ID   IF2B_NATPD              Reviewed;         134 AA.
AC   Q3INQ4;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-NOV-2005, sequence version 1.
DT   25-MAY-2022, entry version 84.
DE   RecName: Full=Translation initiation factor 2 subunit beta {ECO:0000255|HAMAP-Rule:MF_00232};
DE   AltName: Full=aIF2-beta {ECO:0000255|HAMAP-Rule:MF_00232};
DE   AltName: Full=eIF-2-beta {ECO:0000255|HAMAP-Rule:MF_00232};
GN   Name=eif2b {ECO:0000255|HAMAP-Rule:MF_00232}; OrderedLocusNames=NP_4314A;
OS   Natronomonas pharaonis (strain ATCC 35678 / DSM 2160 / CIP 103997 / JCM
OS   8858 / NBRC 14720 / NCIMB 2260 / Gabara) (Halobacterium pharaonis).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC   Haloarculaceae; Natronomonas.
OX   NCBI_TaxID=348780;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35678 / DSM 2160 / CIP 103997 / JCM 8858 / NBRC 14720 / NCIMB
RC   2260 / Gabara;
RX   PubMed=16169924; DOI=10.1101/gr.3952905;
RA   Falb M., Pfeiffer F., Palm P., Rodewald K., Hickmann V., Tittor J.,
RA   Oesterhelt D.;
RT   "Living with two extremes: conclusions from the genome sequence of
RT   Natronomonas pharaonis.";
RL   Genome Res. 15:1336-1343(2005).
CC   -!- FUNCTION: eIF-2 functions in the early steps of protein synthesis by
CC       forming a ternary complex with GTP and initiator tRNA.
CC       {ECO:0000255|HAMAP-Rule:MF_00232}.
CC   -!- SUBUNIT: Heterotrimer composed of an alpha, a beta and a gamma chain.
CC       {ECO:0000255|HAMAP-Rule:MF_00232}.
CC   -!- SIMILARITY: Belongs to the eIF-2-beta/eIF-5 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00232}.
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DR   EMBL; CR936257; CAI50248.1; -; Genomic_DNA.
DR   RefSeq; WP_011323864.1; NC_007426.1.
DR   AlphaFoldDB; Q3INQ4; -.
DR   SMR; Q3INQ4; -.
DR   STRING; 348780.NP_4314A; -.
DR   EnsemblBacteria; CAI50248; CAI50248; NP_4314A.
DR   GeneID; 3703266; -.
DR   KEGG; nph:NP_4314A; -.
DR   eggNOG; arCOG01640; Archaea.
DR   HOGENOM; CLU_026663_3_1_2; -.
DR   OMA; NVKHHKS; -.
DR   OrthoDB; 96453at2157; -.
DR   Proteomes; UP000002698; Chromosome.
DR   GO; GO:0003743; F:translation initiation factor activity; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00232; eIF_2_beta; 1.
DR   InterPro; IPR045196; IF2/IF5.
DR   InterPro; IPR004458; TIF2_bsu_arc.
DR   InterPro; IPR002735; Transl_init_fac_IF2/IF5_dom.
DR   InterPro; IPR016189; Transl_init_fac_IF2/IF5_N.
DR   InterPro; IPR016190; Transl_init_fac_IF2/IF5_Zn-bd.
DR   PANTHER; PTHR23001; PTHR23001; 1.
DR   Pfam; PF01873; eIF-5_eIF-2B; 1.
DR   SMART; SM00653; eIF2B_5; 1.
DR   SUPFAM; SSF100966; SSF100966; 1.
DR   SUPFAM; SSF75689; SSF75689; 1.
PE   3: Inferred from homology;
KW   Initiation factor; Protein biosynthesis; Reference proteome.
FT   CHAIN           1..134
FT                   /note="Translation initiation factor 2 subunit beta"
FT                   /id="PRO_1000021656"
FT   REGION          1..32
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        1..16
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   134 AA;  15052 MW;  9D8EA8688ED75610 CRC64;
     MGYEEQLDRA LEETPDIEGT AARFSVPDPD VRQEGNATVY ENFQPTIDRL DREESHVMKF
     LQNELGTSAN IDERGRLRLT GEFRQARVEE AINDYVEGYV ICPECGLPDT RLEKENGAEV
     LRCEACGARS PAGN