Recombinant Human Adenosine monophosphate-protein transferase FICD (FICD), Truncated

Uniprot Id

Q9BVA6

Target Species

Human

Target Name

FICD

Target Full Name

Protein adenylyltransferase FICD

Target Function

Protein that can both mediate the addition of adenosine 5'-monophosphate (AMP) to specific residues of target proteins (AMPylation), and the removal of the same modification from target proteins (de-AMPylation), depending on the context. The side chain of Glu-231 determines which of the two opposing activities (AMPylase or de-AMPylase) will take place. Acts as a key regulator of the ERN1/IRE1-mediated unfolded protein response (UPR) by mediating AMPylation or de-AMPylation of HSPA5/BiP. In unstressed cells, acts as an adenylyltransferase by mediating AMPylation of HSPA5/BiP at 'Thr-518', thereby inactivating it. In response to endoplasmic reticulum stress, acts as a phosphodiesterase by mediating removal of ATP (de-AMPylation) from HSPA5/BiP at 'Thr-518', leading to restore HSPA5/BiP activity. Although it is able to AMPylate RhoA, Rac and Cdc42 Rho GTPases in vitro, Rho GTPases do not constitute physiological substrates.

Target Subcellular Location

Endoplasmic reticulum membrane; Single-pass type II membrane protein.

Target Protein Families

Fic family

Target Tissue Specificity

Ubiquitous.

Target Synonyms

FICD; HIP13; HYPE; UNQ3041/PRO9857; Protein adenylyltransferase FICD; AMPylator FICD; De-AMPylase FICD; FIC domain-containing protein; Huntingtin yeast partner E; Huntingtin-interacting protein 13; HIP-13; Huntingtin-interacting protein E

Target Background

Enables several functions, including ATP binding activity; Hsp70 protein binding activity; and chaperone binding activity. Involved in protein adenylylation; regulation of IRE1-mediated unfolded protein response; and response to endoplasmic reticulum stress. Is integral component of endoplasmic reticulum membrane.