ID   IF2B_PYRHO              Reviewed;         140 AA.
AC   O58312;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1998, sequence version 1.
DT   25-MAY-2022, entry version 112.
DE   RecName: Full=Translation initiation factor 2 subunit beta;
DE   AltName: Full=aIF2-beta;
DE   AltName: Full=eIF-2-beta;
GN   Name=eif2b; OrderedLocusNames=PH0605;
OS   Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC
OS   100139 / OT-3).
OC   Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC   Pyrococcus.
OX   NCBI_TaxID=70601;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3;
RX   PubMed=9679194; DOI=10.1093/dnares/5.2.55;
RA   Kawarabayasi Y., Sawada M., Horikawa H., Haikawa Y., Hino Y., Yamamoto S.,
RA   Sekine M., Baba S., Kosugi H., Hosoyama A., Nagai Y., Sakai M., Ogura K.,
RA   Otsuka R., Nakazawa H., Takamiya M., Ohfuku Y., Funahashi T., Tanaka T.,
RA   Kudoh Y., Yamazaki J., Kushida N., Oguchi A., Aoki K., Yoshizawa T.,
RA   Nakamura Y., Robb F.T., Horikoshi K., Masuchi Y., Shizuya H., Kikuchi H.;
RT   "Complete sequence and gene organization of the genome of a hyper-
RT   thermophilic archaebacterium, Pyrococcus horikoshii OT3.";
RL   DNA Res. 5:55-76(1998).
CC   -!- FUNCTION: eIF-2 functions in the early steps of protein synthesis by
CC       forming a ternary complex with GTP and initiator tRNA. {ECO:0000250}.
CC   -!- SUBUNIT: Heterotrimer composed of an alpha, a beta and a gamma chain.
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the eIF-2-beta/eIF-5 family. {ECO:0000305}.
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DR   EMBL; BA000001; BAA29694.1; -; Genomic_DNA.
DR   PIR; D71104; D71104.
DR   RefSeq; WP_010884707.1; NC_000961.1.
DR   AlphaFoldDB; O58312; -.
DR   SMR; O58312; -.
DR   STRING; 70601.3257011; -.
DR   EnsemblBacteria; BAA29694; BAA29694; BAA29694.
DR   GeneID; 1442941; -.
DR   KEGG; pho:PH0605; -.
DR   eggNOG; arCOG01640; Archaea.
DR   OMA; NVKHHKS; -.
DR   OrthoDB; 96453at2157; -.
DR   Proteomes; UP000000752; 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.
DR   TIGRFAMs; TIGR00311; aIF-2beta; 1.
PE   3: Inferred from homology;
KW   Initiation factor; Protein biosynthesis.
FT   CHAIN           1..140
FT                   /note="Translation initiation factor 2 subunit beta"
FT                   /id="PRO_0000137431"
SQ   SEQUENCE   140 AA;  16247 MW;  9D40F2C1428A129A CRC64;
     MEIDYYDYEK LLEKAYEELP ENVKHHKSRF EVPGALVTIE GNKTIIENFK DIAEALNRDP
     QHLLKFLLRE IATAGTLEGK RVVLQGRFTP YLIANKLKKY IKEYVICPVC GSPDTKIIKR
     DRFYFLKCEA CGAETPIQHL