ID   IF2B_PYRAE              Reviewed;         134 AA.
AC   Q8ZXA6;
DT   10-MAY-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   25-MAY-2022, entry version 91.
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=PAE1373;
OS   Pyrobaculum aerophilum (strain ATCC 51768 / DSM 7523 / JCM 9630 / CIP
OS   104966 / NBRC 100827 / IM2).
OC   Archaea; Crenarchaeota; Thermoprotei; Thermoproteales; Thermoproteaceae;
OC   Pyrobaculum.
OX   NCBI_TaxID=178306;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51768 / DSM 7523 / JCM 9630 / CIP 104966 / NBRC 100827 / IM2;
RX   PubMed=11792869; DOI=10.1073/pnas.241636498;
RA   Fitz-Gibbon S.T., Ladner H., Kim U.-J., Stetter K.O., Simon M.I.,
RA   Miller J.H.;
RT   "Genome sequence of the hyperthermophilic crenarchaeon Pyrobaculum
RT   aerophilum.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:984-989(2002).
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; AE009441; AAL63443.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8ZXA6; -.
DR   SMR; Q8ZXA6; -.
DR   STRING; 178306.PAE1373; -.
DR   EnsemblBacteria; AAL63443; AAL63443; PAE1373.
DR   KEGG; pai:PAE1373; -.
DR   PATRIC; fig|178306.9.peg.1018; -.
DR   eggNOG; arCOG01640; Archaea.
DR   HOGENOM; CLU_026663_3_1_2; -.
DR   InParanoid; Q8ZXA6; -.
DR   OMA; FIRYYVV; -.
DR   Proteomes; UP000002439; Chromosome.
DR   GO; GO:0003743; F:translation initiation factor activity; IBA:GO_Central.
DR   GO; GO:0001732; P:formation of cytoplasmic translation initiation complex; IBA:GO_Central.
DR   GO; GO:0001731; P:formation of translation preinitiation complex; IBA:GO_Central.
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_0000137429"
SQ   SEQUENCE   134 AA;  15357 MW;  79B1C3DF6292A064 CRC64;
     MDSEYAALLE RAYKLVAPKA QRRAEIPKIE VENMPRKTII PNFGQIAKRL NRDVYFMAKF
     FQKELAVPGT LEGDVFTLHG EKSPKVVEAV YDRFIRYYVV CPVCNSIDTE LRKEGRIFIM
     RCLACGASTP VRPL