NCBI Accession #
NP_001032050.1
NCBI GenBank Nucleotide #
NM_001036973.2
NCBI Official Full Name
SUMO activating enzyme 1B
NCBI Official Symbol
SAE1B
NCBI Official Synonym Symbols
ARABIDOPSIS THALIANA SUMO ACTIVATING ENZYME 1B; ATSAE1B; MFB16.15; SUMO activating enzyme 1B
NCBI Protein Information
SUMO activating enzyme 1B
NCBI Summary
Encodes a protein that is part of a heterodimeric SUMO E1 activating enzyme.
UniProt Gene Name
SAE1B-2
UniProt Synonym Gene Names
SAE1-2
UniProt Protein Name
SUMO-activating enzyme subunit 1B-2
UniProt Synonym Protein Names
SUMO-activating enzyme subunit 1-2; Ubiquitin-like 1-activating enzyme E1A
UniProt Primary Accession #
P0DI13
UniProt Secondary Accession #
Q8LCB9; Q8LKN3; Q9LUF3
UniProt Related Accession #
P0DI12; P0DI13
UniProt Comments
The dimeric enzyme acts as an E1 ligase for SUMO1 and SUMO2. It mediates ATP-dependent activation of SUMO proteins and formation of a thioester with a conserved cysteine residue on SAE2. Functionally redundant with its paralog SAE1A .