ID   Q4RS21_TETNG            Unreviewed;       137 AA.
AC   Q4RS21;
DT   19-JUL-2005, integrated into UniProtKB/TrEMBL.
DT   19-JUL-2005, sequence version 1.
DT   27-MAR-2024, entry version 100.
DE   RecName: Full=4a-hydroxytetrahydrobiopterin dehydratase {ECO:0000256|ARBA:ARBA00013252};
DE            EC=4.2.1.96 {ECO:0000256|ARBA:ARBA00013252};
GN   Name=PCBD2 {ECO:0000313|Ensembl:ENSTNIP00000019194.1};
GN   ORFNames=GSTENG00029908001 {ECO:0000313|EMBL:CAG08811.1};
OS   Tetraodon nigroviridis (Spotted green pufferfish) (Chelonodon
OS   nigroviridis).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC   Eupercaria; Tetraodontiformes; Tetradontoidea; Tetraodontidae; Tetraodon.
OX   NCBI_TaxID=99883 {ECO:0000313|EMBL:CAG08811.1};
RN   [1] {ECO:0000313|EMBL:CAG08811.1, ECO:0000313|Proteomes:UP000007303}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=15496914; DOI=10.1038/nature03025;
RA   Jaillon O., Aury J.-M., Brunet F., Petit J.-L., Stange-Thomann N.,
RA   Mauceli E., Bouneau L., Fischer C., Ozouf-Costaz C., Bernot A., Nicaud S.,
RA   Jaffe D., Fisher S., Lutfalla G., Dossat C., Segurens B., Dasilva C.,
RA   Salanoubat M., Levy M., Boudet N., Castellano S., Anthouard V., Jubin C.,
RA   Castelli V., Katinka M., Vacherie B., Biemont C., Skalli Z., Cattolico L.,
RA   Poulain J., De Berardinis V., Cruaud C., Duprat S., Brottier P.,
RA   Coutanceau J.-P., Gouzy J., Parra G., Lardier G., Chapple C.,
RA   McKernan K.J., McEwan P., Bosak S., Kellis M., Volff J.-N., Guigo R.,
RA   Zody M.C., Mesirov J., Lindblad-Toh K., Birren B., Nusbaum C., Kahn D.,
RA   Robinson-Rechavi M., Laudet V., Schachter V., Quetier F., Saurin W.,
RA   Scarpelli C., Wincker P., Lander E.S., Weissenbach J., Roest Crollius H.;
RT   "Genome duplication in the teleost fish Tetraodon nigroviridis reveals the
RT   early vertebrate proto-karyotype.";
RL   Nature 431:946-957(2004).
RN   [2] {ECO:0000313|EMBL:CAG08811.1}
RP   NUCLEOTIDE SEQUENCE.
RG   Genoscope;
RG   Whitehead Institute Centre for Genome Research;
RL   Submitted (FEB-2004) to the EMBL/GenBank/DDBJ databases.
RN   [3] {ECO:0000313|Ensembl:ENSTNIP00000019194.1}
RP   IDENTIFICATION.
RG   Ensembl;
RL   Submitted (NOV-2023) to UniProtKB.
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         Evidence={ECO:0000256|ARBA:ARBA00001554};
CC   -!- SIMILARITY: Belongs to the pterin-4-alpha-carbinolamine dehydratase
CC       family. {ECO:0000256|ARBA:ARBA00006472}.
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DR   EMBL; CAAE01015001; CAG08811.1; -; Genomic_DNA.
DR   STRING; 99883.ENSTNIP00000019194; -.
DR   Ensembl; ENSTNIT00000019422.1; ENSTNIP00000019194.1; ENSTNIG00000016103.1.
DR   KEGG; tng:GSTEN00029908G001; -.
DR   GeneTree; ENSGT00390000007221; -.
DR   HOGENOM; CLU_081974_3_0_1; -.
DR   OMA; SHDCGGV; -.
DR   TreeFam; TF300188; -.
DR   Proteomes; UP000007303; Unassembled WGS sequence.
DR   GO; GO:0008124; F:4-alpha-hydroxytetrahydrobiopterin dehydratase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006729; P:tetrahydrobiopterin biosynthetic process; IEA:UniProtKB-KW.
DR   CDD; cd00914; PCD_DCoH_subfamily_b; 1.
DR   Gene3D; 3.30.1360.20; Transcriptional coactivator/pterin dehydratase; 1.
DR   HAMAP; MF_00434; Pterin_4_alpha; 1.
DR   InterPro; IPR036428; PCD_sf.
DR   InterPro; IPR001533; Pterin_deHydtase.
DR   PANTHER; PTHR12599; PTERIN-4-ALPHA-CARBINOLAMINE DEHYDRATASE; 1.
DR   PANTHER; PTHR12599:SF15; PTERIN-4-ALPHA-CARBINOLAMINE DEHYDRATASE 2; 1.
DR   Pfam; PF01329; Pterin_4a; 1.
DR   SUPFAM; SSF55248; PCD-like; 1.
PE   3: Inferred from homology;
KW   Lyase {ECO:0000256|ARBA:ARBA00023239};
KW   Reference proteome {ECO:0000313|Proteomes:UP000007303};
KW   Tetrahydrobiopterin biosynthesis {ECO:0000256|ARBA:ARBA00023007}.
SQ   SEQUENCE   137 AA;  15796 MW;  35D38C71D9F71A6A CRC64;
     MFGLIFALKT SSYRCCCRSV GVNSWFTARN KSANMSSDSH WLSPADREQL LNELRATGWV
     EVENRDAIYK ELHFKNFNQA FGFMSRVALQ AEKMNHHPQW FNVYNKVQIT LTTHDCGGLS
     KRDVKMAKFI DKIALSL
//