ID   KAIB_PROMA              Reviewed;         117 AA.
AC   Q7VAN4;
DT   11-OCT-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 86.
DE   RecName: Full=Circadian clock protein KaiB {ECO:0000255|HAMAP-Rule:MF_01835};
GN   Name=kaiB {ECO:0000255|HAMAP-Rule:MF_01835}; OrderedLocusNames=Pro_1424;
OS   Prochlorococcus marinus (strain SARG / CCMP1375 / SS120).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=167539;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=12917486; DOI=10.1073/pnas.1733211100;
RA   Dufresne A., Salanoubat M., Partensky F., Artiguenave F., Axmann I.M.,
RA   Barbe V., Duprat S., Galperin M.Y., Koonin E.V., Le Gall F., Makarova K.S.,
RA   Ostrowski M., Oztas S., Robert C., Rogozin I.B., Scanlan D.J.,
RA   Tandeau de Marsac N., Weissenbach J., Wincker P., Wolf Y.I., Hess W.R.;
RT   "Genome sequence of the cyanobacterium Prochlorococcus marinus SS120, a
RT   nearly minimal oxyphototrophic genome.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:10020-10025(2003).
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; AE017126; AAQ00468.1; -; Genomic_DNA.
DR   RefSeq; NP_875815.1; NC_005042.1.
DR   RefSeq; WP_011125575.1; NC_005042.1.
DR   AlphaFoldDB; Q7VAN4; -.
DR   SMR; Q7VAN4; -.
DR   STRING; 167539.Pro_1424; -.
DR   EnsemblBacteria; AAQ00468; AAQ00468; Pro_1424.
DR   GeneID; 54200761; -.
DR   KEGG; pma:Pro_1424; -.
DR   PATRIC; fig|167539.5.peg.1490; -.
DR   eggNOG; COG4251; Bacteria.
DR   HOGENOM; CLU_144073_0_0_3; -.
DR   OMA; NEFKGVY; -.
DR   OrthoDB; 1999883at2; -.
DR   Proteomes; UP000001420; 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..117
FT                   /note="Circadian clock protein KaiB"
FT                   /id="PRO_0000217762"
SQ   SEQUENCE   117 AA;  13056 MW;  F34558F181899A03 CRC64;
     MSPRKTYILK LYVAGNTPNS MRALTTLREI LQTDFKGVYA LKVIDVLKNP QLAEEDKILA
     TPTLAKILPP PVRRIIGDLS DRERVLIGLD LLFEELSESD FFSGSPDSEF SSDEGKS