MIF_MERUN
ID MIF_MERUN Reviewed; 115 AA.
AC O55052;
DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 3.
DT 03-AUG-2022, entry version 88.
DE RecName: Full=Macrophage migration inhibitory factor;
DE Short=MIF;
DE EC=5.3.2.1 {ECO:0000250|UniProtKB:P14174};
DE AltName: Full=L-dopachrome isomerase;
DE AltName: Full=L-dopachrome tautomerase;
DE EC=5.3.3.12 {ECO:0000250|UniProtKB:P14174};
DE AltName: Full=Phenylpyruvate tautomerase;
GN Name=MIF;
OS Meriones unguiculatus (Mongolian jird) (Gerbillus unguiculatus).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae;
OC Gerbillinae; Meriones.
OX NCBI_TaxID=10047;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RA Marson A., Pastrana D., Raghavan N., Scott A.L.;
RT "MIF protein levels change during Brugia malayi infections in the gerbil.";
RL Submitted (FEB-1998) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Pro-inflammatory cytokine involved in the innate immune
CC response to bacterial pathogens. The expression of MIF at sites of
CC inflammation suggests a role as mediator in regulating the function of
CC macrophages in host defense. Counteracts the anti-inflammatory activity
CC of glucocorticoids. Has phenylpyruvate tautomerase and dopachrome
CC tautomerase activity (in vitro), but the physiological substrate is not
CC known. It is not clear whether the tautomerase activity has any
CC physiological relevance, and whether it is important for cytokine
CC activity. {ECO:0000250|UniProtKB:P14174}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=3-phenylpyruvate = enol-phenylpyruvate; Xref=Rhea:RHEA:17097,
CC ChEBI:CHEBI:16815, ChEBI:CHEBI:18005; EC=5.3.2.1;
CC Evidence={ECO:0000250|UniProtKB:P14174};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-dopachrome = 5,6-dihydroxyindole-2-carboxylate;
CC Xref=Rhea:RHEA:13041, ChEBI:CHEBI:16875, ChEBI:CHEBI:57509;
CC EC=5.3.3.12; Evidence={ECO:0000250|UniProtKB:P14174};
CC -!- SUBUNIT: Homotrimer (By similarity). Interacts with CXCR2 extracellular
CC domain (By similarity). Interacts with the CD74 extracellular domain,
CC USO1, COPS5 and BNIPL (By similarity). {ECO:0000250|UniProtKB:P14174,
CC ECO:0000250|UniProtKB:P34884}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250|UniProtKB:P14174}.
CC Cytoplasm {ECO:0000250|UniProtKB:P14174}. Note=Does not have a
CC cleavable signal sequence and is secreted via a specialized, non-
CC classical pathway. Secreted by macrophages upon stimulation by
CC bacterial lipopolysaccharide (LPS), or by M.tuberculosis antigens.
CC {ECO:0000250|UniProtKB:P14174}.
CC -!- SIMILARITY: Belongs to the MIF family. {ECO:0000305}.
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DR EMBL; AF045740; AAC02629.1; -; mRNA.
DR AlphaFoldDB; O55052; -.
DR SMR; O55052; -.
DR PRIDE; O55052; -.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005615; C:extracellular space; IEA:UniProtKB-KW.
DR GO; GO:0005125; F:cytokine activity; IEA:UniProtKB-KW.
DR GO; GO:0004167; F:dopachrome isomerase activity; ISS:UniProtKB.
DR GO; GO:0050178; F:phenylpyruvate tautomerase activity; IEA:UniProtKB-EC.
DR GO; GO:0006954; P:inflammatory response; IEA:UniProtKB-KW.
DR GO; GO:0045087; P:innate immune response; IEA:UniProtKB-KW.
DR Gene3D; 3.30.429.10; -; 1.
DR InterPro; IPR001398; Macrophage_inhib_fac.
DR InterPro; IPR019829; Macrophage_inhib_fac_CS.
DR InterPro; IPR014347; Tautomerase/MIF_sf.
DR PANTHER; PTHR11954; PTHR11954; 1.
DR Pfam; PF01187; MIF; 1.
DR SUPFAM; SSF55331; SSF55331; 1.
DR PROSITE; PS01158; MIF; 1.
PE 3: Inferred from homology;
KW Acetylation; Cytokine; Cytoplasm; Immunity; Inflammatory response;
KW Innate immunity; Isomerase; Secreted.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250|UniProtKB:P14174"
FT CHAIN 2..115
FT /note="Macrophage migration inhibitory factor"
FT /id="PRO_0000158065"
FT ACT_SITE 2
FT /note="Proton acceptor; via imino nitrogen"
FT /evidence="ECO:0000250|UniProtKB:P34884"
FT BINDING 33
FT /ligand="substrate"
FT /evidence="ECO:0000250|UniProtKB:P14174"
FT BINDING 65
FT /ligand="substrate"
FT /evidence="ECO:0000250|UniProtKB:P14174"
FT BINDING 98
FT /ligand="substrate"
FT /evidence="ECO:0000250|UniProtKB:P14174"
FT MOD_RES 78
FT /note="N6-acetyllysine; alternate"
FT /evidence="ECO:0000250|UniProtKB:P14174"
FT MOD_RES 78
FT /note="N6-succinyllysine; alternate"
FT /evidence="ECO:0000250|UniProtKB:P34884"
SQ SEQUENCE 115 AA; 12449 MW; F3DD3EB8F6F1597D CRC64;
MPMFIVNTNV PRSSVPEGLL SELTQQLAQA TGKPAQYIAV HVVPDQLMTF SGSSDPCALC
SLHSIGKIGG AQNRTYSKLL CGLLADRLRI SPDRIYINYY DMNAANVGWN GSTFA
