ID   APAH_TERTT              Reviewed;         271 AA.
AC   C5BPC0;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   28-JUL-2009, sequence version 1.
DT   25-MAY-2022, entry version 72.
DE   RecName: Full=Bis(5'-nucleosyl)-tetraphosphatase, symmetrical {ECO:0000255|HAMAP-Rule:MF_00199};
DE            EC=3.6.1.41 {ECO:0000255|HAMAP-Rule:MF_00199};
DE   AltName: Full=Ap4A hydrolase {ECO:0000255|HAMAP-Rule:MF_00199};
DE   AltName: Full=Diadenosine 5',5'''-P1,P4-tetraphosphate pyrophosphohydrolase {ECO:0000255|HAMAP-Rule:MF_00199};
DE   AltName: Full=Diadenosine tetraphosphatase {ECO:0000255|HAMAP-Rule:MF_00199};
GN   Name=apaH {ECO:0000255|HAMAP-Rule:MF_00199}; OrderedLocusNames=TERTU_3147;
OS   Teredinibacter turnerae (strain ATCC 39867 / T7901).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Cellvibrionales;
OC   Cellvibrionaceae; Teredinibacter.
OX   NCBI_TaxID=377629;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 39867 / T7901;
RX   PubMed=19568419; DOI=10.1371/journal.pone.0006085;
RA   Yang J.C., Madupu R., Durkin A.S., Ekborg N.A., Pedamallu C.S.,
RA   Hostetler J.B., Radune D., Toms B.S., Henrissat B., Coutinho P.M.,
RA   Schwarz S., Field L., Trindade-Silva A.E., Soares C.A.G., Elshahawi S.,
RA   Hanora A., Schmidt E.W., Haygood M.G., Posfai J., Benner J., Madinger C.,
RA   Nove J., Anton B., Chaudhary K., Foster J., Holman A., Kumar S.,
RA   Lessard P.A., Luyten Y.A., Slatko B., Wood N., Wu B., Teplitski M.,
RA   Mougous J.D., Ward N., Eisen J.A., Badger J.H., Distel D.L.;
RT   "The complete genome of Teredinibacter turnerae T7901: an intracellular
RT   endosymbiont of marine wood-boring bivalves (shipworms).";
RL   PLoS ONE 4:E6085-E6085(2009).
CC   -!- FUNCTION: Hydrolyzes diadenosine 5',5'''-P1,P4-tetraphosphate to yield
CC       ADP. {ECO:0000255|HAMAP-Rule:MF_00199}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + P(1),P(4)-bis(5'-adenosyl) tetraphosphate = 2 ADP + 2
CC         H(+); Xref=Rhea:RHEA:24252, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:58141, ChEBI:CHEBI:456216; EC=3.6.1.41;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00199};
CC   -!- SIMILARITY: Belongs to the Ap4A hydrolase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00199}.
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DR   EMBL; CP001614; ACR13427.1; -; Genomic_DNA.
DR   RefSeq; WP_015819541.1; NC_012997.1.
DR   AlphaFoldDB; C5BPC0; -.
DR   SMR; C5BPC0; -.
DR   STRING; 377629.TERTU_3147; -.
DR   EnsemblBacteria; ACR13427; ACR13427; TERTU_3147.
DR   KEGG; ttu:TERTU_3147; -.
DR   eggNOG; COG0639; Bacteria.
DR   HOGENOM; CLU_056184_2_0_6; -.
DR   OMA; INAFTRM; -.
DR   OrthoDB; 900869at2; -.
DR   Proteomes; UP000009080; Chromosome.
DR   GO; GO:0008803; F:bis(5'-nucleosyl)-tetraphosphatase (symmetrical) activity; IEA:UniProtKB-UniRule.
DR   CDD; cd07422; MPP_ApaH; 1.
DR   Gene3D; 3.60.21.10; -; 1.
DR   HAMAP; MF_00199; ApaH; 1.
DR   InterPro; IPR004617; ApaH.
DR   InterPro; IPR004843; Calcineurin-like_PHP_ApaH.
DR   InterPro; IPR029052; Metallo-depent_PP-like.
DR   Pfam; PF00149; Metallophos; 1.
DR   PIRSF; PIRSF000903; B5n-ttraPtase_sm; 1.
DR   SUPFAM; SSF56300; SSF56300; 1.
DR   TIGRFAMs; TIGR00668; apaH; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Reference proteome.
FT   CHAIN           1..271
FT                   /note="Bis(5'-nucleosyl)-tetraphosphatase, symmetrical"
FT                   /id="PRO_1000204089"
SQ   SEQUENCE   271 AA;  30753 MW;  CB74F8DE8FB2DA40 CRC64;
     MPTYAIGDVQ GCLKALERLL DKLNFDERND RLWFAGDLVN RGENSLGVLR LVYGLGDAAV
     VVLGNHDLHL LSAIAGIKKI RPDNEMYRIL QAPDKKQLVK WLRNRPILHH DEITGFTMVH
     AGIPPNWDLA EAKAYAREVE AAVSKKENTR YLEAMYGDEP NRWSESLRGY TRLRVITNYF
     TRMRFCDGRG KLEFLAKTGP DEPPAGFAPW FSHKNHACRN DRILFGHWAA LMGKTHHPNF
     ISLDTGCVWD GALTAYCLEN GRRISVDCCS L