Protein: Transcription factor MafK (Erythroid transcription factor NF-E2 p18 subunit) (O60675)
Organism: Homo sapiens (Human)
Function: Since they lack a putative transactivation domain, the small Mafs behave as transcriptional repressors when they dimerize among themselves. However, they act as transcriptional activators by dimerizing with other (usually larger) basic-zipper proteins, such as NFE2, NFE2L1/NRF1, NFE2L2/NRF2 and NFE2L3/NRF3, and recruiting them to specific DNA-binding sites. Small Maf proteins heterodimerize with Fos and may act as competitive repressors of the NF-E2 transcription factor.
Subcellular location: Nucleus.
Sequence: MTTNPKPNKALKVKKEAGENAPVLSDDELVSMSVRELNQHLRGLTKEEVTRLKQRRRTLKNRGYAASCRIKRVTQKEELERQRVELQQEVEKLARENSSMRLELDALRSKYEALQTFARTVARGPVAPSKVATTSVITIVKSTELSSTSVPFSAAS
InterPro domains: - IPR046347: Basic-leucine zipper domain superfamily (homologous_superfamily) [52-109]
- IPR024874: Transcription factor Maf family (family) [22-145]
- IPR004827: Basic-leucine zipper domain (domain) [49-114]
- IPR004826: Basic leucine zipper domain, Maf-type (domain) [24-115]
- IPR008917: Transcription factor, Skn-1-like, DNA-binding domain superfamily (homologous_superfamily) [24-64]
Interaction partners: - Nuclear factor erythroid 2-related factor 2
- Transcription regulator protein BACH1
- Transcription factor NF-E2 45 kDa subunit
- Transcription regulator protein BACH2
- Transcription factor MafG
- Nuclear factor erythroid 2-related factor 3
- Endoplasmic reticulum membrane sensor NFE2L1
- Transcription factor MafF
- Heme oxygenase 1
- Histone deacetylase 3
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0097159 (organic cyclic compound binding), GO:1901363 (heterocyclic compound binding), GO:0005515 (protein binding), GO:0042802 (identical protein binding), GO:0003676 (nucleic acid binding), GO:0003677 (DNA binding), GO:0003690 (double-stranded DNA binding), GO:0043565 (sequence-specific DNA binding), GO:1990837 (sequence-specific double-stranded DNA binding)
Biological Process (BP): GO:0008150 (biological process), GO:0065007 (biological regulation), GO:0050789 (regulation of biological process), GO:0019222 (regulation of metabolic process), GO:0050794 (regulation of cellular process), GO:0060255 (regulation of macromolecule metabolic process), GO:0031323 (regulation of cellular metabolic process), GO:0080090 (regulation of primary metabolic process), GO:0009889 (regulation of biosynthetic process), GO:0051171 (regulation of nitrogen compound metabolic process), GO:0019219 (regulation of nucleobase-containing compound metabolic process), GO:0051252 (regulation of RNA metabolic process), GO:0010556 (regulation of macromolecule biosynthetic process), GO:0010468 (regulation of gene expression), GO:0031326 (regulation of cellular biosynthetic process), GO:2001141 (regulation of RNA biosynthetic process), GO:0006355 (regulation of DNA-templated transcription), GO:1903506 (regulation of nucleic acid-templated transcription)
Cellular Component (CC): GO:0005575 (cellular component), GO:0032991 (protein-containing complex), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0140513 (nuclear protein-containing complex), GO:0005667 (transcription regulator complex), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0043233 (organelle lumen), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0090575 (RNA polymerase II transcription regulator complex), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0031981 (nuclear lumen), GO:0005634 (nucleus)