ID:DHB2_HUMAN DESCRIPTION: RecName: Full=Estradiol 17-beta-dehydrogenase 2; EC=1.1.1.62; AltName: Full=17-beta-hydroxysteroid dehydrogenase type 2; Short=17-beta-HSD 2; AltName: Full=20 alpha-hydroxysteroid dehydrogenase; Short=20-alpha-HSD; AltName: Full=E2DH; AltName: Full=Microsomal 17-beta-hydroxysteroid dehydrogenase; AltName: Full=Testosterone 17-beta-dehydrogenase; EC=1.1.1.63; FUNCTION: Capable of catalyzing the interconversion of testosterone and androstenedione, as well as estradiol and estrone. Also has 20-alpha-HSD activity. Uses NADH while EDH17B3 uses NADPH. CATALYTIC ACTIVITY: Estradiol-17-beta + NAD(P)(+) = estrone + NAD(P)H. CATALYTIC ACTIVITY: Testosterone + NAD(+) = androst-4-ene-3,17- dione + NADH. BIOPHYSICOCHEMICAL PROPERTIES: Kinetic parameters: KM=0.21 uM for estradiol; KM=0.39 uM for testosterone; KM=0.31 uM for dihydrotestosterone; KM=0.71 uM for 20-alpha-dihydroprogesterone; KM=0.78 uM for estrone; KM=2.63 uM for androstenedione; Vmax=38 nmol/min/mg enzyme with estradiol as substrate; Vmax=45 nmol/min/mg enzyme with testosterone as substrate; Vmax=38 nmol/min/mg enzyme with dihydrotestosterone as substrate; Vmax=5.6 nmol/min/mg enzyme with 20-alpha-dihydroprogesterone as substrate; Vmax=6.6 nmol/min/mg enzyme with estrone as substrate; Vmax=11.5 nmol/min/mg enzyme with androstenedione as substrate; SUBCELLULAR LOCATION: Membrane; Single-pass type II membrane protein (Potential). SIMILARITY: Belongs to the short-chain dehydrogenases/reductases (SDR) family. WEB RESOURCE: Name=NIEHS-SNPs; URL="http://egp.gs.washington.edu/data/hsd17b2/";
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
ModBase Predicted Comparative 3D Structure on P37059
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.
Biological Process: GO:0001701 in utero embryonic development GO:0001890 placenta development GO:0006629 lipid metabolic process GO:0006694 steroid biosynthetic process GO:0006703 estrogen biosynthetic process GO:0032526 response to retinoic acid GO:0055114 oxidation-reduction process
Cellular Component: GO:0005789 endoplasmic reticulum membrane GO:0016020 membrane GO:0016021 integral component of membrane
Descriptions from all associated GenBank mRNAs
AK223001 - Homo sapiens mRNA for hydroxysteroid (17-beta) dehydrogenase 2 variant, clone: HSI06833. AK313109 - Homo sapiens cDNA, FLJ93594, Homo sapiens hydroxysteroid (17-beta) dehydrogenase 2 (HSD17B2),mRNA. JD465687 - Sequence 446711 from Patent EP1572962. JD424585 - Sequence 405609 from Patent EP1572962. JD273821 - Sequence 254845 from Patent EP1572962. BC009581 - Homo sapiens hydroxysteroid (17-beta) dehydrogenase 2, mRNA (cDNA clone MGC:14627 IMAGE:4077164), complete cds. BC059170 - Homo sapiens hydroxysteroid (17-beta) dehydrogenase 2, mRNA (cDNA clone MGC:14632 IMAGE:4079440), complete cds. JD102523 - Sequence 83547 from Patent EP1572962. L11708 - Human 17 beta hydroxysteroid dehydrogenase type 2 mRNA, complete cds. JD061979 - Sequence 43003 from Patent EP1572962. JD117372 - Sequence 98396 from Patent EP1572962. JD293625 - Sequence 274649 from Patent EP1572962. JD247627 - Sequence 228651 from Patent EP1572962. JD392499 - Sequence 373523 from Patent EP1572962. JD530523 - Sequence 511547 from Patent EP1572962. JD229530 - Sequence 210554 from Patent EP1572962. DQ896372 - Synthetic construct Homo sapiens clone IMAGE:100010832; FLH193738.01L; RZPDo839B0769D hydroxysteroid (17-beta) dehydrogenase 2 (HSD17B2) gene, encodes complete protein. KJ891398 - Synthetic construct Homo sapiens clone ccsbBroadEn_00792 HSD17B2 gene, encodes complete protein. KR710358 - Synthetic construct Homo sapiens clone CCSBHm_00011814 HSD17B2 (HSD17B2) mRNA, encodes complete protein. DQ893100 - Synthetic construct clone IMAGE:100005730; FLH193742.01X; RZPDo839B0779D hydroxysteroid (17-beta) dehydrogenase 2 (HSD17B2) gene, encodes complete protein. BX648557 - Homo sapiens mRNA; cDNA DKFZp779N2235 (from clone DKFZp779N2235). JD434581 - Sequence 415605 from Patent EP1572962.
Biochemical and Signaling Pathways
Reactome (by CSHL, EBI, and GO)
Protein P37059 (Reactome details) participates in the following event(s):