Reviewed, UniProtKB/Swiss-Prot O60675 (MAFK_HUMAN)

Names and origin

Protein names

Recommended name:
    Transcription factor MafK
Alternative name(s):
    Erythroid transcription factor NF-E2 p18 subunit

Gene names

Name:

MAFK

Organism

Homo sapiens (Human)

Taxonomic identifier

9606 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo

Protein attributes

Sequence length	156 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at transcript level.

General annotation (Comments)

Function	Since they lack a putative transactivation domain, the small Mafs behave as transcriptional repressors when they dimerize among themselves. However, they seem to serve as transcriptional activators by dimerizing with other (usually larger) basic-zipper proteins 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.
Subunit structure	Homodimer or heterodimer. It can form high affinity heterodimers with members of the CNC-bZIP family such as NFE2, NFE2L1/NRF1, NFE2L2/NRF2 and NFE2L3/NRF3.
Subcellular location	Nucleus.
Sequence similarities	Belongs to the bZIP family. Maf subfamily. Contains 1 bZIP domain.

Ontologies

Keywords
Biological process	Transcription Transcription regulation
Cellular component	Nucleus
Ligand	DNA-binding
Molecular function	Repressor
Gene Ontology (GO)
Biological process	regulation of transcription, DNA-dependent Inferred from electronic annotation. Source: InterPro
Cellular component	nucleus Inferred from electronic annotation. Source: InterPro
Molecular function	protein dimerization activity Inferred from electronic annotation. Source: InterPro sequence-specific DNA binding Inferred from electronic annotation. Source: InterPro transcription factor activity Ref.1 Non-traceable author statement. Source: ProtInc
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 156	156	Transcription factor MafK		PRO_0000076503
Regions
	Domain	86 – 114	29	Leucine-zipper
	DNA binding	51 – 76	26	Basic motif

Sequences

	Sequence		Length	Mass (Da)
	O60675-1 [UniParc]. Last modified August 1, 1998. Version 1. Checksum: 39F98F8D550C168E	FASTA	156	17,523
	10 20 30 40 50 60 MTTNPKPNKA LKVKKEAGEN APVLSDDELV SMSVRELNQH LRGLTKEEVT RLKQRRRTLK 70 80 90 100 110 120 NRGYAASCRI KRVTQKEELE RQRVELQQEV EKLARENSSM RLELDALRSK YEALQTFART 130 140 150 VARGPVAPSK VATTSVITIV KSTELSSTSV PFSAAS

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Human small Maf proteins form heterodimers with CNC family transcription factors and recognize the NF-E2 motif." Toki T., Itoh J., Kitazawa J., Arai K., Hatakeyama K., Akasaka J., Igarashi K., Nomura N., Yokoyama M., Yamamoto M., Ito E. Oncogene 14:1901-1910(1997) [PubMed: 9150357] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[2]	"The DNA sequence of human chromosome 7." Hillier L.W., Fulton R.S., Fulton L.A., Graves T.A., Pepin K.H., Wagner-McPherson C., Layman D., Maas J., Jaeger S., Walker R., Wylie K., Sekhon M., Becker M.C., O'Laughlin M.D., Schaller M.E., Fewell G.A., Delehaunty K.D., Miner T.L. , Nash W.E., Cordes M., Du H., Sun H., Edwards J., Bradshaw-Cordum H., Ali J., Andrews S., Isak A., Vanbrunt A., Nguyen C., Du F., Lamar B., Courtney L., Kalicki J., Ozersky P., Bielicki L., Scott K., Holmes A., Harkins R., Harris A., Strong C.M., Hou S., Tomlinson C., Dauphin-Kohlberg S., Kozlowicz-Reilly A., Leonard S., Rohlfing T., Rock S.M., Tin-Wollam A.-M., Abbott A., Minx P., Maupin R., Strowmatt C., Latreille P., Miller N., Johnson D., Murray J., Woessner J.P., Wendl M.C., Yang S.-P., Schultz B.R., Wallis J.W., Spieth J., Bieri T.A., Nelson J.O., Berkowicz N., Wohldmann P.E., Cook L.L., Hickenbotham M.T., Eldred J., Williams D., Bedell J.A., Mardis E.R., Clifton S.W., Chissoe S.L., Marra M.A., Raymond C., Haugen E., Gillett W., Zhou Y., James R., Phelps K., Iadanoto S., Bubb K., Simms E., Levy R., Clendenning J., Kaul R., Kent W.J., Furey T.S., Baertsch R.A., Brent M.R., Keibler E., Flicek P., Bork P., Suyama M., Bailey J.A., Portnoy M.E., Torrents D., Chinwalla A.T., Gish W.R., Eddy S.R., McPherson J.D., Olson M.V., Eichler E.E., Green E.D., Waterston R.H., Wilson R.K. Nature 424:157-164(2003) [PubMed: 12853948] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	AF059194 mRNA. Translation: AAC14426.1. AC093734 Genomic DNA. Translation: AAP21866.1.
RefSeq	NP_002351.1.
UniGene	Hs.520612
3D structure databases
HSSP	HSSP built from PDB template 1K1V based on UniProtKB O54790.
ModBase	Search...
PTM databases
PhosphoSite	O60675.
Genome annotation databases
Ensembl	ENSG00000198517. Homo sapiens. [Contig view]
GeneID	7975.
KEGG	hsa:7975.
Organism-specific databases
H-InvDB	HIX0006420.
HGNC	HGNC:6782. MAFK.
MIM	600197. gene.
PharmGKB	PA30540.
GenAtlas	Search...
GeneCards	Search...
Phylogenomic databases
HOGENOM	O60675.
HOVERGEN	O60675.
Gene expression databases
ArrayExpress	O60675.
CleanEx	HS_MAFK.
GermOnline	ENSG00000198517. Homo sapiens.
Family and domain databases
InterPro	IPR004827. TF_bZIP. IPR004826. TF_Maf. [Graphical view]
Pfam	PF03131. bZIP_Maf. 1 hit. [Graphical view]
SMART	SM00338. BRLZ. 1 hit. [Graphical view]
PROSITE	PS50217. BZIP. 1 hit. PS00036. BZIP_BASIC. False negative. [Graphical view]
ProtoNet	Search...
Other Resources
NextBio	30491.
SOURCE	Search...

Entry information

Entry name

MAFK_HUMAN

Accession

Primary (citable) accession number: O60675

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 21, 2001
Last sequence update:	August 1, 1998
Last modified:	November 25, 2008
This is version 61 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)