HHsearch alignment for GI: 254780272 and conserved domain: cd07014

>cd07014 S49_SppA Signal peptide peptidase A. Signal peptide peptidase A (SppA; Peptidase S49; Protease IV): SppA is an intramembrane enzyme found in all three domains of life and is involved in the cleavage of signal peptides after their removal from the precursor proteins by signal peptidases. Unlike the eukaryotic functional homologs that are proposed to be aspartic proteases, site-directed mutagenesis and sequence analysis have shown these bacterial, archaeal and thylakoid SppAs to be ClpP-like serine proteases. The predicted active site serine for members in this family occurs in a transmembrane domain, cleaving peptide bonds in the plane of the lipid bilayer. Mutagenesis studies also suggest that the catalytic center comprises a Ser-Lys dyad (both residues absolutely conserved within bacteria, chloroplast and mitochondrial signal peptidase family members) and not the usual Ser-His-Asp catalytic triad found in the majority of serine proteases. In addition to the carboxyl-terminal p
Probab=99.59  E-value=2.4e-14  Score=111.04  Aligned_cols=144  Identities=24%  Similarity=0.199  Sum_probs=118.8

Q ss_pred             HHHHHHHHHHHHHHCCCCCCEEEEEECCCCCHHHHHHHHHHHHHC---CCCEEEEEECCCCCCCCCCCCCCCCCCEEECC
Q ss_conf             999999999997411576976999936876146789999998644---87348998315566520000246777145544
Q gi|254780272|r   55 MATLICAQLLFLEAENPQKEISLYINSPGGVVTAGMAIYDTMQFI---KPPISTFCMGQAASMGSLLLSAGEKGMRFALP  131 (216)
Q Consensus        55 ~a~~iia~Ll~L~~~~~~k~I~l~INSpGG~v~~glaIyD~i~~i---~~~V~Ti~~G~aaS~aslIl~aG~~g~R~~~p  131 (216)
T Consensus        23 ~~~~i~~~l~~a~~d~~vkaIvL~InSPGGs~~~s~~i~~~I~~~r~~~KPV~a~~~~~aASg~Y~iA~aad--~I~a~p  100 (177)
T cd07014          23 SGDTTAAQIRDARLDPKVKAIVLRVNSPGGSVTASEVIRAELAAARAAGKPVVASGGGNAASGGYWISTPAN--YIVANP  100 (177)
T ss_pred             CHHHHHHHHHHHHHCCCCCEEEEEEECCCCCHHHHHHHHHHHHHHHHCCCCEEEEECCCCCCHHHHHHHCCC--EEEECC
T ss_conf             699999999999519996289999618981889999999999998865998999977856205778761278--899869


Q ss_pred             CHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHCCCCCCCHHHHHHCCCCCEEECC
Q ss_conf             1566441256666555412899999999999999999998719998999997245858888999975886446045
Q gi|254780272|r  132 NARILLHQPSGGFSGQASDIERHAQDIVKIKRRLNEIYVKNCGKTYEEVEKTLDRDHIMSASEACDWGVVDKVLMS  207 (216)
Q Consensus       132 ns~iMiHqps~~~~G~~~di~~~a~el~~~~~~l~~i~a~~Tg~~~e~i~~~~~rD~~lsa~EA~eyGliD~Ii~~  207 (216)
T Consensus       101 ~s~vG----SIGV~~~~~~~---q~~vd~~~~~Fv~~Va~~R~~~~~~~~~~~~~G~v~~g~~A~~~GLiD~iG~~  169 (177)
T cd07014         101 STLVG----SIGIFGVQLAD---QLSIENGYKRFITLVADNRHSTPEQQIDKIAQGGVWTGQDAKANGLVDSLGSF  169 (177)
T ss_pred             CCEEE----EEEEEEEHHHH---HHHHHHHHHHHHHHHHHHCCCCHHHHHHHHCCCCEEEHHHHHHCCCCCCCCCH
T ss_conf             97277----62698666899---99999999999999997479996786876068677889999986997656999