>cd01484 E1-2_like Ubiquitin activating enzyme (E1), repeat 2-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. 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 homologou

Probab=98.11  E-value=5e-05  Score=52.70  Aligned_cols=39  Identities=26%  Similarity=0.472  Sum_probs=30.7

Q ss_pred             EEEEECCCHHHHHHHHHHHHCCCCCCEEEEEECCHHHHHHH
Q ss_conf             19998498779999999996089872599963999999999
Q gi|254780742|r    4 NVLIIGAGGVAHVVAHKCAQNNDILGDINIASRTLQKCSKI   44 (419)
Q Consensus         4 ~ilv~GaG~vG~~~~~~L~~~~~~~~~i~va~r~~~~~~~~   44 (419)
T Consensus         1 KVlvvGaGglGce~~k~La~~G--vg~i~iiD~D~Ie~SNL   39 (234)
T cd01484           1 KVLLVGAGGIGCELLKNLALMG--FGQIHVIDMDTIDVSNL   39 (234)
T ss_pred             CEEEECCCHHHHHHHHHHHHCC--CCEEEEECCCEECCCCC
T ss_conf             9899948887999999999839--98699975990056770