ID   COBS_PROMM              Reviewed;         260 AA.
AC   Q7V4T2;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 90.
DE   RecName: Full=Adenosylcobinamide-GDP ribazoletransferase {ECO:0000255|HAMAP-Rule:MF_00719};
DE            EC=2.7.8.26 {ECO:0000255|HAMAP-Rule:MF_00719};
DE   AltName: Full=Cobalamin synthase {ECO:0000255|HAMAP-Rule:MF_00719};
DE   AltName: Full=Cobalamin-5'-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00719};
GN   Name=cobS {ECO:0000255|HAMAP-Rule:MF_00719}; OrderedLocusNames=PMT_1861;
OS   Prochlorococcus marinus (strain MIT 9313).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=74547;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9313;
RX   PubMed=12917642; DOI=10.1038/nature01947;
RA   Rocap G., Larimer F.W., Lamerdin J.E., Malfatti S., Chain P., Ahlgren N.A.,
RA   Arellano A., Coleman M., Hauser L., Hess W.R., Johnson Z.I., Land M.L.,
RA   Lindell D., Post A.F., Regala W., Shah M., Shaw S.L., Steglich C.,
RA   Sullivan M.B., Ting C.S., Tolonen A., Webb E.A., Zinser E.R.,
RA   Chisholm S.W.;
RT   "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche
RT   differentiation.";
RL   Nature 424:1042-1047(2003).
CC   -!- FUNCTION: Joins adenosylcobinamide-GDP and alpha-ribazole to generate
CC       adenosylcobalamin (Ado-cobalamin). Also synthesizes adenosylcobalamin
CC       5'-phosphate from adenosylcobinamide-GDP and alpha-ribazole 5'-
CC       phosphate. {ECO:0000255|HAMAP-Rule:MF_00719}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=adenosylcob(III)inamide-GDP + alpha-ribazole =
CC         adenosylcob(III)alamin + GMP + H(+); Xref=Rhea:RHEA:16049,
CC         ChEBI:CHEBI:10329, ChEBI:CHEBI:15378, ChEBI:CHEBI:18408,
CC         ChEBI:CHEBI:58115, ChEBI:CHEBI:60487; EC=2.7.8.26;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00719};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=adenosylcob(III)inamide-GDP + alpha-ribazole 5'-phosphate =
CC         adenosylcob(III)alamin 5'-phosphate + GMP + H(+);
CC         Xref=Rhea:RHEA:23560, ChEBI:CHEBI:15378, ChEBI:CHEBI:57918,
CC         ChEBI:CHEBI:58115, ChEBI:CHEBI:60487, ChEBI:CHEBI:60493; EC=2.7.8.26;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00719};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00719};
CC   -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC       adenosylcobalamin from cob(II)yrinate a,c-diamide: step 7/7.
CC       {ECO:0000255|HAMAP-Rule:MF_00719}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00719}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00719}.
CC   -!- SIMILARITY: Belongs to the CobS family. {ECO:0000255|HAMAP-
CC       Rule:MF_00719}.
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DR   EMBL; BX548175; CAE22036.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q7V4T2; -.
DR   STRING; 74547.PMT_1861; -.
DR   EnsemblBacteria; CAE22036; CAE22036; PMT_1861.
DR   KEGG; pmt:PMT_1861; -.
DR   eggNOG; COG0368; Bacteria.
DR   HOGENOM; CLU_057426_3_0_3; -.
DR   OMA; GHTGDTY; -.
DR   UniPathway; UPA00148; UER00238.
DR   Proteomes; UP000001423; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0051073; F:adenosylcobinamide-GDP ribazoletransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008818; F:cobalamin 5'-phosphate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009236; P:cobalamin biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00719; CobS; 1.
DR   InterPro; IPR003805; CobS.
DR   PANTHER; PTHR34148; PTHR34148; 1.
DR   Pfam; PF02654; CobS; 1.
DR   TIGRFAMs; TIGR00317; cobS; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Cobalamin biosynthesis; Magnesium;
KW   Membrane; Reference proteome; Transferase; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..260
FT                   /note="Adenosylcobinamide-GDP ribazoletransferase"
FT                   /id="PRO_1000083261"
FT   TRANSMEM        3..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
FT   TRANSMEM        36..56
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
FT   TRANSMEM        60..80
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
FT   TRANSMEM        108..128
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
FT   TRANSMEM        133..153
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
FT   TRANSMEM        180..200
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
FT   TRANSMEM        206..226
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
FT   TRANSMEM        239..259
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00719"
SQ   SEQUENCE   260 AA;  27886 MW;  E1C7C525C423DAD0 CRC64;
     MRAPLWLRDL AGAWIFYSVL PAWPGLKPRF ERIARFAPWI GLVLGGLQSF LWLVLIRADW
     PTSAVTLLVI GLGAWLSGGL HLDGLMDTAD GLAAGRERCL QAMDDSCVGA SGVQALLVVV
     LLQIASLLRL GSLAPLALLI AAFWGRCAPL WAMARFFYLR EGQAGTASFH RRYRKGWQEA
     LPACLVLLLA LTVVPSLMIV GWPSQMVLMA GIGVGVLPAF LVPELLGRRL GGHSGDSYGA
     SVVLVETITL LLLAVLLPAG