>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=94.96 E-value=0.039 Score=33.96 Aligned_cols=134 Identities=13% Similarity=0.218 Sum_probs=74.4 Q ss_pred CCCCEEEEECCCCHHHHHHHHHHHCCCCEEEEEECCCCCHHHHHHHHHHHCCCCCCCCEEEECCCHHHHCCCCEEEEECC Q ss_conf 99872899889813689999999579986999965788128988307620544688756852697488378978999556 Q gi|254781048|r 1 MKSNKIALIGSGMIGGTLAHLAVLKKLGDVVLLDIVDGMPRGKALDIAESSPVEGFGAQLCGTSDYSDIAEADVCIVTAG 80 (320) Q Consensus 1 mk~~KV~IIGaG~VG~~~a~~~~~~~l~ei~L~D~~~~~~~g~~~Dl~~~~~~~~~~~~v~~~~d~~~l~~aDivVitag 80 (320) T Consensus 17 L~~s~VlVvG~GGLG~~v~~~La~aGVg~i~ivD~D~V-------e~s------NL~RQ~l~~-----~~~~di------ 72 (198) T cd01485 17 LRSAKVLIIGAGALGAEIAKNLVLAGIDSITIVDHRLV-------STE------DLGSNFFLD-----AEVSNS------ 72 (198) T ss_pred HHHCCEEEECCCHHHHHHHHHHHHCCCCEEEEEECCCC-------CCC------CCCCCEEEC-----CCCCCC------ T ss_conf 97098999877889999999999749986999959963-------533------577575026-----541116------ Q ss_pred CCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCCCCCEEEECCCCHHHHHHHHHH-CCCCHHHHHHHCCCHHHHHHHHHHHH Q ss_conf 66676557467899889999999976541266740887148420789999884-49986561100052568999999999 Q gi|254781048|r 81 IPRKPSMSRDDLLADNLKAIEKVGAGIRKYAPNSFVICITNPLDAMVWALQKF-SGLPSHMVVGMAGILDSARFRYFLAQ 159 (320) Q Consensus 81 ~~~~~g~~R~dll~~N~~i~~~i~~~i~~~~p~~i~ivvtNPvDv~~~~~~~~-sg~~~~rViG~Gt~LDs~R~~~~ia~ 159 (320) T Consensus 73 -----G~~Ka~----------~a~~~l~~lNp~v~i~~~~~~~~~~~~n~~~~~~~~D--lVvd~~dn~~~r~~in~~c~ 135 (198) T cd01485 73 -----GMNRAA----------ASYEFLQELNPNVKLSIVEEDSLSNDSNIEEYLQKFT--LVIATEENYERTAKVNDVCR 135 (198) T ss_pred -----CCCHHH----------HHHHHHHHHCCCCEEEEEECCCCCCHHHHHHHHHCCC--EEEECCCCHHHHHHHHHHHH T ss_conf -----872999----------9999999779997799982244577868999984899--99999999999999999999 Q ss_pred HCCCCCCCCEEEEECCCC Q ss_conf 719873355056750788 Q gi|254781048|r 160 EFGVSVESVTALVLGSHG 177 (320) Q Consensus 160 ~l~v~~~~V~~~ViGeHG 177 (320) T Consensus 136 ~~~iP--lI~ga~~G~~G 151 (198) T cd01485 136 KHHIP--FISCATYGLIG 151 (198) T ss_pred HHCCC--EEEEECCCCEE T ss_conf 92998--89997456685

HHsearch alignment for GI: 254781048 and conserved domain: cd01485