HHsearch alignment for GI: 254780588 and conserved domain: cd07023

>cd07023 S49_Sppa_N_C Signal peptide peptidase A (SppA), a serine protease, has catalytic Ser-Lys dyad. Signal peptide peptidase A (SppA; Peptidase S49; Protease IV): SppA is 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. This subfamily contains members with either a single domain (sometimes referred to as 36K type), such as sohB peptidase, protein C and archaeal signal peptide peptidase, or an amino-terminal domain in addition to the carboxyl-terminal protease domain that is conserved in all the S49 family members (sometimes referred to as 67K type), similar to E. coli and Arabidopsis thaliana SppA peptidases. Site-directed mutagenesis and sequence analysis have shown these SppAs to be serine proteases. The predicted active site serine for members in this family occurs in a transmembrane domain. Mutagenesis studies also suggest that the catalytic center comprises a Ser-Lys dyad
Probab=97.69  E-value=0.0005  Score=49.64  Aligned_cols=84  Identities=21%  Similarity=0.172  Sum_probs=63.3

Q ss_pred             HHHHHHHHHHHHHHHCC--CCEEEEEECCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCEEEEEECCCCCCCCCCCCCCC
Q ss_conf             68999999999999719--9489999535324677843002799999998886237998899996167777542113320
Q gi|254780588|r  135 EGYRKAVRLMEMADRFK--IPVISFIDTAGAYPGVDAEARGQGEAIARATEMCLKLQVPILSIIIGEGGSGGAMGIAAAN  212 (317)
Q Consensus       135 ~g~rKa~r~~~~A~~f~--lPiv~lvDtpGa~~g~~aE~~G~~~aia~~l~~~~~~~vP~i~vv~geg~sGGA~a~~~~d  212 (317)
T Consensus        17 ~~~~~i~~~l~~A~~d~~vk~ivL~idSpGG~~-------~~s~ei~~~i~~~k~~~KpV~a~~~~~aaSg~Y~lAs~ad   89 (208)
T cd07023          17 IGADSLIEQLRKAREDDSVKAVVLRINSPGGSV-------VASEEIYREIRRLRKAKKPVVASMGDVAASGGYYIAAAAD   89 (208)
T ss_pred             CCHHHHHHHHHHHHHCCCCCEEEEEEECCCCCH-------HHHHHHHHHHHHHHCCCCEEEEEECCHHHCHHHHHHHCCC
T ss_conf             699999999999950899748999974899629-------9999999999987514985999977711133456551287


Q ss_pred             CEEEECCCCEEEE
Q ss_conf             0022046740121
Q gi|254780588|r  213 FVYMLEHAIYSVI  225 (317)
Q Consensus       213 ~v~m~~~s~ysvi  225 (317)
T Consensus        90 ~I~a~p~s~vGSI  102 (208)
T cd07023          90 KIVANPTTITGSI  102 (208)
T ss_pred             EEEECCCCEECCC
T ss_conf             7997787633320