ID   IFNA2_HORSE             Reviewed;         184 AA.
AC   P05004;
DT   13-AUG-1987, integrated into UniProtKB/Swiss-Prot.
DT   13-AUG-1987, sequence version 1.
DT   25-MAY-2022, entry version 116.
DE   RecName: Full=Interferon alpha-2;
DE   Flags: Precursor;
OS   Equus caballus (Horse).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Laurasiatheria; Perissodactyla; Equidae; Equus.
OX   NCBI_TaxID=9796;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RX   PubMed=3022999; DOI=10.1089/dna.1986.5.345;
RA   Himmler A., Hauptmann R., Adolf G.R., Swetly P.;
RT   "Molecular cloning and expression in Escherichia coli of equine type I
RT   interferons.";
RL   DNA 5:345-356(1986).
CC   -!- FUNCTION: Produced by macrophages, IFN-alpha have antiviral activities.
CC       {ECO:0000269|PubMed:3022999}.
CC   -!- SUBUNIT: Interacts with IFNAR2. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the alpha/beta interferon family. {ECO:0000305}.
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DR   EMBL; M14541; AAA30950.1; -; Genomic_DNA.
DR   PIR; B24912; IVHOA2.
DR   AlphaFoldDB; P05004; -.
DR   SMR; P05004; -.
DR   STRING; 9796.ENSECAP00000026656; -.
DR   PaxDb; P05004; -.
DR   Proteomes; UP000002281; Unplaced.
DR   GO; GO:0005615; C:extracellular space; IBA:GO_Central.
DR   GO; GO:0005125; F:cytokine activity; IBA:GO_Central.
DR   GO; GO:0005132; F:type I interferon receptor binding; IBA:GO_Central.
DR   GO; GO:0002250; P:adaptive immune response; IBA:GO_Central.
DR   GO; GO:0030183; P:B cell differentiation; IBA:GO_Central.
DR   GO; GO:0042100; P:B cell proliferation; IBA:GO_Central.
DR   GO; GO:0019221; P:cytokine-mediated signaling pathway; IBA:GO_Central.
DR   GO; GO:0051607; P:defense response to virus; IEA:UniProtKB-KW.
DR   GO; GO:0006959; P:humoral immune response; IBA:GO_Central.
DR   GO; GO:0002323; P:natural killer cell activation involved in immune response; IBA:GO_Central.
DR   GO; GO:0033141; P:positive regulation of peptidyl-serine phosphorylation of STAT protein; IBA:GO_Central.
DR   GO; GO:0043330; P:response to exogenous dsRNA; IBA:GO_Central.
DR   GO; GO:0002286; P:T cell activation involved in immune response; IBA:GO_Central.
DR   CDD; cd00095; IFab; 1.
DR   Gene3D; 1.20.1250.10; -; 1.
DR   InterPro; IPR009079; 4_helix_cytokine-like_core.
DR   InterPro; IPR000471; Interferon_alpha/beta/delta.
DR   PANTHER; PTHR11691; PTHR11691; 1.
DR   Pfam; PF00143; Interferon; 1.
DR   PRINTS; PR00266; INTERFERONAB.
DR   SMART; SM00076; IFabd; 1.
DR   SUPFAM; SSF47266; SSF47266; 1.
DR   PROSITE; PS00252; INTERFERON_A_B_D; 1.
PE   3: Inferred from homology;
KW   Antiviral defense; Cytokine; Disulfide bond; Reference proteome; Secreted;
KW   Signal.
FT   SIGNAL          1..23
FT   CHAIN           24..184
FT                   /note="Interferon alpha-2"
FT                   /id="PRO_0000016372"
FT   DISULFID        24..122
FT                   /evidence="ECO:0000250"
FT   DISULFID        52..162
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   184 AA;  20877 MW;  FC15DC7D811C68EC CRC64;
     MALPFSLLMA LVVLSCHSSC SLGCDLPHTH SLGNTRVLML LGQMRRISPF SCLKDRNDFG
     FPQEVFDGNQ FRKPQAISAV HETIQQIFHL FSTDGSSAAW DESLLDKLYT GLYQQLTELE
     ACLSQEVGVE ETPLMNEDSL LAVRRYFQRI ALYLQEKKYS PCAWEIVRAE IMRCFSSSTN
     LQQS