ID   PHS_HALSA               Reviewed;          91 AA.
AC   Q9HP73;
DT   29-AUG-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2001, sequence version 1.
DT   25-MAY-2022, entry version 101.
DE   RecName: Full=Putative pterin-4-alpha-carbinolamine dehydratase;
DE            Short=PHS;
DE            EC=4.2.1.96;
DE   AltName: Full=4-alpha-hydroxy-tetrahydropterin dehydratase;
DE   AltName: Full=Pterin carbinolamine dehydratase;
DE            Short=PCD;
GN   OrderedLocusNames=VNG_1773G;
OS   Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1)
OS   (Halobacterium halobium).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC   Halobacteriaceae; Halobacterium.
OX   NCBI_TaxID=64091;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700922 / JCM 11081 / NRC-1;
RX   PubMed=11016950; DOI=10.1073/pnas.190337797;
RA   Ng W.V., Kennedy S.P., Mahairas G.G., Berquist B., Pan M., Shukla H.D.,
RA   Lasky S.R., Baliga N.S., Thorsson V., Sbrogna J., Swartzell S., Weir D.,
RA   Hall J., Dahl T.A., Welti R., Goo Y.A., Leithauser B., Keller K., Cruz R.,
RA   Danson M.J., Hough D.W., Maddocks D.G., Jablonski P.E., Krebs M.P.,
RA   Angevine C.M., Dale H., Isenbarger T.A., Peck R.F., Pohlschroder M.,
RA   Spudich J.L., Jung K.-H., Alam M., Freitas T., Hou S., Daniels C.J.,
RA   Dennis P.P., Omer A.D., Ebhardt H., Lowe T.M., Liang P., Riley M., Hood L.,
RA   DasSarma S.;
RT   "Genome sequence of Halobacterium species NRC-1.";
RL   Proc. Natl. Acad. Sci. U.S.A. 97:12176-12181(2000).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(4aS,6R)-4a-hydroxy-L-erythro-5,6,7,8-tetrahydrobiopterin =
CC         (6R)-L-erythro-6,7-dihydrobiopterin + H2O; Xref=Rhea:RHEA:11920,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15642, ChEBI:CHEBI:43120; EC=4.2.1.96;
CC   -!- SIMILARITY: Belongs to the pterin-4-alpha-carbinolamine dehydratase
CC       family. {ECO:0000305}.
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DR   EMBL; AE004437; AAG19997.1; -; Genomic_DNA.
DR   PIR; A84329; A84329.
DR   RefSeq; WP_010903295.1; NC_002607.1.
DR   AlphaFoldDB; Q9HP73; -.
DR   SMR; Q9HP73; -.
DR   STRING; 64091.VNG_1773G; -.
DR   PaxDb; Q9HP73; -.
DR   EnsemblBacteria; AAG19997; AAG19997; VNG_1773G.
DR   GeneID; 5954092; -.
DR   KEGG; hal:VNG_1773G; -.
DR   PATRIC; fig|64091.14.peg.1352; -.
DR   HOGENOM; CLU_081974_4_3_2; -.
DR   InParanoid; Q9HP73; -.
DR   OMA; NFAQMVG; -.
DR   OrthoDB; 120013at2157; -.
DR   PhylomeDB; Q9HP73; -.
DR   Proteomes; UP000000554; Chromosome.
DR   GO; GO:0008124; F:4-alpha-hydroxytetrahydrobiopterin dehydratase activity; IBA:GO_Central.
DR   GO; GO:0006729; P:tetrahydrobiopterin biosynthetic process; IEA:InterPro.
DR   Gene3D; 3.30.1360.20; -; 1.
DR   HAMAP; MF_00434; Pterin_4_alpha; 1.
DR   InterPro; IPR036428; PCD_sf.
DR   InterPro; IPR001533; Pterin_deHydtase.
DR   PANTHER; PTHR12599; PTHR12599; 1.
DR   Pfam; PF01329; Pterin_4a; 1.
DR   SUPFAM; SSF55248; SSF55248; 1.
PE   3: Inferred from homology;
KW   Lyase; Reference proteome.
FT   CHAIN           1..91
FT                   /note="Putative pterin-4-alpha-carbinolamine dehydratase"
FT                   /id="PRO_0000063109"
SQ   SEQUENCE   91 AA;  10489 MW;  7ED08444BEE4AD5C CRC64;
     MSDRLDDDTI SDRLPDDWIH DGDAITRTYT FEEYLDGVAF ASEVGDLADE AFHHPEITIR
     YDEVEVRFTD HEAGGVTSQD IELARRTDDR R