>cd01485 E1-1_like Ubiquitin activating enzyme (E1), repeat 1-like. E1, a highly conserved small protein present universally in eukaryotic cells, is part of cascade to attach ubiquitin (Ub) covalently to substrate proteins. This cascade consists of activating (E1), conjugating (E2), and/or ligating (E3) enzymes and then targets them for degradation by the 26S proteasome. E1 activates ubiquitin by C-terminal adenylation, and subsequently forms a highly reactive thioester bond between its catalytic cysteine and ubiquitin's C-terminus. The E1 also associates with E2 and promotes ubiquitin transfer to the E2's catalytic cysteine. A set of novel molecules with a structural similarity to Ub, called Ub-like proteins (Ubls), have similar conjugation cascades. In contrast to ubiquitin-E1, which is a single-chain protein with a weakly conserved two-fold repeat, many of the Ubls-E1are a heterodimer where each subunit corresponds to one half of a single-chain E1. This CD represents the family homol

Probab=92.99 E-value=0.51 Score=25.35 Aligned_cols=102 Identities=17% Similarity=0.071 Sum_probs=0.0 Q ss_pred EEEEECCCHHHHHHHHHHHHCCCEEEEEECC-----------------------------HHHHHHHHHC-CCEEEECCC Q ss_conf 3999888888999999999889889999679-----------------------------4463455644-982898067 Q gi|254780595|r 2 HLMIFGAGYTGKFIADAALKVGVYTCGTTRS-----------------------------VSNLLTLKHK-GISPFLFAD 51 (289) Q Consensus 2 kIlI~GaG~iG~~l~~~L~~~g~~V~~~~r~-----------------------------~~~~~~l~~~-~~~~~~~~~ 51 (289) T Consensus 21 ~VlVvG~GGLG~~v~~~La~aGVg~i~ivD~D~Ve~sNL~RQ~l~~~~~~diG~~Ka~~a~~~l~~lNp~v~i~~~~~~~ 100 (198) T cd01485 21 KVLIIGAGALGAEIAKNLVLAGIDSITIVDHRLVSTEDLGSNFFLDAEVSNSGMNRAAASYEFLQELNPNVKLSIVEEDS 100 (198) T ss_pred CEEEECCCHHHHHHHHHHHHCCCCEEEEEECCCCCCCCCCCCEEECCCCCCCCCCHHHHHHHHHHHHCCCCEEEEEECCC T ss_conf 89998778899999999997499869999599635335775750265411168729999999999779997799982244 Q ss_pred CCCCHHHHHHHCCCCEEEEEECCCCCCCEEECCCCCHHHHHHHCCCCCCCCCCEEECCC Q ss_conf 86402346541156327876124443310001221013443201233433332010257 Q gi|254780595|r 52 QKINNLLREKLYFTTHIVQCIKPSSEGDPCIISMSKDFYKFMPHVKWIGYLSSTSIYGN 110 (289) Q Consensus 52 ~~~~~~~~~~~~~~~~v~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~i~~SS~~VYg~ 110 (289) T Consensus 101 ~~~~~n~~~~~~~~DlVv-------d~~dn~~~r~~in~~c~~~~iPlI~ga~~G~~G~ 152 (198) T cd01485 101 LSNDSNIEEYLQKFTLVI-------ATEENYERTAKVNDVCRKHHIPFISCATYGLIGY 152 (198) T ss_pred CCCHHHHHHHHHCCCEEE-------ECCCCHHHHHHHHHHHHHHCCCEEEEECCCCEEE T ss_conf 577868999984899999-------9999999999999999992998899974566856

HHsearch alignment for GI: 254780595 and conserved domain: cd01485