SRD5A1
steroid 5 alpha-reductase 1

Steroid 5-alpha-reductase (EC 1.3.99.5) catalyzes the conversion of testosterone into the more potent androgen, dihydrotestosterone (DHT). Also see SRD5A2 (MIM 607306).[supplied by OMIM, Mar 2008]

Member of: DE-6
Biological processes 58 terms
3-oxo-5-alpha-steroid 4-dehydrogenase (NADP+) activity (GO:0047751)3-oxo-5-alpha-steroid 4-dehydrogenase activity (GO:0003865)3-oxo-5-alpha-steroid 4-dehydrogenase activity (GO:0003865)3-oxo-5-alpha-steroid 4-dehydrogenase activity (GO:0003865)3-oxo-5-alpha-steroid 4-dehydrogenase activity (GO:0003865)NADPH binding (GO:0070402)androgen biosynthetic process (GO:0006702)androgen biosynthetic process (GO:0006702)androgen biosynthetic process (GO:0006702)androgen catabolic process (GO:0006710)androgen metabolic process (GO:0008209)bone development (GO:0060348)cell body fiber (GO:0070852)cellular response to cAMP (GO:0071320)cellular response to dexamethasone stimulus (GO:0071549)cellular response to epinephrine stimulus (GO:0071872)cellular response to estradiol stimulus (GO:0071392)cellular response to growth factor stimulus (GO:0071363)cellular response to insulin stimulus (GO:0032869)cellular response to serotonin (GO:1904015)cellular response to starvation (GO:0009267)cellular response to testosterone stimulus (GO:0071394)cerebral cortex development (GO:0021987)diterpenoid metabolic process (GO:0016101)electron transfer activity (GO:0009055)endoplasmic reticulum membrane (GO:0005789)endoplasmic reticulum membrane (GO:0005789)female genitalia development (GO:0030540)hippocampus development (GO:0021766)hypothalamus development (GO:0021854)lipid metabolic process (GO:0006629)liver development (GO:0001889)male genitalia development (GO:0030539)male gonad development (GO:0008584)male gonad development (GO:0008584)membrane (GO:0016020)neuronal cell body (GO:0043025)neuronal cell body (GO:0043025)oxidoreductase activity, acting on the CH-CH group of donors (GO:0016627)perinuclear region of cytoplasm (GO:0048471)pituitary gland development (GO:0021983)progesterone metabolic process (GO:0042448)protein binding (GO:0005515)response to estradiol (GO:0032355)response to estrogen (GO:0043627)response to follicle-stimulating hormone (GO:0032354)response to fungicide (GO:0060992)response to growth hormone (GO:0060416)response to muscle activity (GO:0014850)response to resveratrol (GO:1904638)response to testosterone (GO:0033574)response to xenobiotic stimulus (GO:0009410)sex determination (GO:0007530)spinal cord development (GO:0021510)steroid biosynthetic process (GO:0006694)steroid metabolic process (GO:0008202)thalamus development (GO:0021794)urogenital system development (GO:0001655)
Expression (TPM)
SRD5A1 — as a Regulated Gene

TFs regulating SRD5A1 0 TFs

Transcription factors with Perturb-seq knockdown data for SRD5A1. The Binding column indicates whether any binding evidence exists for this TF–gene pair (ChIP-seq or motif footprint peaks). The Mean coef is the average Perturb-seq regression coefficient across active gRNAs (positive = SRD5A1 upregulated upon KD; negative = downregulated). The Outlier column indicates whether this gene is in the top or bottom 5% of all TF knockdown effects.

Data: Effect:
TF Mean coef Binding Outlier TF→Gene link

Elements linked to SRD5A1

Open chromatin peaks (ATAC-seq) in the genomic neighbourhood of SRD5A1, linked by TSS proximity or chromatin conformation (Multiome / HiCAR). Each element overlaps at least one TF ChIP-seq binding site — the TFs column shows how many distinct TFs bind that element.

Accessibility Element Dist. to TSS Link type TFs
chr5:6,377,871–6,379,073 254.8 kb Distal (>10kb) Multiome 776
chr5:6,475,554–6,476,306 157.5 kb Distal (>10kb) Multiome 93
chr5:6,582,577–6,583,754 50.2 kb Distal (>10kb) Multiome 244
chr5:6,595,290–6,596,038 37.8 kb Distal (>10kb) Multiome 157
chr5:6,632,465–6,634,316 144 bp At TSS Multiome 837
chr5:6,637,424–6,638,209 4.0 kb Proximal (<10kb) 16
chr5:6,686,711–6,687,368 53.7 kb Distal (>10kb) Multiome 390
chr5:6,712,052–6,714,014 79.8 kb Distal (>10kb) Multiome HiCAR 953
chr5:6,765,540–6,766,155 132.4 kb Distal (>10kb) Multiome 329
chr5:6,818,419–6,819,319 185.3 kb Distal (>10kb) Multiome 115
chr5:7,849,610–7,851,526 1217.2 kb Distal (>10kb) Multiome HiCAR 471

Genome Browser

Genomic view of the SRD5A1 locus showing ATAC-seq accessibility and RNA-seq expression across the ESC → DE time course, together with TF binding peaks and element-to-TSS loop connections.

chr5:6,367,871 – 7,861,526
Proximal 1 kb Distal 10 kb Multiome HiCAR ATAC-seq RNA-seq