MSHA_MYCTK
ID MSHA_MYCTK Reviewed; 480 AA.
AC C6DT68;
DT 02-NOV-2010, integrated into UniProtKB/Swiss-Prot.
DT 01-SEP-2009, sequence version 1.
DT 03-AUG-2022, entry version 64.
DE RecName: Full=D-inositol 3-phosphate glycosyltransferase;
DE EC=2.4.1.250 {ECO:0000255|HAMAP-Rule:MF_01695};
DE AltName: Full=N-acetylglucosamine-inositol-phosphate N-acetylglucosaminyltransferase {ECO:0000255|HAMAP-Rule:MF_01695};
DE Short=GlcNAc-Ins-P N-acetylglucosaminyltransferase {ECO:0000255|HAMAP-Rule:MF_01695};
GN Name=mshA {ECO:0000255|HAMAP-Rule:MF_01695}; OrderedLocusNames=TBMG_00489;
OS Mycobacterium tuberculosis (strain KZN 1435 / MDR).
OC Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC Mycobacterium; Mycobacterium tuberculosis complex.
OX NCBI_TaxID=478434;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KZN 1435 / MDR;
RA Murray M., Pillay M., Borowsky M.L., Young S.K., Zeng Q., Koehrsen M.,
RA Alvarado L., Berlin A.M., Borenstein D., Chen Z., Engels R., Freedman E.,
RA Gellesch M., Goldberg J., Griggs A., Gujja S., Heiman D.I., Hepburn T.A.,
RA Howarth C., Jen D., Larson L., Lewis B., Mehta T., Park D., Pearson M.,
RA Roberts A., Saif S., Shea T.D., Shenoy N., Sisk P., Stolte C., Sykes S.N.,
RA Walk T., White J., Yandava C., Haas B., Nusbaum C., Galagan J., Birren B.;
RT "The genome sequence of Mycobacterium tuberculosis strain KZN 1435.";
RL Submitted (JUL-2009) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the transfer of a N-acetyl-glucosamine moiety to
CC 1D-myo-inositol 3-phosphate to produce 1D-myo-inositol 2-acetamido-2-
CC deoxy-glucopyranoside 3-phosphate in the mycothiol (MSH) biosynthesis
CC pathway (By similarity). MSH and WhiB3 are probably part of a
CC regulatory circuit that mediates gene expression upon acid stress (like
CC that found in host macrophage phagosomes). MSH is one of the major
CC redox buffers which protects bacteria against redox stressors and
CC antibiotics; loss of MSH or ergothioneine (ERG, the other major redox
CC buffer in this bacteria) leads to respiratory alterations and
CC bioenergetic deficiencies that negatively impact virulence (By
CC similarity). {ECO:0000250|UniProtKB:P9WMY7, ECO:0000255|HAMAP-
CC Rule:MF_01695}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=1D-myo-inositol 3-phosphate + UDP-N-acetyl-alpha-D-glucosamine
CC = 1D-myo-inositol 2-acetamido-2-deoxy-alpha-D-glucopyranoside 3-
CC phosphate + H(+) + UDP; Xref=Rhea:RHEA:26188, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:57705, ChEBI:CHEBI:58223, ChEBI:CHEBI:58401,
CC ChEBI:CHEBI:58892; EC=2.4.1.250; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01695};
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01695}.
CC -!- SIMILARITY: Belongs to the glycosyltransferase group 1 family. MshA
CC subfamily. {ECO:0000255|HAMAP-Rule:MF_01695}.
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DR EMBL; CP001658; ACT23520.1; -; Genomic_DNA.
DR RefSeq; WP_003402367.1; NZ_KK341220.1.
DR AlphaFoldDB; C6DT68; -.
DR SMR; C6DT68; -.
DR CAZy; GT4; Glycosyltransferase Family 4.
DR KEGG; mtb:TBMG_00489; -.
DR PATRIC; fig|478434.13.peg.3755; -.
DR HOGENOM; CLU_009583_2_3_11; -.
DR OMA; HTMAKVK; -.
DR GO; GO:0008375; F:acetylglucosaminyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0102710; F:D-inositol-3-phosphate glycosyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0010125; P:mycothiol biosynthetic process; IEA:UniProtKB-UniRule.
DR HAMAP; MF_01695; MshA; 1.
DR InterPro; IPR001296; Glyco_trans_1.
DR InterPro; IPR028098; Glyco_trans_4-like_N.
DR InterPro; IPR017814; Mycothiol_biosynthesis_MshA.
DR Pfam; PF13439; Glyco_transf_4; 1.
DR Pfam; PF00534; Glycos_transf_1; 1.
DR TIGRFAMs; TIGR03449; mycothiol_MshA; 1.
PE 3: Inferred from homology;
KW Glycosyltransferase; Magnesium; Metal-binding; Transferase.
FT CHAIN 1..480
FT /note="D-inositol 3-phosphate glycosyltransferase"
FT /id="PRO_0000400143"
FT REGION 1..42
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 53
FT /ligand="1D-myo-inositol 3-phosphate"
FT /ligand_id="ChEBI:CHEBI:58401"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 59..60
FT /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:57705"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 64..69
FT /ligand="1D-myo-inositol 3-phosphate"
FT /ligand_id="ChEBI:CHEBI:58401"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 67
FT /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:57705"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 122
FT /ligand="1D-myo-inositol 3-phosphate"
FT /ligand_id="ChEBI:CHEBI:58401"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 155
FT /ligand="1D-myo-inositol 3-phosphate"
FT /ligand_id="ChEBI:CHEBI:58401"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 179
FT /ligand="1D-myo-inositol 3-phosphate"
FT /ligand_id="ChEBI:CHEBI:58401"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 199
FT /ligand="1D-myo-inositol 3-phosphate"
FT /ligand_id="ChEBI:CHEBI:58401"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 273
FT /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:57705"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 278
FT /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:57705"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 331
FT /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:57705"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 340
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 341
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 343
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 353
FT /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:57705"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 361
FT /ligand="UDP-N-acetyl-alpha-D-glucosamine"
FT /ligand_id="ChEBI:CHEBI:57705"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
FT BINDING 367
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01695"
SQ SEQUENCE 480 AA; 50541 MW; 2134755E894A9CCF CRC64;
MAGVRHDDGS GLIAQRRPVR GEGATRSRGP SGPSNRNVSA ADDPRRVALL AVHTSPLAQP
GTGDAGGMNV YMLQSALHLA RRGIEVEIFT RATASADPPV VRVAPGVLVR NVVAGPFEGL
DKYDLPTQLC AFAAGVLRAE AVHEPGYYDI VHSHYWLSGQ VGWLARDRWA VPLVHTAHTL
AAVKNAALAD GDGPEPPLRT VGEQQVVDEA DRLIVNTDDE ARQVISLHGA DPARIDVVHP
GVDLDVFRPG DRRAARAALG LPVDERVVAF VGRIQPLKAP DIVLRAAAKL PGVRIIVAGG
PSGSGLASPD GLVRLADELG ISARVTFLPP QSHTDLATLF RAADLVAVPS YSESFGLVAV
EAQACGTPVV AAAVGGLPVA VRDGITGTLV SGHEVGQWAD AIDHLLRLCA GPRGRVMSRA
AARHAATFSW ENTTDALLAS YRRAIGEYNA ERQRRGGEVI SDLVAVGKPR HWTPRRGVGA
