UNIPROT #

Q13469

PROTEIN NAME

NFAT1

SYNONYMS

AI607462 antibody; cytoplasmic 2 antibody; KIAA0611 antibody; NF ATc2 antibody; NF ATp antibody; NF-ATc2 antibody; NF-ATp antibody; NFAC2_HUMAN antibody; NFAT 1 antibody; NFAT pre existing subunit antibody; NFAT pre-existing subunit antibody; NFAT transcription complex, preexisting component antibody; NFAT1 antibody; NFAT1-D antibody; NFATc2 antibody; NFATp antibody; Nuclear factor of activated T cells cytoplasmic 2 antibody; Nuclear factor of activated T cells cytoplasmic calcineurin dependent 2 antibody; Nuclear factor of activated T cells pre-existing component antibody; Nuclear factor of activated T cells, preexisting component antibody; Nuclear factor of activated T-cells antibody; Preexisting nuclear factor of activated T cells 2 antibody; T cell transcription factor NFAT 1 antibody; T-cell transcription factor NFAT1 antibody

TISSUE SPECIFICITY

Expressed in thymus, spleen, heart, testis, brain, placenta, muscle and pancreas. Isoform 1 is highly expressed in the small intestine, heart, testis, prostate, thymus, placenta and thyroid. Isoform 3 is highly expressed in stomach, uterus, placenta, trachea and thyroid.

POST-TRANSLATIONAL MODIFICATION

In resting cells, phosphorylated by NFATC-kinase on at least 18 sites in the 99-363 region. Upon cell stimulation, all these sites except Ser-243 are dephosphorylated by calcineurin. Dephosphorylation induces a conformational change that simultaneously exposes an NLS and masks an NES, which results in nuclear localization. Simultaneously, Ser-53 or Ser-56 is phosphorylated; which is required for full transcriptional activity.; Ubiquitinated in endothelial cells by RNF213 downstream of the non-canonical Wnt signaling pathway, leading to its degradation by the proteasome.

SUBCELLULAR LOCATION

Cytoplasm. Nucleus.

FUNCTION

The NFAT (nuclear factor of activated T cells) family of transcription factors regulates cytokine expression in T cells. Members of the family include NFATc1 (NFATc), NFATc2 (NFATp), NFATn, NFATc3 (NFAT4, NFATx) and NFATc4 (NFAT3). Recognition of antigen by the T cell receptor (TCR) eventually activates the calcium-dependent protein phosphatase calcineurin. Once activated, calcineurin stimulates the translocation of NFATc1 (cytoplasmic) from the cytoplasm to the nucleus where it associates with NFATn (nuclear). Like NFATc1, NFATc2 resides in the cytoplasm and translocates to the nucleus subsequent to activation of calcineurin. Once in the nucleus, NFATc2 synergizes with AP-1 transcription factors to initiate transcription of cytokine genes. NFATc3 and NFATc4 share 65% sequence identity with other members of the NFAT family. They are similar to NFATc2 in that they also synergize with the AP-1 family of proteins.