ID L9L3Y9_TUPCH Unreviewed; 355 AA.
AC L9L3Y9;
DT 03-APR-2013, integrated into UniProtKB/TrEMBL.
DT 03-APR-2013, sequence version 1.
DT 24-JAN-2024, entry version 37.
DE RecName: Full=Polyprenol reductase {ECO:0000256|ARBA:ARBA00017362, ECO:0000256|RuleBase:RU367081};
DE EC=1.3.1.22 {ECO:0000256|ARBA:ARBA00012049, ECO:0000256|RuleBase:RU367081};
DE EC=1.3.1.94 {ECO:0000256|ARBA:ARBA00012522, ECO:0000256|RuleBase:RU367081};
GN ORFNames=TREES_T100015847 {ECO:0000313|EMBL:ELW69900.1};
OS Tupaia chinensis (Chinese tree shrew).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Scandentia; Tupaiidae; Tupaia.
OX NCBI_TaxID=246437 {ECO:0000313|EMBL:ELW69900.1, ECO:0000313|Proteomes:UP000011518};
RN [1] {ECO:0000313|Proteomes:UP000011518}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Zhang G., Fan Y., Yao Y., Huang Z.;
RT "Genome of the Chinese tree shrew, a rising model animal genetically
RT related to primates.";
RL Submitted (JUL-2012) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|Proteomes:UP000011518}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=23385571; DOI=10.1038/ncomms2416;
RA Fan Y., Huang Z.Y., Cao C.C., Chen C.S., Chen Y.X., Fan D.D., He J.,
RA Hou H.L., Hu L., Hu X.T., Jiang X.T., Lai R., Lang Y.S., Liang B.,
RA Liao S.G., Mu D., Ma Y.Y., Niu Y.Y., Sun X.Q., Xia J.Q., Xiao J.,
RA Xiong Z.Q., Xu L., Yang L., Zhang Y., Zhao W., Zhao X.D., Zheng Y.T.,
RA Zhou J.M., Zhu Y.B., Zhang G.J., Wang J., Yao Y.G.;
RT "Genome of the Chinese tree shrew.";
RL Nat. Commun. 4:1426-1426(2013).
CC -!- FUNCTION: Also able to convert testosterone (T) into 5-alpha-
CC dihydrotestosterone (DHT). {ECO:0000256|RuleBase:RU367081}.
CC -!- FUNCTION: Plays a key role in early steps of protein N-linked
CC glycosylation by being required for the conversion of polyprenol into
CC dolichol. Dolichols are required for the synthesis of dolichol-linked
CC monosaccharides and the oligosaccharide precursor used for N-
CC glycosylation. Acts as a polyprenol reductase that promotes the
CC reduction of the alpha-isoprene unit of polyprenols into dolichols in a
CC NADP-dependent mechanism. {ECO:0000256|RuleBase:RU367081}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=17beta-hydroxy-5alpha-androstan-3-one + NADP(+) = H(+) + NADPH
CC + testosterone; Xref=Rhea:RHEA:50820, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:16330, ChEBI:CHEBI:17347, ChEBI:CHEBI:57783,
CC ChEBI:CHEBI:58349; EC=1.3.1.22;
CC Evidence={ECO:0000256|ARBA:ARBA00023677};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:50822;
CC Evidence={ECO:0000256|ARBA:ARBA00023677};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 3-oxo-5alpha-steroid + NADP(+) = a 3-oxo-Delta(4)-steroid +
CC H(+) + NADPH; Xref=Rhea:RHEA:54384, ChEBI:CHEBI:13601,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:47909, ChEBI:CHEBI:57783,
CC ChEBI:CHEBI:58349; EC=1.3.1.22;
CC Evidence={ECO:0000256|ARBA:ARBA00033710};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:54386;
CC Evidence={ECO:0000256|ARBA:ARBA00033710};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=androst-4-ene-3,17-dione + H(+) + NADPH = 5alpha-
CC androstan-3,17-dione + NADP(+); Xref=Rhea:RHEA:50816,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:15994, ChEBI:CHEBI:16422,
CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58349;
CC Evidence={ECO:0000256|ARBA:ARBA00023719};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:50818;
CC Evidence={ECO:0000256|ARBA:ARBA00023719};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=di-trans,poly-cis-dolichol + NADP(+) = di-trans,cis-polyprenol
CC + H(+) + NADPH; Xref=Rhea:RHEA:34279, Rhea:RHEA-COMP:9521, Rhea:RHEA-
CC COMP:9525, ChEBI:CHEBI:15378, ChEBI:CHEBI:16091, ChEBI:CHEBI:57783,
CC ChEBI:CHEBI:58349, ChEBI:CHEBI:67132; EC=1.3.1.94;
CC Evidence={ECO:0000256|ARBA:ARBA00033658};
CC PhysiologicalDirection=right-to-left; Xref=Rhea:RHEA:34281;
CC Evidence={ECO:0000256|ARBA:ARBA00033658};
CC -!- PATHWAY: Protein modification; protein glycosylation.
CC {ECO:0000256|RuleBase:RU367081}.
CC -!- SUBCELLULAR LOCATION: Endoplasmic reticulum membrane
CC {ECO:0000256|RuleBase:RU367081}. Membrane
CC {ECO:0000256|ARBA:ARBA00004141}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004141}.
CC -!- SIMILARITY: Belongs to the steroid 5-alpha reductase family. Polyprenol
CC reductase subfamily. {ECO:0000256|ARBA:ARBA00008951,
CC ECO:0000256|RuleBase:RU367081}.
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DR EMBL; KB320513; ELW69900.1; -; Genomic_DNA.
DR AlphaFoldDB; L9L3Y9; -.
DR STRING; 246437.L9L3Y9; -.
DR eggNOG; KOG1640; Eukaryota.
DR InParanoid; L9L3Y9; -.
DR UniPathway; UPA00378; -.
DR Proteomes; UP000011518; Unassembled WGS sequence.
DR GO; GO:0005789; C:endoplasmic reticulum membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0003865; F:3-oxo-5-alpha-steroid 4-dehydrogenase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0047751; F:3-oxo-5alpha-steroid 4-dehydrogenase (NADP+); IEA:UniProtKB-UniRule.
DR GO; GO:0102389; F:polyprenol reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006488; P:dolichol-linked oligosaccharide biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0016095; P:polyprenol catabolic process; IEA:UniProtKB-UniRule.
DR InterPro; IPR001104; 3-oxo-5_a-steroid_4-DH_C.
DR InterPro; IPR039698; Dfg10/SRD5A3.
DR PANTHER; PTHR14624; DFG10 PROTEIN; 1.
DR PANTHER; PTHR14624:SF0; POLYPRENOL REDUCTASE; 1.
DR Pfam; PF02544; Steroid_dh; 1.
DR PROSITE; PS50244; S5A_REDUCTASE; 1.
PE 3: Inferred from homology;
KW Endoplasmic reticulum {ECO:0000256|RuleBase:RU367081};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|RuleBase:RU367081};
KW NADP {ECO:0000256|RuleBase:RU367081};
KW Oxidoreductase {ECO:0000256|RuleBase:RU367081};
KW Reference proteome {ECO:0000313|Proteomes:UP000011518};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692,
KW ECO:0000256|RuleBase:RU367081};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|RuleBase:RU367081}.
FT TRANSMEM 116..137
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU367081"
FT TRANSMEM 157..176
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU367081"
FT TRANSMEM 197..218
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU367081"
FT TRANSMEM 238..255
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU367081"
FT TRANSMEM 315..336
FT /note="Helical"
FT /evidence="ECO:0000256|RuleBase:RU367081"
FT DOMAIN 243..330
FT /note="Steroid 5-alpha reductase C-terminal"
FT /evidence="ECO:0000259|PROSITE:PS50244"
SQ SEQUENCE 355 AA; 40194 MW; 3B72501DAA590460 CRC64;
MGNRGGSACT GRVAGEEGTL TTRKSEYTVA RSVTSWRLTS GVTGRSSYEG PWLEDGTLSQ
AVSVGASSLS LANRVRGWCV NSVLCELEER VQATDRPSEA EEVQLEAVEN RYFSHFYVVS
VLWNGFLLWC LTQSLFLGVP FPHWLHGLLR ILGAAQFQGG ELALSGFLVL VFLWLHSWRR
LFECLYVSVF SNTVIHVVQY CFGLAYYVLV GLTVLSQVPM DGRNVYVAGK NLLMQARWFH
ILGLVMFLWS SAHQYRSHAI LGGLRKNKAG VPVHCSHRIP FGDWFEYVSS PNYLAELMIY
VSIAVTFGLR NFTWWLVVAY VFFSHALAAL LSHRFYRSTF VSYPKHRRAF LPFLF
//
