UniProtKB - Q29527 (C11B1_PAPHU)
Cytochrome P450 11B1, mitochondrial
CYP11B1
Functioni
A cytochrome P450 monooxygenase involved in the biosynthesis of adrenal corticoids. Catalyzes the hydroxylation of carbon hydrogen bond at 11-beta position of 11-deoxycortisol and 11-deoxycorticosterone/21-hydroxyprogesterone yielding cortisol or corticosterone, respectively. Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate and reducing the second into a water molecule. Two electrons are provided by NADPH via a two-protein mitochondrial transfer system comprising flavoprotein FDXR (adrenodoxin/ferredoxin reductase) and nonheme iron-sulfur protein FDX1 or FDX2 (adrenodoxin/ferredoxin).
By similarityCatalytic activityi
- a steroid + 2 H+ + O2 + 2 reduced [adrenodoxin] = an 11β-hydroxysteroid + H2O + 2 oxidized [adrenodoxin]By similarityEC:1.14.15.4By similarityThis reaction proceeds in the forwardBy similarity direction.
- 11-deoxycortisol + 2 H+ + O2 + 2 reduced [adrenodoxin] = cortisol + H2O + 2 oxidized [adrenodoxin]By similarityThis reaction proceeds in the forwardBy similarity direction.
- 21-hydroxyprogesterone + 2 H+ + O2 + 2 reduced [adrenodoxin] = corticosterone + H2O + 2 oxidized [adrenodoxin]By similarityThis reaction proceeds in the forwardBy similarity direction.
Cofactori
: glucocorticoid biosynthesis Pathwayi
This protein is involved in the pathway glucocorticoid biosynthesis, which is part of Steroid biosynthesis.By similarityView all proteins of this organism that are known to be involved in the pathway glucocorticoid biosynthesis and in Steroid biosynthesis.
Pathwayi: Steroid hormone biosynthesis
This protein is involved in Steroid hormone biosynthesis.By similarityView all proteins of this organism that are known to be involved in Steroid hormone biosynthesis.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 450 | Iron (heme axial ligand)By similarity | 1 |
GO - Molecular functioni
- heme binding Source: InterPro
- iron ion binding Source: InterPro
- steroid 11-beta-monooxygenase activity Source: UniProtKB-EC
GO - Biological processi
- glucocorticoid biosynthetic process Source: UniProtKB-UniPathway
Keywordsi
Molecular function | Monooxygenase, Oxidoreductase |
Biological process | Steroidogenesis |
Ligand | Heme, Iron, Metal-binding |
Enzyme and pathway databases
UniPathwayi | UPA00788 |
Names & Taxonomyi
Protein namesi | Recommended name: Cytochrome P450 11B1, mitochondrialAlternative name(s): CYPXIB1 Cytochrome P450C11 Steroid 11-beta-hydroxylase, CYP11B1By similarity (EC:1.14.15.4By similarity) |
Gene namesi | Name:CYP11B1 |
Organismi | Papio hamadryas ursinus (Chacma baboon) |
Taxonomic identifieri | 36229 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Cercopithecidae › Cercopithecinae › Papio |
Subcellular locationi
Mitochondrion
- Mitochondrion inner membrane By similarity; Peripheral membrane protein By similarity
Mitochondrion
- mitochondrial inner membrane Source: UniProtKB-SubCell
Keywords - Cellular componenti
Membrane, Mitochondrion, Mitochondrion inner membranePTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Transit peptidei | 1 – 24 | MitochondrionBy similarityAdd BLAST | 24 | |
ChainiPRO_0000003601 | 25 – 503 | Cytochrome P450 11B1, mitochondrialAdd BLAST | 479 |
Family & Domainsi
Sequence similaritiesi
Keywords - Domaini
Transit peptideFamily and domain databases
Gene3Di | 1.10.630.10, 1 hit |
InterProi | View protein in InterPro IPR001128, Cyt_P450 IPR017972, Cyt_P450_CS IPR002399, Cyt_P450_mitochondrial IPR036396, Cyt_P450_sf |
Pfami | View protein in Pfam PF00067, p450, 1 hit |
PRINTSi | PR00408, MITP450 PR00385, P450 |
SUPFAMi | SSF48264, SSF48264, 1 hit |
PROSITEi | View protein in PROSITE PS00086, CYTOCHROME_P450, 1 hit |
i Sequence
Sequence statusi: Complete.
: The displayed sequence is further processed into a mature form. Sequence processingi
10 20 30 40 50
MALRAKAEVC MAAPWLSLQR ARALGTRATR VPRTVLPFEA MPRRPGNRWL
60 70 80 90 100
RLLQIWREQG YEHLHLEVHQ TFQELGPIFR YDLGGAGMVC VMLPEDVEKL
110 120 130 140 150
QQVDSLNPRR MSLEPWVAYR QHRGHKCGVF LLNGPEWRFN RLRLNPDVLS
160 170 180 190 200
PKAVQRFLPM VDAVARDFSQ ALRKKVVQNA RESVTLDIQP SIFHYTIEAS
210 220 230 240 250
NLALFGERLG LVGHSPSSAS LSFLHALEVM FKSTVQLMFM PRSLSRWTSP
260 270 280 290 300
KVWKEHFEAW DCIFQYGDNC IQKIYQELAL SRPQQYTSIV AELLLNAELS
310 320 330 340 350
PDAIKANSME LTAGSVDTTV FPLLMTLFEL ARNPNVQQAL RQESLAAAAS
360 370 380 390 400
ISEHPQKATT ELPLLRAALK ETLRLYPVGL FLERVVSSDL VLQNYHIPAG
410 420 430 440 450
TLVRVFLYSL GRNPALFPRP ERYNPQRWLD IRGSGRNFYH VPFGFGMRQC
460 470 480 490 500
LGRRLAEAEM LLLLHHVLKH LQVETLTQED IKMVYSFILR PSTFPLLTFR
AIN
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U52085 , U52081, U52082, U52083, U52084 Genomic DNA Translation: AAA96967.1 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U52085 , U52081, U52082, U52083, U52084 Genomic DNA Translation: AAA96967.1 |
3D structure databases
AlphaFoldDBi | Q29527 |
SMRi | Q29527 |
ModBasei | Search... |
Enzyme and pathway databases
UniPathwayi | UPA00788 |
Family and domain databases
Gene3Di | 1.10.630.10, 1 hit |
InterProi | View protein in InterPro IPR001128, Cyt_P450 IPR017972, Cyt_P450_CS IPR002399, Cyt_P450_mitochondrial IPR036396, Cyt_P450_sf |
Pfami | View protein in Pfam PF00067, p450, 1 hit |
PRINTSi | PR00408, MITP450 PR00385, P450 |
SUPFAMi | SSF48264, SSF48264, 1 hit |
PROSITEi | View protein in PROSITE PS00086, CYTOCHROME_P450, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | C11B1_PAPHU | |
Accessioni | Q29527Primary (citable) accession number: Q29527 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | November 1, 1997 |
Last sequence update: | November 1, 1997 | |
Last modified: | May 25, 2022 | |
This is version 82 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Documents
- PATHWAY comments
Index of metabolic and biosynthesis pathways - SIMILARITY comments
Index of protein domains and families