ID K9T925_9CYAN Unreviewed; 305 AA.
AC K9T925;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 24-JAN-2024, entry version 57.
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 ORFNames=Ple7327_3283 {ECO:0000313|EMBL:AFY78504.1};
OS Pleurocapsa sp. PCC 7327.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Pleurocapsales; Hyellaceae;
OC Pleurocapsa.
OX NCBI_TaxID=118163 {ECO:0000313|EMBL:AFY78504.1, ECO:0000313|Proteomes:UP000010382};
RN [1] {ECO:0000313|EMBL:AFY78504.1, ECO:0000313|Proteomes:UP000010382}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7327 {ECO:0000313|EMBL:AFY78504.1,
RC ECO:0000313|Proteomes:UP000010382};
RG US DOE Joint Genome Institute;
RA Gugger M., Coursin T., Rippka R., Tandeau De Marsac N., Huntemann M.,
RA Wei C.-L., Han J., Detter J.C., Han C., Tapia R., Chen A., Kyrpides N.,
RA Mavromatis K., Markowitz V., Szeto E., Ivanova N., Pagani I., Pati A.,
RA Goodwin L., Nordberg H.P., Cantor M.N., Hua S.X., Woyke T., Kerfeld C.A.;
RT "Finished genome of Pleurocapsa sp. PCC 7327.";
RL Submitted (MAY-2012) 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; CP003590; AFY78504.1; -; Genomic_DNA.
DR RefSeq; WP_015144803.1; NC_019689.1.
DR AlphaFoldDB; K9T925; -.
DR STRING; 118163.Ple7327_3283; -.
DR KEGG; plp:Ple7327_3283; -.
DR PATRIC; fig|118163.3.peg.3656; -.
DR eggNOG; COG2103; Bacteria.
DR HOGENOM; CLU_049049_1_1_3; -.
DR UniPathway; UPA00342; -.
DR Proteomes; UP000010382; 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; PF20741; GKRP-like_C; 1.
DR Pfam; PF13580; SIS_2; 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:UP000010382}.
FT DOMAIN 59..222
FT /note="SIS"
FT /evidence="ECO:0000259|PROSITE:PS51464"
FT ACT_SITE 87
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00068"
FT ACT_SITE 118
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00068"
SQ SEQUENCE 305 AA; 32828 MW; CE9F17E0BE217017 CRC64;
METLEERGHL LTEQINPNSR NLDGLTSLEL VDLFNQEDAQ TLAAIAKARM ELARAIDLAA
ESLRRGGRLF YVGAGTSGRL GVLDAAECPP TFCTPPEMVQ GIIAGGATAL VRSSEDLEDR
KEDGAAAIAE RRINELDVVV GITAGGTTPF VHGAIEAAKQ RGATTIAISC VPAEQVAIHA
DVDIRLLTGP EVLAGSTRLK AGTATKMALN ILSTGVMVRQ GKVYGNRMVD VAVTNRKLRD
RALRILQDIT QLSRQEADKL LERSGKRVKL ALLMHWSGLD AEAGDRLLER HQGNLRAALQ
DRTQL
//
