>cd07572 nit Nit1, Nit 2, and related proteins, and the Nit1-like domain of NitFhit (class 10 nitrilases). This subgroup includes mammalian Nit1 and Nit2, the Nit1-like domain of the invertebrate NitFhit, and various uncharacterized bacterial and archaeal Nit-like proteins. Nit1 and Nit2 are candidate tumor suppressor proteins. In NitFhit, the Nit1-like domain is encoded as a fusion protein with the non-homologous tumor suppressor, fragile histidine triad (Fhit). Mammalian Nit1 and Fhit may affect distinct signal pathways, and both may participate in DNA damage-induced apoptosis. Nit1 is a negative regulator in T cells. Overexpression of Nit2 in HeLa cells leads to a suppression of cell growth through cell cycle arrest in G2. These Nit proteins and the Nit1-like domain of NitFhit belong to a larger nitrilase superfamily comprised of nitrile- or amide-hydrolyzing enzymes and amide-condensing enzymes, which depend on a Glu-Lys-Cys catalytic triad. This superfamily has been classified in t

Probab=99.96 E-value=7.3e-28 Score=200.05 Aligned_cols=225 Identities=16% Similarity=0.137 Sum_probs=157.4 Q ss_pred CCCCCCCCCCHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCEEEECCCCCCCCHH-----------HHHHHHHHHHHHHCC Q ss_conf 210012442035554333357899875431013346686189831210110001-----------123466776564107 Q gi|254780425|r 244 VIRIVQPGINPAIKEDREKILERYLSLTALPVSAGELEPVIIVWAYLPFPFSIV-----------DQPSILKKIASVLKI 312 (518) Q Consensus 244 ~V~iVQpni~~~~k~~~~~~~~~~~~l~~~~~~~~~~~~dLiVWPEsa~p~~~~-----------~~~~~~~~l~~~~~~ 312 (518) T Consensus 1 rIA~~Q~~~~----~d~~~Nl~k~~~~i~~---Aa~~gadlivfPE~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~~A~~ 73 (265) T cd07572 1 RVALIQMTST----ADKEANLARAKELIEE---AAAQGAKLVVLPECFNYPGGTDAFKLALAEEEGDGPTLQALSELAKE 73 (265) T ss_pred CEEEEECCCC----CCHHHHHHHHHHHHHH---HHHCCCEEEECCCCCCCCCCCCHHHHHHHCCCCCCHHHHHHHHHHHH T ss_conf 9999968898----8999999999999999---99885979998865247788603556652454799899999999998 Q ss_pred CCEE-EECCCCCCCCCCCCCEEEEEECCCCCCCCCCCCCCEEEEEHHHHHCCCCHHHHHHHHCCCCCCCCCCCCCCCCEE Q ss_conf 9824-201100123455751210000367321221112563342213310010000121110012222101358776200 Q gi|254780425|r 313 NQLL-IVGSMRKELVDGRSHFYKSIYIINSKGEILASSNAKHLVPFAEYLPYRNILKKLNLDFYMFPLDYSSSDISPLLG 391 (518) Q Consensus 313 ~~~l-i~G~~~~~~~~~~~~~yNs~~~~~~~g~~~~~Y~K~~LVPFGEyiP~~~~~~~l~~~~~~~~~~~~~g~~~~~~~ 391 (518) T Consensus 74 ~~i~iv~G~~~e~~-~~~g~~yNsa~vi~~~G~i~~~yrK~HL--f~~~~p~~~--------~~~E~~~f~~G~~~~vf~ 142 (265) T cd07572 74 HGIWLVGGSIPERD-DDDGKVYNTSLVFDPDGELVARYRKIHL--FDVDVPGGI--------SYRESDTLTPGDEVVVVD 142 (265) T ss_pred HCCEEEEEEEEEEE-CCCCEEEEEEEEECCCCCEEEEEEEEEE--ECCCCCCCC--------CEEEEEEEECCCEEEEEC T ss_conf 09889952489985-7899489999998799868878613786--034689976--------230133687798524502 Q ss_pred ECCCCEEECCCCHHHHHHHHHHCC--CCCCEEEEECCCCCCCCCHHHHH-HHHHHHHHHHCCCEEEEEECC--------- Q ss_conf 012200102221666558888512--69977999627755767628999-999999999729919998559--------- Q gi|254780425|r 392 LSEKLRLYPLLFSDALFHQDINNL--ENVSAILNIIDDSGFMGSGTDHS-FRYAQIQAVEIGLPLIRATNN--------- 459 (518) Q Consensus 392 ~~~~~~~~~~ICyE~~f~~~~r~~--~~a~~lvn~tNd~Wf~~s~~~qH-~~~a~~RAiE~~r~~vra~nt--------- 459 (518) T Consensus 143 -~~~~riG~~ICyD~~fPE~~r~la~~Ga~ii~~Psa--~~~~~g~~-~w~~~~~aRA~en~~~v~~~N~~G~~~~~~~~ 218 (265) T cd07572 143 -TPFGKIGLGICYDLRFPELARALARQGADILTVPAA--FTMTTGPA-HWELLLRARAIENQCYVVAAAQAGDHEAGRET 218 (265) T ss_pred -CCCCCCCEEEEECCCCCHHHHHHHHCCCCEEEECCC--CCCCCCHH-HHHHHHHHHHHHCCCEEEEECCCCCCCCCCEE T ss_conf -278434126760445849899877649969997453--57775288-99999999998779469841464458998587 Q ss_pred -CCCEEECCCCEEEEECCCCCCEEEEEEECCCC Q ss_conf -70469989980877738998279999960676 Q gi|254780425|r 460 -GVSAFLDERGQIISSVYADRGASIDMHFQPKV 491 (518) Q Consensus 460 -GiS~~id~~G~i~~~~~~~~~~~l~~~v~~~~ 491 (518) T Consensus 219 ~G~S~I~~P~G~ila~~~~-~E~ll~adiDl~~ 250 (265) T cd07572 219 YGHSMIVDPWGEVLAEAGE-GEGVVVAEIDLDR 250 (265) T ss_pred CCCEEEECCCCCEEEECCC-CCEEEEEEECHHH T ss_conf 0335999599988876599-9879999964999

HHsearch alignment for GI: 254780425 and conserved domain: cd07572