ID   MTNA2_TRYCC             Reviewed;         372 AA.
AC   Q4D6B2;
DT   30-NOV-2010, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2005, sequence version 1.
DT   25-MAY-2022, entry version 67.
DE   RecName: Full=Methylthioribose-1-phosphate isomerase 2 {ECO:0000255|HAMAP-Rule:MF_03119};
DE            Short=M1Pi 2 {ECO:0000255|HAMAP-Rule:MF_03119};
DE            Short=MTR-1-P isomerase 2 {ECO:0000255|HAMAP-Rule:MF_03119};
DE            EC=5.3.1.23 {ECO:0000255|HAMAP-Rule:MF_03119};
DE   AltName: Full=S-methyl-5-thioribose-1-phosphate isomerase 2 {ECO:0000255|HAMAP-Rule:MF_03119};
DE   AltName: Full=Translation initiation factor eIF-2B subunit alpha/beta/delta-like protein 2 {ECO:0000255|HAMAP-Rule:MF_03119};
GN   ORFNames=Tc00.1047053508269.30;
OS   Trypanosoma cruzi (strain CL Brener).
OC   Eukaryota; Discoba; Euglenozoa; Kinetoplastea; Metakinetoplastina;
OC   Trypanosomatida; Trypanosomatidae; Trypanosoma; Schizotrypanum.
OX   NCBI_TaxID=353153;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CL Brener;
RX   PubMed=16020725; DOI=10.1126/science.1112631;
RA   El-Sayed N.M.A., Myler P.J., Bartholomeu D.C., Nilsson D., Aggarwal G.,
RA   Tran A.-N., Ghedin E., Worthey E.A., Delcher A.L., Blandin G.,
RA   Westenberger S.J., Caler E., Cerqueira G.C., Branche C., Haas B.,
RA   Anupama A., Arner E., Aslund L., Attipoe P., Bontempi E., Bringaud F.,
RA   Burton P., Cadag E., Campbell D.A., Carrington M., Crabtree J., Darban H.,
RA   da Silveira J.F., de Jong P., Edwards K., Englund P.T., Fazelina G.,
RA   Feldblyum T., Ferella M., Frasch A.C., Gull K., Horn D., Hou L., Huang Y.,
RA   Kindlund E., Klingbeil M., Kluge S., Koo H., Lacerda D., Levin M.J.,
RA   Lorenzi H., Louie T., Machado C.R., McCulloch R., McKenna A., Mizuno Y.,
RA   Mottram J.C., Nelson S., Ochaya S., Osoegawa K., Pai G., Parsons M.,
RA   Pentony M., Pettersson U., Pop M., Ramirez J.L., Rinta J., Robertson L.,
RA   Salzberg S.L., Sanchez D.O., Seyler A., Sharma R., Shetty J., Simpson A.J.,
RA   Sisk E., Tammi M.T., Tarleton R., Teixeira S., Van Aken S., Vogt C.,
RA   Ward P.N., Wickstead B., Wortman J., White O., Fraser C.M., Stuart K.D.,
RA   Andersson B.;
RT   "The genome sequence of Trypanosoma cruzi, etiologic agent of Chagas
RT   disease.";
RL   Science 309:409-415(2005).
CC   -!- FUNCTION: Catalyzes the interconversion of methylthioribose-1-phosphate
CC       (MTR-1-P) into methylthioribulose-1-phosphate (MTRu-1-P).
CC       {ECO:0000255|HAMAP-Rule:MF_03119}.
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:0000255|HAMAP-
CC         Rule:MF_03119};
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:0000255|HAMAP-Rule:MF_03119}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03119}.
CC       Nucleus {ECO:0000255|HAMAP-Rule:MF_03119}.
CC   -!- SIMILARITY: Belongs to the eIF-2B alpha/beta/delta subunits family.
CC       MtnA subfamily. {ECO:0000255|HAMAP-Rule:MF_03119}.
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DR   EMBL; AAHK01000940; EAN88062.1; -; Genomic_DNA.
DR   RefSeq; XP_809913.1; XM_804820.1.
DR   AlphaFoldDB; Q4D6B2; -.
DR   SMR; Q4D6B2; -.
DR   STRING; 5693.XP_809913.1; -.
DR   PaxDb; Q4D6B2; -.
DR   EnsemblProtists; EAN88062; EAN88062; Tc00.1047053508269.30.
DR   GeneID; 3540589; -.
DR   KEGG; tcr:508269.30; -.
DR   eggNOG; KOG1468; Eukaryota.
DR   OMA; RLWVDET; -.
DR   OrthoDB; 1410886at2759; -.
DR   UniPathway; UPA00904; UER00874.
DR   Proteomes; UP000002296; Unassembled WGS sequence.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
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; -; 1.
DR   Gene3D; 3.40.50.10470; -; 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   Pfam; PF01008; IF-2B; 1.
DR   SUPFAM; SSF100950; SSF100950; 1.
DR   TIGRFAMs; TIGR00524; eIF-2B_rel; 1.
DR   TIGRFAMs; TIGR00512; salvage_mtnA; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Isomerase; Methionine biosynthesis;
KW   Nucleus; Reference proteome.
FT   CHAIN           1..372
FT                   /note="Methylthioribose-1-phosphate isomerase 2"
FT                   /id="PRO_0000402005"
FT   ACT_SITE        254
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
FT   SITE            174
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03119"
SQ   SEQUENCE   372 AA;  39795 MW;  8DDD6F92E5167B37 CRC64;
     MARAHNATLE SIQYARGTLR LLDQRKLPLE TVFDEILTVD DIWTAIKEMR VRGAPAIAVS
     AALAIAVAAG NELKKKDGAC NSVDGTRRFL LESCDTVMTA RPTAVNLSKT LIQLKRDIAD
     VTANTAGGLV EACAVLAEKI YAEDVACNEG IMRHGAAHLT QLVKKSKVSV LTICNTGALA
     TSRYGTALGV VRQLFYEGKL EQVYACETRP WNQGARLTVY ECVQENIPCT LICDSAVSAL
     MGSRPIDAVI VGADRICRNG DTANKIGTCN LAVAAAHYGV PFFVAAPSTT LDPMTADGES
     VVIEERETME LTHSMATQQR VVAEGPSLRI WNPVFDITPA ALVTGGIITE RGVLQPSATA
     PFFDITRIVS AS