>TIGR01882 peptidase-T peptidase T; InterPro: IPR010161 Metalloproteases are the most diverse of the four main types of protease, with more than 50 families identified to date. In these enzymes, a divalent cation, usually zinc, activates the water molecule. The metal ion is held in place by amino acid ligands, usually three in number. The known metal ligands are His, Glu, Asp or Lys and at least one other residue is required for catalysis, which may play an electrophillic role. Of the known metalloproteases, around half contain an HEXXH motif, which has been shown in crystallographic studies to form part of the metal-binding site . The HEXXH motif is relatively common, but can be more stringently defined for metalloproteases as 'abXHEbbHbc', where 'a' is most often valine or threonine and forms part of the S1' subsite in thermolysin and neprilysin, 'b' is an uncharged residue, and 'c' a hydrophobic residue. Proline is never found in this site, possibly because it would break the helical structure adopted by this motif in metalloproteases . 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. This entry represents metallopeptidases belonging to MEROPS peptidase family M20 (clan MH), subfamily M20B. They are tripeptide aminopeptidases commonly known as Peptidase T, which have a substrate preference for hydrophobic peptides.; GO: 0008270 zinc ion binding, 0016285 cytosol alanyl aminopeptidase activity, 0045148 tripeptide aminopeptidase activity, 0006518 peptide metabolic process, 0005737 cytoplasm.

Probab=99.95 E-value=4.4e-27 Score=185.30 Aligned_cols=350 Identities=18% Similarity=0.200 Sum_probs=247.3 Q ss_pred HHHHHHHHHHHCCCCCCCCH----------HHHHH-HHHHHHHHCCCEEEEEEECCCCCCEEEEEEEEECCC----CCEE Q ss_conf 78999999996499978996----------89999-999999977984899970588876248999998799----9889 Q gi|254780782|r 3 PDCLEHLIQLIKCPSVTPQD----------GGAFF-ILVNTLKLLGFSIEEKDFQTKNTSIVKNLYARFGTE----APHL 67 (389) Q Consensus 3 ~e~v~~l~~lv~ips~s~~e----------~~~~~-~l~~~l~~~G~~~~~~~~~~~~~~~~~~~~~~~g~~----~~~i 67 (389) T Consensus 3 e~llpRFl~YVKVntrSDEnsdt~PST~~~~~f~~n~~~~dlk~lGl~--D~hy~e~n----GyViatiPsNtdkdVp~i 76 (413) T TIGR01882 3 EELLPRFLKYVKVNTRSDENSDTTPSTEAEVEFAKNVLVEDLKELGLK--DVHYDEKN----GYVIATIPSNTDKDVPKI 76 (413) T ss_pred CCCCCHHCCEEEEECCCCCCCCCCCCCHHHHHHHHHHHHHHHHHCCCC--CEEECCCC----CEEEEECCCCCCCCCCEE T ss_conf 222001142575103126767788885788865423678999870840--11001258----718985477866667612 Q ss_pred EEECCCCCC-CCCCHHHC---------------------CCCC--------CCE----EEECCCCCCCCCCCCCCHHHHH Q ss_conf 997336815-78887772---------------------5666--------422----4521332365443332012454 Q gi|254780782|r 68 MFAGHIDVV-PPGDFNHW---------------------TYPP--------FSA----TIAEGKIYGRGIVDMKGSIACF 113 (389) Q Consensus 68 ll~~H~Dtv-p~~~~~~W---------------------~~~P--------f~~----~~~~g~l~GrG~~D~Kg~ia~~ 113 (389) T Consensus 77 GfLAH~DTAtDF-n~enVnPQI~enYDGes~i~lgd~eftLdP~~fPnL~~YKGqTlittdGtTLLG---~d~K~GiaEi 152 (413) T TIGR01882 77 GFLAHVDTATDF-NAENVNPQILENYDGESVIQLGDLEFTLDPEDFPNLKKYKGQTLITTDGTTLLG---ADDKAGIAEI 152 (413) T ss_pred EEEECCCCCCCC-CCCCCCCCEEECCCCCCEEEECCEEEEECCCCCCCCCCCCCCEEEECCCCCCCC---CCCCCCHHHH T ss_conf 012201100022-567877755203688504550650176272217642258876788516861116---6533428899 Q ss_pred HHHCCCCCC-CCC-CCCCEEEEEEEECCCEECCCCCCCCCCCCCCCCCCCEEE--ECCCCCCCCCCEEEEEEEEEEEEEE Q ss_conf 410000000-113-578349997520220110442111110001332120354--1456654343100123222357999 Q gi|254780782|r 114 IAAVARFIP-KYK-NFGSISLLITGDEEGPAINGTKKMLSWIEKKGEKWDACI--VGEPTCNHIIGDTIKIGRRGSLSGE 189 (389) Q Consensus 114 l~a~~~l~~-~~~-~~~~i~~~~~~dEE~~~~~G~~~l~~~~~~~~~~~d~~i--~~ep~~~~~~~~~i~~g~rG~~~~~ 189 (389) T Consensus 153 MT~adYL~~ihPe~kHG~IRvaFtPDEEIG~--Ga~kFD---VkdF~-adFAyTVDGgplG--eL~yetF----sAA~a~ 220 (413) T TIGR01882 153 MTLADYLLNIHPEVKHGKIRVAFTPDEEIGV--GAEKFD---VKDFD-ADFAYTVDGGPLG--ELEYETF----SAAAAK 220 (413) T ss_pred HHHHHHHHHCCCCCCCCEEEECCCCCCCCCC--CCCCCC---EEECC-CCEEEECCCCCCC--CCCCCCC----CCCCCE T ss_conf 9999998504896103737744568724477--965033---00047-8553551788887--6565440----100107 Q ss_pred EEEEEECCCCHHH-HCCCCHHHHHHHHHHCCCCCCCCCCCCCCCCEEEEEEEEEECCCCCCCCCCCEEEEECCCCCCHHH Q ss_conf 9996412310000-001201345544320112233445664421014667655420466655432116651343420677 Q gi|254780782|r 190 ITIHGKQGHVAYP-HLTENPIRGLIPLLHQLTNIGFDTGNTTFSPTNMEITTIDVGNPSKNVIPAQVKMSFNIRFNDLWN 268 (389) Q Consensus 190 i~v~G~~~Hs~~p-~~g~nAi~~~~~~i~~l~~~~~~~~~~~~~~~~~~i~~i~~g~~~~NvIP~~a~~~~diR~~~~~~ 268 (389) T Consensus 221 i~i~G~NVHPgtAKg~MiNa~~~aid~hn~LPe~drPE~TeGrEG-FfHLLs~d-Gt------veea~l~YIIRDfe~~~ 292 (413) T TIGR01882 221 IEIQGKNVHPGTAKGKMINAVQVAIDYHNLLPEDDRPEKTEGREG-FFHLLSLD-GT------VEEAKLAYIIRDFEKEK 292 (413) T ss_pred EEEECCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCC-CEEEECCC-CC------HHHCCCEEEEEECCCCC T ss_conf 775021007400123678899999877423764567887688640-10220147-78------51101013464125575 Q ss_pred HHHHHHHHHHHHHHHHHHHCCCCEEEEECCCC--CCCCCCCHHHHHHHHHHHHHHHHCCCCEEEECCCCCHHHHHH-HCC Q ss_conf 99999999998765324203431123222663--112578678999999999999828995797414543588986-059 Q gi|254780782|r 269 EKTLKEEIRSRLIKGIQNVPKLSHTVHFSSPV--SPVFLTHDRKLTSLLSKSIYNTTGNIPLLSTSGGTSDARFIK-DYC 345 (389) Q Consensus 269 ~~~i~~~i~~~l~~~~~~~~~~~~~i~~~~~~--~p~~~~~~~~l~~~l~~a~~~~~g~~~~~~~~gg~~d~~~~~-~~i 345 (389) T Consensus 293 f~eRK~l~k~iv~kmn~E~G~~Rikl~~nDQYYNMa~~iek~~~IvdiAk~Amen-lgiep~i~PiRGGTDGSqlsyMGL 371 (413) T TIGR01882 293 FEERKELMKEIVEKMNDEYGQDRIKLDMNDQYYNMAEKIEKDMEIVDIAKKAMEN-LGIEPKIEPIRGGTDGSQLSYMGL 371 (413) T ss_pred HHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCHHHHHHCCCCCCHHHHHHHHHHH-CCCCEEECCCCCCCCCCCCEECCC T ss_conf 2568999999999987651756423352632112587515643024788999985-699610045457876121001678 Q ss_pred CEEEEEECCCCCCCCCCEEEHHHHHHHHHHHHHHHHHH Q ss_conf 89999004787368784047999999999999999987 Q gi|254780782|r 346 PVIEFGLVGRTMHALNENASLQDLEDLTCIYENFLQNW 383 (389) Q Consensus 346 P~v~fGp~~~~~H~pdE~i~i~~l~~~~~~~~~~i~~~ 383 (389) T Consensus 372 PtPNiFaGgENmHGrfEy~sv~~M~KaVdv~~eia~ln 409 (413) T TIGR01882 372 PTPNIFAGGENMHGRFEYVSVESMVKAVDVLVEIAKLN 409 (413) T ss_pred CCCCCCCCCCCCCCEEEEEEECCCHHHHHHHHHHHHHH T ss_conf 78764558867765168887545055899999999986

HHsearch alignment for GI: 254780782 and conserved domain: TIGR01882