ID   MTNK_CITK8              Reviewed;         399 AA.
AC   A8ANI4;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   16-DEC-2008, sequence version 2.
DT   03-AUG-2022, entry version 67.
DE   RecName: Full=Methylthioribose kinase {ECO:0000255|HAMAP-Rule:MF_01683};
DE            Short=MTR kinase {ECO:0000255|HAMAP-Rule:MF_01683};
DE            EC=2.7.1.100 {ECO:0000255|HAMAP-Rule:MF_01683};
GN   Name=mtnK {ECO:0000255|HAMAP-Rule:MF_01683}; OrderedLocusNames=CKO_03975;
OS   Citrobacter koseri (strain ATCC BAA-895 / CDC 4225-83 / SGSC4696).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Citrobacter.
OX   NCBI_TaxID=290338;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-895 / CDC 4225-83 / SGSC4696;
RG   The Citrobacter koseri Genome Sequencing Project;
RA   McClelland M., Sanderson E.K., Porwollik S., Spieth J., Clifton W.S.,
RA   Latreille P., Courtney L., Wang C., Pepin K., Bhonagiri V., Nash W.,
RA   Johnson M., Thiruvilangam P., Wilson R.;
RL   Submitted (AUG-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the phosphorylation of methylthioribose into
CC       methylthioribose-1-phosphate. {ECO:0000255|HAMAP-Rule:MF_01683}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-(methylsulfanyl)-D-ribose + ATP = ADP + H(+) + S-methyl-5-
CC         thio-alpha-D-ribose 1-phosphate; Xref=Rhea:RHEA:22312,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:58533,
CC         ChEBI:CHEBI:78440, ChEBI:CHEBI:456216; EC=2.7.1.100;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01683};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via salvage
CC       pathway; S-methyl-5-thio-alpha-D-ribose 1-phosphate from S-methyl-5'-
CC       thioadenosine (hydrolase route): step 2/2. {ECO:0000255|HAMAP-
CC       Rule:MF_01683}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01683}.
CC   -!- SIMILARITY: Belongs to the methylthioribose kinase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01683}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABV15047.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CP000822; ABV15047.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_024130868.1; NC_009792.1.
DR   AlphaFoldDB; A8ANI4; -.
DR   SMR; A8ANI4; -.
DR   STRING; 290338.CKO_03975; -.
DR   EnsemblBacteria; ABV15047; ABV15047; CKO_03975.
DR   GeneID; 45137627; -.
DR   KEGG; cko:CKO_03975; -.
DR   HOGENOM; CLU_033681_0_0_6; -.
DR   OrthoDB; 1457558at2; -.
DR   UniPathway; UPA00904; UER00872.
DR   Proteomes; UP000008148; Chromosome.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0046522; F:S-methyl-5-thioribose kinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019509; P:L-methionine salvage from methylthioadenosine; IEA:UniProtKB-UniPathway.
DR   GO; GO:0019284; P:L-methionine salvage from S-adenosylmethionine; IEA:UniProtKB-UniRule.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   HAMAP; MF_01683; Salvage_MtnK; 1.
DR   InterPro; IPR002575; Aminoglycoside_PTrfase.
DR   InterPro; IPR011009; Kinase-like_dom_sf.
DR   InterPro; IPR009212; Methylthioribose_kinase.
DR   Pfam; PF01636; APH; 1.
DR   PIRSF; PIRSF031134; MTRK; 1.
DR   SUPFAM; SSF56112; SSF56112; 1.
DR   TIGRFAMs; TIGR01767; MTRK; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; ATP-binding; Kinase; Methionine biosynthesis;
KW   Nucleotide-binding; Reference proteome; Transferase.
FT   CHAIN           1..399
FT                   /note="Methylthioribose kinase"
FT                   /id="PRO_0000357338"
FT   BINDING         40
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01683"
FT   BINDING         57
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01683"
FT   BINDING         111..113
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01683"
FT   BINDING         229
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01683"
FT   BINDING         246..248
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01683"
FT   BINDING         344
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01683"
SQ   SEQUENCE   399 AA;  44676 MW;  E00DAA2AA86EE415 CRC64;
     MSQYRTFTAQ DAVEYARTFG GIDDPSTLVE AQEVGDGNLN LVFKIFDTTG VSRIVVKQAL
     PYVRCVGESW PLTLDRARLE AQTLVAHYQH CPQHTVKIHH FDPELAVMVM EDLSDHNIWR
     GELIKGAWYP QAARQLGEYL AQTLFHTSDF YLHPHDKKAQ VATFINPEMC EITEDLFFND
     PYQIHERNSY PAEIEGDVAA LRSDAQLKLA VAALKHRFFS HAEALLHGDI HSGSIFVADG
     RLKAIDAEFG YFGPIGFDVG TAIGNLLLNF CGLPGHLGIR DAAAAREQRL TDIQELWNTF
     AERFQVLATE KTRDAALRAP GYASEFLKKV WADAIGFCGT ELIRRSVGLS HVADIDTIQD
     AEMRHECLRH AITLGKALIV IADRIESVEA LIARVRQYS