ID F0RXN3_SPHGB Unreviewed; 302 AA.
AC F0RXN3;
DT 03-MAY-2011, integrated into UniProtKB/TrEMBL.
DT 03-MAY-2011, sequence version 1.
DT 27-MAR-2024, entry version 67.
DE RecName: Full=N-acetylmuramic acid 6-phosphate etherase {ECO:0000256|HAMAP-Rule:MF_00068};
DE Short=MurNAc-6-P etherase {ECO:0000256|HAMAP-Rule:MF_00068};
DE EC=4.2.1.126 {ECO:0000256|HAMAP-Rule:MF_00068};
DE AltName: Full=N-acetylmuramic acid 6-phosphate hydrolase {ECO:0000256|HAMAP-Rule:MF_00068};
DE AltName: Full=N-acetylmuramic acid 6-phosphate lyase {ECO:0000256|HAMAP-Rule:MF_00068};
GN Name=murQ {ECO:0000256|HAMAP-Rule:MF_00068};
GN OrderedLocusNames=SpiBuddy_0244 {ECO:0000313|EMBL:ADY12083.1};
OS Sphaerochaeta globosa (strain ATCC BAA-1886 / DSM 22777 / Buddy)
OS (Spirochaeta sp. (strain Buddy)).
OC Bacteria; Spirochaetota; Spirochaetia; Spirochaetales; Sphaerochaetaceae;
OC Sphaerochaeta.
OX NCBI_TaxID=158189 {ECO:0000313|EMBL:ADY12083.1, ECO:0000313|Proteomes:UP000008466};
RN [1] {ECO:0000313|Proteomes:UP000008466}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-1886 / DSM 22777 / Buddy
RC {ECO:0000313|Proteomes:UP000008466};
RA Lucas S., Copeland A., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA Zeytun A., Detter J.C., Han C., Tapia R., Land M., Hauser L., Kyrpides N.,
RA Ivanova N., Mikhailova N., Pagani I., Ritalahti K.M., Loeffler F.E.,
RA Woyke T.;
RT "Complete sequence of Spirochaeta sp. Buddy.";
RL Submitted (FEB-2011) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Specifically catalyzes the cleavage of the D-lactyl ether
CC substituent of MurNAc 6-phosphate, producing GlcNAc 6-phosphate and D-
CC lactate. {ECO:0000256|HAMAP-Rule:MF_00068}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + N-acetyl-D-muramate 6-phosphate = (R)-lactate + N-
CC acetyl-D-glucosamine 6-phosphate; Xref=Rhea:RHEA:26410,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:16004, ChEBI:CHEBI:57513,
CC ChEBI:CHEBI:58722; EC=4.2.1.126; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00068};
CC -!- PATHWAY: Amino-sugar metabolism; N-acetylmuramate degradation.
CC {ECO:0000256|HAMAP-Rule:MF_00068}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_00068}.
CC -!- MISCELLANEOUS: A lyase-type mechanism (elimination/hydration) is
CC suggested for the cleavage of the lactyl ether bond of MurNAc 6-
CC phosphate, with the formation of an alpha,beta-unsaturated aldehyde
CC intermediate with (E)-stereochemistry, followed by the syn addition of
CC water to give product. {ECO:0000256|HAMAP-Rule:MF_00068}.
CC -!- SIMILARITY: Belongs to the GCKR-like family. MurNAc-6-P etherase
CC subfamily. {ECO:0000256|HAMAP-Rule:MF_00068}.
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DR EMBL; CP002541; ADY12083.1; -; Genomic_DNA.
DR RefSeq; WP_013605936.1; NC_015152.1.
DR AlphaFoldDB; F0RXN3; -.
DR STRING; 158189.SpiBuddy_0244; -.
DR KEGG; sbu:SpiBuddy_0244; -.
DR eggNOG; COG2103; Bacteria.
DR HOGENOM; CLU_049049_1_1_12; -.
DR OrthoDB; 9813395at2; -.
DR UniPathway; UPA00342; -.
DR Proteomes; UP000008466; Chromosome.
DR GO; GO:0097367; F:carbohydrate derivative binding; IEA:InterPro.
DR GO; GO:0016835; F:carbon-oxygen lyase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046348; P:amino sugar catabolic process; IEA:InterPro.
DR GO; GO:0005975; P:carbohydrate metabolic process; IEA:UniProtKB-KW.
DR GO; GO:0097173; P:N-acetylmuramic acid catabolic process; IEA:UniProtKB-UniPathway.
DR CDD; cd05007; SIS_Etherase; 1.
DR Gene3D; 1.10.8.1080; -; 1.
DR HAMAP; MF_00068; MurQ; 1.
DR InterPro; IPR005488; Etherase_MurQ.
DR InterPro; IPR005486; Glucokinase_regulatory_CS.
DR InterPro; IPR040190; MURQ/GCKR.
DR InterPro; IPR001347; SIS_dom.
DR InterPro; IPR046348; SIS_dom_sf.
DR NCBIfam; TIGR00274; N-acetylmuramic acid 6-phosphate etherase; 1.
DR PANTHER; PTHR10088; GLUCOKINASE REGULATORY PROTEIN; 1.
DR PANTHER; PTHR10088:SF4; GLUCOKINASE REGULATORY PROTEIN; 1.
DR Pfam; PF01380; SIS; 1.
DR SUPFAM; SSF53697; SIS domain; 1.
DR PROSITE; PS01272; GCKR; 1.
DR PROSITE; PS51464; SIS; 1.
PE 3: Inferred from homology;
KW Carbohydrate metabolism {ECO:0000256|ARBA:ARBA00023277, ECO:0000256|HAMAP-
KW Rule:MF_00068};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00068};
KW Reference proteome {ECO:0000313|Proteomes:UP000008466}.
FT DOMAIN 55..218
FT /note="SIS"
FT /evidence="ECO:0000259|PROSITE:PS51464"
FT ACT_SITE 83
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00068"
FT ACT_SITE 114
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00068"
SQ SEQUENCE 302 AA; 32108 MW; 0CFF89AEE95EA67E CRC64;
MQSSLPTTEQ RNPASYRIDT KSTLEILSII NEEDRKVPLA VGDCISVIAS LVDDVVLSFK
KGGRLFYIGA GTSGRLGVLD ASECPPTFGV PPTMVQGIIA GGLPALTNAI ESAEDNATAG
VLELQGRSFT KDDVLVGITA SGQAPYVIGA MAWAQSIGAK VGAISCNEHS AVFDHADHKI
YVAVGAEIIT GSTRMKSGTA QKLVLNMITT ASMIRIGKVY NNLMVDLLPL NAKLVDRAKR
LIIEVTGCSR VEAEDLYKHS KGNIRVASLM HMLKVDALEA RRLLDESDGS INRALDKKGV
SV
//
