>cd01489 Uba2_SUMO Ubiquitin activating enzyme (E1) subunit UBA2. UBA2 is part of the heterodimeric activating enzyme (E1), specific for the SUMO family of ubiquitin-like proteins (Ubls). E1 enzymes are part of a conjugation cascade to attach Ub or Ubls, covalently to substrate proteins consisting of activating (E1), conjugating (E2), and/or ligating (E3) enzymes. E1 activates ubiquitin by C-terminal adenylation, and subsequently forms a highly reactive thioester bond between its catalytic cysteine and Ubls C-terminus. The E1 also associates with E2 and promotes ubiquitin transfer to the E2's catalytic cysteine. Post-translational modification by SUMO family of ubiquitin-like proteins (Ublps) is involved in cell division, nuclear transport, the stress response and signal transduction. UBA2 contains both the nucleotide-binding motif involved in adenylation and the catalytic cysteine involved in the thioester intermediate and Ublp transfer to E2.

Probab=93.60  E-value=0.12  Score=30.69  Aligned_cols=32  Identities=31%  Similarity=0.599  Sum_probs=29.3

Q ss_pred             EEEEECCCCHHHHHHHHHHHCCCCEEEEEECC
Q ss_conf             28998898136899999995799869999657
Q gi|254781048|r    5 KIALIGSGMIGGTLAHLAVLKKLGDVVLLDIV   36 (320)
Q Consensus         5 KV~IIGaG~VG~~~a~~~~~~~l~ei~L~D~~   36 (320)
T Consensus         1 KVlvvGaGglG~e~lk~La~~Gvg~i~ivD~D   32 (312)
T cd01489           1 KVLVVGAGGIGCELLKNLVLTGFGEIHIIDLD   32 (312)
T ss_pred             CEEEECCCHHHHHHHHHHHHCCCCEEEEECCC
T ss_conf             98998888889999999998289859997199