ID   NANA_SALPB              Reviewed;         297 AA.
AC   A9N833;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-FEB-2008, sequence version 1.
DT   03-AUG-2022, entry version 77.
DE   RecName: Full=N-acetylneuraminate lyase {ECO:0000255|HAMAP-Rule:MF_01237};
DE            Short=NAL {ECO:0000255|HAMAP-Rule:MF_01237};
DE            Short=Neu5Ac lyase {ECO:0000255|HAMAP-Rule:MF_01237};
DE            EC=4.1.3.3 {ECO:0000255|HAMAP-Rule:MF_01237};
DE   AltName: Full=N-acetylneuraminate pyruvate-lyase {ECO:0000255|HAMAP-Rule:MF_01237};
DE   AltName: Full=N-acetylneuraminic acid aldolase {ECO:0000255|HAMAP-Rule:MF_01237};
DE   AltName: Full=Sialate lyase {ECO:0000255|HAMAP-Rule:MF_01237};
DE   AltName: Full=Sialic acid aldolase {ECO:0000255|HAMAP-Rule:MF_01237};
DE   AltName: Full=Sialic acid lyase {ECO:0000255|HAMAP-Rule:MF_01237};
GN   Name=nanA {ECO:0000255|HAMAP-Rule:MF_01237}; OrderedLocusNames=SPAB_04163;
OS   Salmonella paratyphi B (strain ATCC BAA-1250 / SPB7).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=1016998;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1250 / SPB7;
RG   The Salmonella enterica serovar Paratyphi B Genome Sequencing Project;
RA   McClelland M., Sanderson E.K., Porwollik S., Spieth J., Clifton W.S.,
RA   Fulton R., Cordes M., Wollam A., Shah N., Pepin K., Bhonagiri V., Nash W.,
RA   Johnson M., Thiruvilangam P., Wilson R.;
RL   Submitted (NOV-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the reversible aldol cleavage of N-acetylneuraminic
CC       acid (sialic acid; Neu5Ac) to form pyruvate and N-acetylmannosamine
CC       (ManNAc) via a Schiff base intermediate. {ECO:0000255|HAMAP-
CC       Rule:MF_01237}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=aceneuramate = N-acetyl-D-mannosamine + pyruvate;
CC         Xref=Rhea:RHEA:23296, ChEBI:CHEBI:15361, ChEBI:CHEBI:17122,
CC         ChEBI:CHEBI:173083; EC=4.1.3.3; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01237};
CC   -!- PATHWAY: Amino-sugar metabolism; N-acetylneuraminate degradation; D-
CC       fructose 6-phosphate from N-acetylneuraminate: step 1/5.
CC       {ECO:0000255|HAMAP-Rule:MF_01237}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_01237}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01237}.
CC   -!- SIMILARITY: Belongs to the DapA family. NanA subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01237}.
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DR   EMBL; CP000886; ABX69486.1; -; Genomic_DNA.
DR   RefSeq; WP_001029665.1; NC_010102.1.
DR   AlphaFoldDB; A9N833; -.
DR   SMR; A9N833; -.
DR   KEGG; spq:SPAB_04163; -.
DR   PATRIC; fig|1016998.12.peg.3920; -.
DR   HOGENOM; CLU_049343_6_0_6; -.
DR   OMA; LPPMRYK; -.
DR   BioCyc; SENT1016998:SPAB_RS16925-MON; -.
DR   UniPathway; UPA00629; UER00680.
DR   Proteomes; UP000008556; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0008747; F:N-acetylneuraminate lyase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005975; P:carbohydrate metabolic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0019262; P:N-acetylneuraminate catabolic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd00954; NAL; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_01237; N_acetylneuram_lyase; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR002220; DapA-like.
DR   InterPro; IPR005264; NanA.
DR   InterPro; IPR020625; Schiff_base-form_aldolases_AS.
DR   InterPro; IPR020624; Schiff_base-form_aldolases_CS.
DR   Pfam; PF00701; DHDPS; 1.
DR   PIRSF; PIRSF001365; DHDPS; 1.
DR   PRINTS; PR00146; DHPICSNTHASE.
DR   SMART; SM01130; DHDPS; 1.
DR   TIGRFAMs; TIGR00683; nanA; 1.
DR   PROSITE; PS00665; DHDPS_1; 1.
DR   PROSITE; PS00666; DHDPS_2; 1.
PE   3: Inferred from homology;
KW   Carbohydrate metabolism; Cytoplasm; Lyase; Schiff base.
FT   CHAIN           1..297
FT                   /note="N-acetylneuraminate lyase"
FT                   /id="PRO_1000085739"
FT   ACT_SITE        165
FT                   /note="Schiff-base intermediate with substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01237"
FT   BINDING         47..48
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01237"
FT   SITE            137
FT                   /note="Involved in proton transfer during cleavage"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01237"
SQ   SEQUENCE   297 AA;  32469 MW;  6C6AD21104937C4D CRC64;
     MAKALQGVMA ALLTPFDHQQ QLDSESLRRL VRFNIGQGID GLYVGGSTGE AFVQSLAERE
     QVLEIVAEEA KGKITLIAHV GTVSTAESQQ LASAAKRYGF DAVSAVTPFY YPFSFEEHCD
     HYRAIIDSAD GLPMVVYNIP ALSGVKLTLD QINTLVTLPG VSALKQTSGD LFQMEQIRRA
     HPDLVLYNGY DEIFASGLLA GADGGIGSTY NIMGWRYQGI VQALREGDVA KAQRLQTECN
     KVIDLLIKTG VFRGLKTVLH YMDVLSVPLC RKPFAPVDEK YLPALKALAQ QLMEEKA