Page last updated: 2024-10-15

scytonemin

Description

scytonemin: an ultraviolet sunscreen pigment from the sheaths of cyanobacteria; structure given in first source [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

scytonemin : A ring assembly obtained by 1,1'-coupling of two molecules of (3E)-3-[(4-hydroxyphenyl)methylidene]cyclopenta[b]indol-2(3H)-one. A UV-screening molecule produced by many strains of cyanobacteria. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Cross-References

ID SourceID
PubMed CID135473381
CHEMBL ID507146
CHEBI ID90127
SCHEMBL ID306255
MeSH IDM0221839

Synonyms (17)

Synonym
scytonemin
(1,1'-bicyclopent(b)indole)-2,2'(3h,3'h)-dione, 3,3'-bis((4hydroxyphenyl)methylene)-3,3'-bis((4-hydroxyphenyl)methylene)-(1,1'-bicyclopent(b)indole)-2,2'(3h,3'h)-dione
K00271
HMS3229P05
bdbm50263696
3-(4-hydroxybenzylidene)-1-(3-(4-hydroxybenzylidene)-2-oxo-2,3-dihydrocyclopenta[b]indol-1-yl)cyclopenta[b]indol-2(3h)-one
CHEMBL507146 ,
chebi:90127 ,
152075-98-4
(1,1'-bicyclopent(b)indole)-2,2'(3h,3'h)-dione, 3,3'-bis((4-hydroxyphenyl)methylene)-
vpq7yg2dmw ,
3,3'-bis((4-hydroxyphenyl)methylene)-(1,1'-bicyclopent(b)indole)-2,2'(3h,3'h)-dione
unii-vpq7yg2dmw
SCHEMBL306255
(3e,3'e)-3,3'-bis[(4-hydroxyphenyl)methylidene][1,1'-bicyclopenta[b]indole]-2,2'(3h,3'h)-dione
(3e,3'e)-3,3'-bis(4-hydroxybenzylidene)-[1,1'-bi(cyclopenta[b]indole)]-2,2'(3h,3'h)-dione.
(3e)-3-[(4-hydroxyphenyl)methylidene]-1-[(3e)-3-[(4-hydroxyphenyl)methylidene]-2-oxocyclopenta[b]indol-1-yl]cyclopenta[b]indol-2-one

Research Excerpts

Overview

Scytonemin is a small hydrophobic alkaloid pigment molecules present in the extracellular sheath of several cyanobacteria. It is a heterocyclic indole-alkaloid sunscreen, the synthesis of which is induced upon exposure to UVA (long-wavelength UV) radiation.

ExcerptReference
"Scytonemin is a promising UV-screen and antioxidant small molecule with commercial value in cosmetics and medicine. "( Biotechnological Production of the Sunscreen Pigment Scytonemin in Cyanobacteria: Progress and Strategy.
Gao, X; Jing, X; Lindblad, P; Liu, X, 2021
)
"Scytonemin is a dimeric indole-phenol sunscreen synthesized by some cyanobacteria under conditions of exposure to UVA radiation. "( The Widely Conserved
Dirks, B; Ferreira, D; Garcia-Pichel, F; Hamill, D; Klicki, K; Mitchell, N, 2018
)
"Scytonemin is an important UV-radiation protective biomolecule synthesised by extremophilic cyanobacteria in stressed terrestrial environments. "( Reduced and oxidised scytonemin: theoretical protocol for Raman spectroscopic identification of potential key biomolecules for astrobiology.
Edwards, HG; Varnali, T, 2014
)
"Scytonemin is a cyanobacterial sheath pigment with potent UV (UVA, UVB, and UVC) absorbing properties. "( Theoretical study of novel complexed structures for methoxy derivatives of scytonemin: potential biomarkers in iron-rich stressed environments.
Edwards, HG; Varnali, T, 2013
)
"Scytonemin is a small hydrophobic alkaloid pigment molecules present in the extracellular sheath of several cyanobacteria as a protective mechanism against short wavelength solar ultraviolet (UV) radiation."( Cyanobacterial Sunscreen Scytonemin: Role in Photoprotection and Biomedical Research.
Madamwar, D; Rastogi, RP; Sonani, RR, 2015
)
"Scytonemin is a heterocyclic indole-alkaloid sunscreen, the synthesis of which is induced upon exposure to UVA (long-wavelength UV) radiation."( Gene expression patterns associated with the biosynthesis of the sunscreen scytonemin in Nostoc punctiforme ATCC 29133 in response to UVA radiation.
Garcia-Pichel, F; Soule, T; Stout, V, 2009
)
"Scytonemin is a dimeric indole phenolic pigment found in the sheaths of many cyanobacteria. "( Probing the in vivo biosynthesis of scytonemin, a cyanobacterial ultraviolet radiation sunscreen, through small scale stable isotope incubation studies and MALDI-TOF mass spectrometry.
Dorrestein, PC; Esquenazi, E; Gerwick, WH; Jones, CS, 2011
)
"Scytonemin is a 544-Da hydrophobic pigment that can absorb UV-A radiation. "( The cyanobacterial UV-absorbing pigment scytonemin displays radical-scavenging activity.
Hirai, Y; Matsugo, S; Matsui, K; Nazifi, E; Sakamoto, T; Wada, N, 2012
)
"Scytonemin is an ultraviolet radiation (UVR)-screening compound synthesized by some sheathed cyanobacteria exposed to high solar and sky radiation. "( Effects of periodic desiccation on the synthesis of the UV-screening compound, scytonemin, in cyanobacteria.
Castenholz, RW; Fleming, ED, 2007
)
"Scytonemin is a stable UVR screening compound and appears to be synthesized by cyanobacteria as a long-term solution for reducing UVR exposure and damage, but mainly or solely, when metabolic activity is absent."( Effects of nitrogen source on the synthesis of the UV-screening compound, scytonemin, in the cyanobacterium Nostoc punctiforme PCC 73102.
Castenholz, RW; Fleming, ED, 2008
)

Actions

ExcerptReference
"Scytonemin was able to inhibit the proliferation of three myeloma cells in a dose-dependent manner, while U266 was the most sensitive one to scytonemin."( Scytonemin inhibits cell proliferation and arrests cell cycle through downregulating Plk1 activity in multiple myeloma cells.
Liu, Z; Zhang, G; Zhang, Z, 2013
)
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Roles (3)

RoleDescription
biological pigmentAn endogenous molecular entity that results in a colour of an organism as the consequence of the selective absorption of light.
bacterial metaboliteAny prokaryotic metabolite produced during a metabolic reaction in bacteria.
ultraviolet filterA photochemical role realized in the absorption of ultraviolet light, for example to protect skin cells from damage.
[role information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Drug Classes (5)

ClassDescription
organic heterotricyclic compoundAn organic tricyclic compound in which at least one of the rings of the tricyclic skeleton contains one or more heteroatoms.
polyphenolMembers of the class of phenols that contain 2 or more benzene rings each of which is substituted by at least one hydroxy group.
enoneAn alpha,beta-unsaturated ketone of general formula R(1)R(2)C=CR(3)-C(=O)R(4) (R(4) =/= H) in which the C=O function is conjugated to a C=C double bond at the alpha,beta position.
organonitrogen heterocyclic compoundAny organonitrogen compound containing a cyclic component with nitrogen and at least one other element as ring member atoms.
ring assemblyTwo or more cyclic systems (single rings or fused systems) which are directly joined to each other by double or single bonds are named ring assemblies when the number of such direct ring junctions is one less than the number of cyclic systems involved.
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Protein Targets (1)

Inhibition Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Serine/threonine-protein kinase PLK1Homo sapiens (human)IC50 (µMol)2.00000.00010.77349.0000AID387406
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Biological Processes (47)

Processvia Protein(s)Taxonomy
establishment of protein localizationSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic sister chromatid segregationSerine/threonine-protein kinase PLK1Homo sapiens (human)
G2/M transition of mitotic cell cycleSerine/threonine-protein kinase PLK1Homo sapiens (human)
negative regulation of transcription by RNA polymerase IISerine/threonine-protein kinase PLK1Homo sapiens (human)
establishment of mitotic spindle orientationSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic cell cycleSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic cytokinesisSerine/threonine-protein kinase PLK1Homo sapiens (human)
microtubule bundle formationSerine/threonine-protein kinase PLK1Homo sapiens (human)
double-strand break repairSerine/threonine-protein kinase PLK1Homo sapiens (human)
protein phosphorylationSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic spindle organizationSerine/threonine-protein kinase PLK1Homo sapiens (human)
sister chromatid cohesionSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic chromosome condensationSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic nuclear membrane disassemblySerine/threonine-protein kinase PLK1Homo sapiens (human)
metaphase/anaphase transition of mitotic cell cycleSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic spindle assembly checkpoint signalingSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic G2 DNA damage checkpoint signalingSerine/threonine-protein kinase PLK1Homo sapiens (human)
centrosome cycleSerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of mitotic cell cycleSerine/threonine-protein kinase PLK1Homo sapiens (human)
positive regulation of peptidyl-threonine phosphorylationSerine/threonine-protein kinase PLK1Homo sapiens (human)
female meiosis chromosome segregationSerine/threonine-protein kinase PLK1Homo sapiens (human)
protein ubiquitinationSerine/threonine-protein kinase PLK1Homo sapiens (human)
peptidyl-serine phosphorylationSerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of mitotic metaphase/anaphase transitionSerine/threonine-protein kinase PLK1Homo sapiens (human)
protein destabilizationSerine/threonine-protein kinase PLK1Homo sapiens (human)
positive regulation of proteasomal ubiquitin-dependent protein catabolic processSerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of cytokinesisSerine/threonine-protein kinase PLK1Homo sapiens (human)
negative regulation of apoptotic processSerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of protein bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
homologous chromosome segregationSerine/threonine-protein kinase PLK1Homo sapiens (human)
negative regulation of cyclin-dependent protein serine/threonine kinase activitySerine/threonine-protein kinase PLK1Homo sapiens (human)
positive regulation of proteolysisSerine/threonine-protein kinase PLK1Homo sapiens (human)
Golgi inheritanceSerine/threonine-protein kinase PLK1Homo sapiens (human)
nuclear membrane disassemblySerine/threonine-protein kinase PLK1Homo sapiens (human)
positive regulation of ubiquitin-protein transferase activitySerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of cell cycleSerine/threonine-protein kinase PLK1Homo sapiens (human)
synaptonemal complex disassemblySerine/threonine-protein kinase PLK1Homo sapiens (human)
protein localization to chromatinSerine/threonine-protein kinase PLK1Homo sapiens (human)
protein localization to nuclear envelopeSerine/threonine-protein kinase PLK1Homo sapiens (human)
double-strand break repair via alternative nonhomologous end joiningSerine/threonine-protein kinase PLK1Homo sapiens (human)
positive regulation of protein localization to nucleusSerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of mitotic spindle assemblySerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of mitotic cell cycle phase transitionSerine/threonine-protein kinase PLK1Homo sapiens (human)
positive regulation of ubiquitin protein ligase activitySerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of protein localization to cell cortexSerine/threonine-protein kinase PLK1Homo sapiens (human)
regulation of anaphase-promoting complex-dependent catabolic processSerine/threonine-protein kinase PLK1Homo sapiens (human)
negative regulation of double-strand break repair via homologous recombinationSerine/threonine-protein kinase PLK1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Molecular Functions (10)

Processvia Protein(s)Taxonomy
magnesium ion bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
protein kinase activitySerine/threonine-protein kinase PLK1Homo sapiens (human)
protein serine/threonine kinase activitySerine/threonine-protein kinase PLK1Homo sapiens (human)
protein bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
ATP bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
microtubule bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
anaphase-promoting complex bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
protein kinase bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
identical protein bindingSerine/threonine-protein kinase PLK1Homo sapiens (human)
protein serine kinase activitySerine/threonine-protein kinase PLK1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Ceullar Components (18)

Processvia Protein(s)Taxonomy
spindle microtubuleSerine/threonine-protein kinase PLK1Homo sapiens (human)
kinetochoreSerine/threonine-protein kinase PLK1Homo sapiens (human)
synaptonemal complexSerine/threonine-protein kinase PLK1Homo sapiens (human)
spindle poleSerine/threonine-protein kinase PLK1Homo sapiens (human)
nucleusSerine/threonine-protein kinase PLK1Homo sapiens (human)
nucleoplasmSerine/threonine-protein kinase PLK1Homo sapiens (human)
centrosomeSerine/threonine-protein kinase PLK1Homo sapiens (human)
centrioleSerine/threonine-protein kinase PLK1Homo sapiens (human)
spindleSerine/threonine-protein kinase PLK1Homo sapiens (human)
cytosolSerine/threonine-protein kinase PLK1Homo sapiens (human)
microtubule cytoskeletonSerine/threonine-protein kinase PLK1Homo sapiens (human)
midbodySerine/threonine-protein kinase PLK1Homo sapiens (human)
centriolar satelliteSerine/threonine-protein kinase PLK1Homo sapiens (human)
spindle midzoneSerine/threonine-protein kinase PLK1Homo sapiens (human)
mitotic spindle poleSerine/threonine-protein kinase PLK1Homo sapiens (human)
chromatinSerine/threonine-protein kinase PLK1Homo sapiens (human)
outer kinetochoreSerine/threonine-protein kinase PLK1Homo sapiens (human)
nucleusSerine/threonine-protein kinase PLK1Homo sapiens (human)
centrosomeSerine/threonine-protein kinase PLK1Homo sapiens (human)
cytoplasmSerine/threonine-protein kinase PLK1Homo sapiens (human)
spindle poleSerine/threonine-protein kinase PLK1Homo sapiens (human)
kinetochoreSerine/threonine-protein kinase PLK1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Bioassays (1)

Assay IDTitleYearJournalArticle
AID387406Inhibition of PLK12008Bioorganic & medicinal chemistry letters, Sep-15, Volume: 18, Issue:18
Pharmacophore modeling and virtual screening for designing potential PLK1 inhibitors.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (83)

TimeframeStudies, This Drug (%)All Drugs %
pre-19900 (0.00)18.7374
1990's4 (4.82)18.2507
2000's22 (26.51)29.6817
2010's49 (59.04)24.3611
2020's8 (9.64)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials0 (0.00%)5.53%
Reviews11 (12.79%)6.00%
Case Studies0 (0.00%)4.05%
Observational0 (0.00%)0.25%
Other75 (87.21%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]