ID   KCY_AERPE               Reviewed;         172 AA.
AC   Q9YDD5;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   26-JUN-2007, sequence version 2.
DT   03-AUG-2022, entry version 106.
DE   RecName: Full=Cytidylate kinase;
DE            Short=CK;
DE            EC=2.7.4.25;
DE   AltName: Full=Cytidine monophosphate kinase;
DE            Short=CMP kinase;
GN   Name=cmk; OrderedLocusNames=APE_0978.1;
OS   Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 /
OS   K1).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC   Desulfurococcaceae; Aeropyrum.
OX   NCBI_TaxID=272557;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1;
RX   PubMed=10382966; DOI=10.1093/dnares/6.2.83;
RA   Kawarabayasi Y., Hino Y., Horikawa H., Yamazaki S., Haikawa Y., Jin-no K.,
RA   Takahashi M., Sekine M., Baba S., Ankai A., Kosugi H., Hosoyama A.,
RA   Fukui S., Nagai Y., Nishijima K., Nakazawa H., Takamiya M., Masuda S.,
RA   Funahashi T., Tanaka T., Kudoh Y., Yamazaki J., Kushida N., Oguchi A.,
RA   Aoki K., Kubota K., Nakamura Y., Nomura N., Sako Y., Kikuchi H.;
RT   "Complete genome sequence of an aerobic hyper-thermophilic crenarchaeon,
RT   Aeropyrum pernix K1.";
RL   DNA Res. 6:83-101(1999).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + CMP = ADP + CDP; Xref=Rhea:RHEA:11600,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:58069, ChEBI:CHEBI:60377,
CC         ChEBI:CHEBI:456216; EC=2.7.4.25;
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + dCMP = ADP + dCDP; Xref=Rhea:RHEA:25094,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:57566, ChEBI:CHEBI:58593,
CC         ChEBI:CHEBI:456216; EC=2.7.4.25;
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the cytidylate kinase family. Type 2 subfamily.
CC       {ECO:0000305}.
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DR   EMBL; BA000002; BAA79962.2; -; Genomic_DNA.
DR   PIR; B72695; B72695.
DR   AlphaFoldDB; Q9YDD5; -.
DR   SMR; Q9YDD5; -.
DR   STRING; 272557.APE_0978.1; -.
DR   EnsemblBacteria; BAA79962; BAA79962; APE_0978.1.
DR   KEGG; ape:APE_0978.1; -.
DR   eggNOG; arCOG01037; Archaea.
DR   Proteomes; UP000002518; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0036430; F:CMP kinase activity; IEA:RHEA.
DR   GO; GO:0036431; F:dCMP kinase activity; IEA:RHEA.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   GO; GO:0006220; P:pyrimidine nucleotide metabolic process; IEA:UniProtKB-UniRule.
DR   CDD; cd02020; CMPK; 1.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_00239; Cytidyl_kinase_type2; 1.
DR   InterPro; IPR011892; Cyt_kin_arch.
DR   InterPro; IPR011994; Cytidylate_kinase_dom.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR02173; cyt_kin_arch; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Kinase; Nucleotide-binding; Reference proteome;
KW   Transferase.
FT   CHAIN           1..172
FT                   /note="Cytidylate kinase"
FT                   /id="PRO_0000132008"
FT   BINDING         4..12
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   172 AA;  19674 MW;  5AF61B66CEB16F0E CRC64;
     MISGPPGSGK STYAKRLAED LGLSYYSTGT IFRSIARERG LSLAEMSRLA EEDPRIDLEI
     DRRTLDVASR GGVVIDSHLA AWLLRDKAQY LVLVKAPVWV RVRRIARRDG VPLRRALAET
     VEREWSQRLR FKRYYGIDVS DTTIFHLTVD TSMYSVEDTY RLILEGARRR GL