ID   KAIB_PROM4              Reviewed;         114 AA.
AC   A9BBW6;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   15-JAN-2008, sequence version 1.
DT   25-MAY-2022, entry version 73.
DE   RecName: Full=Circadian clock protein KaiB {ECO:0000255|HAMAP-Rule:MF_01835};
GN   Name=kaiB {ECO:0000255|HAMAP-Rule:MF_01835}; OrderedLocusNames=P9211_13971;
OS   Prochlorococcus marinus (strain MIT 9211).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=93059;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9211;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
CC   -!- FUNCTION: Probable component of the KaiBC clock protein complex, which
CC       constitutes the main circadian regulator in cyanobacteria. In the
CC       complex, it may affect the phosphorylation status of KaiC.
CC       {ECO:0000255|HAMAP-Rule:MF_01835}.
CC   -!- SUBUNIT: Homodimer. Probable component of the KaiBC complex with KaiC
CC       and SasA. {ECO:0000255|HAMAP-Rule:MF_01835}.
CC   -!- SIMILARITY: Belongs to the KaiB family. {ECO:0000255|HAMAP-
CC       Rule:MF_01835}.
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DR   EMBL; CP000878; ABX09328.1; -; Genomic_DNA.
DR   RefSeq; WP_012195949.1; NC_009976.1.
DR   AlphaFoldDB; A9BBW6; -.
DR   SMR; A9BBW6; -.
DR   STRING; 93059.P9211_13971; -.
DR   EnsemblBacteria; ABX09328; ABX09328; P9211_13971.
DR   KEGG; pmj:P9211_13971; -.
DR   eggNOG; COG4251; Bacteria.
DR   HOGENOM; CLU_144073_0_0_3; -.
DR   OMA; NEFKGVY; -.
DR   Proteomes; UP000000788; Chromosome.
DR   GO; GO:0007623; P:circadian rhythm; IEA:UniProtKB-UniRule.
DR   GO; GO:0042326; P:negative regulation of phosphorylation; IEA:InterPro.
DR   CDD; cd02978; KaiB_like; 1.
DR   HAMAP; MF_01835; KaiB; 1.
DR   InterPro; IPR013474; Circ_KaiB.
DR   InterPro; IPR039022; KaiB-like.
DR   InterPro; IPR011649; KaiB_domain.
DR   InterPro; IPR036249; Thioredoxin-like_sf.
DR   PANTHER; PTHR41709; PTHR41709; 1.
DR   Pfam; PF07689; KaiB; 1.
DR   SMART; SM01248; KaiB; 1.
DR   SUPFAM; SSF52833; SSF52833; 1.
DR   TIGRFAMs; TIGR02654; circ_KaiB; 1.
PE   3: Inferred from homology;
KW   Biological rhythms; Reference proteome.
FT   CHAIN           1..114
FT                   /note="Circadian clock protein KaiB"
FT                   /id="PRO_1000188348"
SQ   SEQUENCE   114 AA;  12780 MW;  FC83EB9FE5ABF57C CRC64;
     MSPRKTYILK LYVAGNTPNS MRALKTLHEI LENEFKGVYA LKVIDILKSP QLAEEDKILA
     TPTLTKILPP PVRRIIGDLS DRERVLIGLD LLYEELSGNE FLSSIASPNS DEDN