCCCCCCEEEEEEEEEEEECCCCCCCCCCEEEEEECCCCCCCCCHHHHHHCCCCCHHHHCCCCCH T ss_conf 98898507999528999988980799999999976878532451689977898899898556655077700110016757 Q ss_pred CHHHHHHHHHHHC-------CCCEEEEECCCCCCCEEEECHHCCCCCCCC--CCHHCCCHHCCCCCCCCCCCCHHHHHHH Q ss_conf 0023447775300-------232023102322431121000001122221--0000110000000177642223789997 Q gi|254780818|r 77 SSIFSEFWDFFNE-------QNAEWIAHNAKFDVGFINAELQRINKDPLD--PSRIIDTLSIARRKHPSSRNDLNSLCKR 147 (245) Q Consensus 77 ~ev~~~f~~fi~~-------~~~~lVaHNa~FD~~fL~~el~r~~~~~~~--~~~~iDTl~lar~~~p~~~~~L~~l~~~ 147 (245) T Consensus 81 ~~~~~~~~~~i~~~~~~~~~~~avlVaHNa~FD~~FL~~~~~r~g~~~~p~~~~~~~DTl~La~~~~~--~~~L~~l~~~ 158 (189) T cd06134 81 KEALKEIFKPIRKALKAQGCTRAILVGHNAHFDLGFLNAAVARCKIKRNPFHPFSTFDTATLAGLAYG--QTVLAKACQA 158 (189) T ss_pred HHHHHHHHHHHHHHHHHCCCCCCEEEEECHHHHHHHHHHHHHHCCCCCCCCCCCCEEEHHHHHHHHHC--CCCHHHHHHH T ss_conf 78899999999999875167555687517777299999999984998888877765669999867738--0019999998 Q ss_pred HCCCCCCCCCCCCHHHHHHHHHHHHHHHHC Q ss_conf 187545556664026999999999999730 Q gi|254780818|r 148 YGITISHRSKHGALLDSHLLSDVYIKMMVG 177 (245) Q Consensus 148 ~~i~~~~r~~H~Al~Da~~~a~v~~~ll~g 177 (245) T Consensus 159 ~gi~~~~~~~HrAl~DA~~ta~lf~~l~~k 188 (189) T cd06134 159 AGIEFDNKEAHSALYDTQKTAELFCKIVNR 188 (189) T ss_pred CCCCCCCCCCCCCHHHHHHHHHHHHHHHHH T ss_conf 799999987887299999999999999964

HHsearch alignment for GI: 254780818 and conserved domain: cd06134