ID F8E5F9_FLESM Unreviewed; 326 AA.
AC F8E5F9;
DT 21-SEP-2011, integrated into UniProtKB/TrEMBL.
DT 21-SEP-2011, sequence version 1.
DT 27-MAR-2024, entry version 65.
DE RecName: Full=Methylthioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
DE Short=M1Pi {ECO:0000256|HAMAP-Rule:MF_01678};
DE Short=MTR-1-P isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
DE EC=5.3.1.23 {ECO:0000256|HAMAP-Rule:MF_01678};
DE AltName: Full=S-methyl-5-thioribose-1-phosphate isomerase {ECO:0000256|HAMAP-Rule:MF_01678};
GN Name=mtnA {ECO:0000256|HAMAP-Rule:MF_01678};
GN OrderedLocusNames=Flexsi_2097 {ECO:0000313|EMBL:AEI15722.1};
OS Flexistipes sinusarabici (strain ATCC 49648 / DSM 4947 / MAS 10).
OC Bacteria; Deferribacterota; Deferribacteres; Deferribacterales;
OC Flexistipitaceae; Flexistipes.
OX NCBI_TaxID=717231 {ECO:0000313|EMBL:AEI15722.1, ECO:0000313|Proteomes:UP000006621};
RN [1] {ECO:0000313|EMBL:AEI15722.1, ECO:0000313|Proteomes:UP000006621}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 4947 / MAS 10 {ECO:0000313|Proteomes:UP000006621};
RX PubMed=22180813; DOI=10.4056/sigs.2235024;
RA Lapidus A., Chertkov O., Nolan M., Lucas S., Hammon N., Deshpande S.,
RA Cheng J.F., Tapia R., Han C., Goodwin L., Pitluck S., Liolios K.,
RA Pagani I., Ivanova N., Huntemann M., Mavromatis K., Mikhailova N., Pati A.,
RA Chen A., Palaniappan K., Land M., Hauser L., Brambilla E.M., Rohde M.,
RA Abt B., Spring S., Goker M., Bristow J., Eisen J.A., Markowitz V.,
RA Hugenholtz P., Kyrpides N.C., Klenk H.P., Woyke T.;
RT "Genome sequence of the moderately thermophilic halophile Flexistipes
RT sinusarabici strain (MAS10).";
RL Stand. Genomic Sci. 5:86-96(2011).
RN [2] {ECO:0000313|Proteomes:UP000006621}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 4947 / MAS 10 {ECO:0000313|Proteomes:UP000006621};
RA Lucas S., Han J., Lapidus A., Bruce D., Goodwin L., Pitluck S., Peters L.,
RA Kyrpides N., Mavromatis K., Ivanova N., Mikhailova N., Chertkov O.,
RA Detter J.C., Tapia R., Han C., Land M., Hauser L., Markowitz V.,
RA Cheng J.-F., Hugenholtz P., Woyke T., Wu D., Spring S., Schroeder M.,
RA Brambilla E., Klenk H.-P., Eisen J.A.;
RT "The complete genome of Flexistipes sinusarabici DSM 4947.";
RL Submitted (JUN-2011) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the interconversion of methylthioribose-1-phosphate
CC (MTR-1-P) into methylthioribulose-1-phosphate (MTRu-1-P).
CC {ECO:0000256|HAMAP-Rule:MF_01678}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=S-methyl-5-thio-alpha-D-ribose 1-phosphate = S-methyl-5-thio-
CC D-ribulose 1-phosphate; Xref=Rhea:RHEA:19989, ChEBI:CHEBI:58533,
CC ChEBI:CHEBI:58548; EC=5.3.1.23; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_01678};
CC -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via salvage
CC pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate:
CC step 1/6. {ECO:0000256|HAMAP-Rule:MF_01678}.
CC -!- SIMILARITY: Belongs to the EIF-2B alpha/beta/delta subunits family.
CC MtnA subfamily. {ECO:0000256|HAMAP-Rule:MF_01678}.
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DR EMBL; CP002858; AEI15722.1; -; Genomic_DNA.
DR RefSeq; WP_013887169.1; NC_015672.1.
DR AlphaFoldDB; F8E5F9; -.
DR STRING; 717231.Flexsi_2097; -.
DR KEGG; fsi:Flexsi_2097; -.
DR eggNOG; COG0182; Bacteria.
DR HOGENOM; CLU_016218_1_2_0; -.
DR OrthoDB; 9803436at2; -.
DR UniPathway; UPA00904; UER00874.
DR Proteomes; UP000006621; Chromosome.
DR GO; GO:0046523; F:S-methyl-5-thioribose-1-phosphate isomerase 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 Gene3D; 1.20.120.420; translation initiation factor eif-2b, domain 1; 1.
DR HAMAP; MF_01678; Salvage_MtnA; 1.
DR InterPro; IPR000649; IF-2B-related.
DR InterPro; IPR005251; IF-M1Pi.
DR InterPro; IPR042529; IF_2B-like_C.
DR InterPro; IPR011559; Initiation_fac_2B_a/b/d.
DR InterPro; IPR027363; M1Pi_N.
DR InterPro; IPR037171; NagB/RpiA_transferase-like.
DR NCBIfam; TIGR00524; eIF-2B_rel; 1.
DR NCBIfam; TIGR00512; salvage_mtnA; 1.
DR PANTHER; PTHR43475; METHYLTHIORIBOSE-1-PHOSPHATE ISOMERASE; 1.
DR PANTHER; PTHR43475:SF1; METHYLTHIORIBOSE-1-PHOSPHATE ISOMERASE; 1.
DR Pfam; PF01008; IF-2B; 1.
DR SUPFAM; SSF100950; NagB/RpiA/CoA transferase-like; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|HAMAP-Rule:MF_01678};
KW Isomerase {ECO:0000256|ARBA:ARBA00023235, ECO:0000256|HAMAP-Rule:MF_01678};
KW Methionine biosynthesis {ECO:0000256|HAMAP-Rule:MF_01678};
KW Reference proteome {ECO:0000313|Proteomes:UP000006621}.
FT ACT_SITE 220
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 45..47
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 79
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 179
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT BINDING 230..231
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
FT SITE 140
FT /note="Transition state stabilizer"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01678"
SQ SEQUENCE 326 AA; 36154 MW; D883EE622FE140D6 CRC64;
MIRPIIYDNN ILKLLDQRKL PSEQIYCECS DFDSIVEAIR SMKVRGAPAI GVAAAFGFYF
GIRDGLNADK VYSKLFDTRP TAVNLKWGLD RMKESFEKYG ENYLEKTAIE IFDEDVKTNK
KLSSHGASLF KGGENILTHC NAGALATAGY GTALGVIRSV FYKTKNIHVY VDETRPFFQG
SRLTSFELRE EGIEHTVICD NMAGFLMNSG IVDKVIVGAD RIACNGDAAN KIGTYQLAVL
SGFHNIPFYI AAPVSSIDFS LKSGEEIPIE YRDVNEVAYC GGSRIVPEGI DILNPAFDVT
PHNLITAFIT EKGVFQSEDI KNIQRR
//
