scholarly journals Skhodstvo i razlichiya lyuciferaz polihet Chaetopterus variopedatus v zavisimosti ot mesta ih obitaniya

2021 ◽  
Keyword(s):  
Chaetopterus Variopedatus

Morskie polihety Chaetopterus variopedatus (Renier) (semejstvo Chaetopteridae) — kosmopolity, predstavlyayushchie soboj vidovoj kompleks iz otdel'nyh populyacij-podvidov. Pri razdrazhenii chervi vypuskayut svetyashchiesya (460 nm) oblaka slizi, pri etom chasto yarko svetyatsya i ih parapodii. Na segodnyashnij den' po-prezhnemu ne yasno, kak imenno rabotaet biolyuminescentnaya sistema etih polihet. Ranee bylo vydvinuto predpolozhenie, chto lyuciferaza C. variopedatus mozhet byt' ispol'zovana dlya detekcii ferroptoza — nedavno otkrytogo puti programmiruemoj kletochnoj gibeli, vyzvannoj nakopleniem ionov dvuhvalentnogo zheleza. Cel'yu issledovaniya bylo vydelit' i oharakterizovat' lyuciferazy C. variopedatus, a takzhe sravnit' lyuciferazy C. variopedatus iz raznyh populyacij. Pri vydelenii otvetstvennogo za biolyuminescenciyu fermenta iz zamorozhennyh obrazcov brazil'skih C. variopedatus po usovershenstvovannoj metodike byli polucheny dve aktivnye lyuciferazy — L1 i L2. Predpolozhiv, chto odna iz ukazannyh lyuciferaz opredelyaet svechenie slizi, a drugaya — svechenie parapodij chervej, etu zhe metodiku primenili k razdel'nym obrazcam slizi i parapodij zhivyh dal'nevostochnyh C. variopedatus. Odnako ih sliz' okazalas' nesvetyashchejsya. Pokazano, chto funkciyu svecheniya parapodij polihet C. variopedatus obespechivaet lyuciferaza L2, tak kak ona obnaruzhena v obshchej biomasse brazil'skih polihet i v parapodiyah dal'nevostochnyh polihet. Svechenie slizi brazil'skih C. variopedatus obuslovleno funkcionirovaniem lyuciferazy L1, kotoraya otsutstvuet v slizi dal'nevostochnogo podvida. Nabor izoform lyuciferaz polihet C. variopedatus zavisit ot mesta ih obitaniya.

Anion-mediated lysine-arginine interaction evidence in Chaetopterus variopedatus sperm protamine

FEBS Letters ◽  
1993 ◽  
Vol 334 (1) ◽  
pp. 125-127 ◽  
Author(s):  
Marina Piscopo ◽  
Licia Tomei ◽  
Luciano De Petrocellis ◽  
Giuseppe Geraci
Keyword(s):  
Chaetopterus Variopedatus

scholarly journals Chaetopterus variopedatus Bioluminescence: A Review of Light Emission within a Species Complex

2020 ◽  
Vol 96 (4) ◽  
pp. 768-778
Author(s):  
Jeremy D. Mirza ◽  
Álvaro E. Migotto ◽  
Ilia V. Yampolsky ◽  
Gabriela V. de Moraes ◽  
Aleksandra S. Tsarkova ◽  
...  
Keyword(s):  
Species Complex ◽  
Light Emission ◽  
Chaetopterus Variopedatus

Studies on Chaetopterus variopedatus (Renier). I. The light-producing glands

1952 ◽  
Vol 30 (3) ◽  
pp. 417-433 ◽  
Author(s):  
J. A. Colin Nicol
Keyword(s):  
Sea Water ◽  
Chaetopterus Variopedatus ◽  
Glandular Cells ◽  
Epidermal Glands

Chaetopterus variopedatus (Renier) is a tube-dwelling worm that has note worthy luminescent powers. Production of light is by an extracellular process resulting from the discharge of a luminescent slime into the sea water. Because of its luminescent ability, the epidermal glands of Chaetopterus have been repeatedly described in detail, but it is still not clear what elements produce the luminescent secretion. I have, therefore, re-examined the histology of the light-producing regions of Chaetopterus with a view to determining the character of the photocytes or light-producing glandular cells.

scholarly journals Characterization of a new variant DNA (cytosine-5)-methyltransferase unable to methylate double stranded DNA isolated from the marine annelid worm Chaetopterus variopedatus

FEBS Letters ◽  
1999 ◽  
Vol 460 (2) ◽  
pp. 380-384 ◽  
Author(s):  
Rosanna del Gaudio ◽  
Rossella Di Giaimo ◽  
Nicoletta Potenza ◽  
Margherita Branno ◽  
Francesco Aniello ◽  
...  
Keyword(s):  
Double Stranded Dna ◽  
Chaetopterus Variopedatus ◽  
New Variant ◽  
Annelid Worm

The Control of the Beat of the Fan Segments in Chætopterus variopedatus

Nature ◽  
1927 ◽  
Vol 119 (2998) ◽  
pp. 564-565 ◽  
Author(s):  
N. J. BERRILL
Keyword(s):  
Chaetopterus Variopedatus

Self-association of Chaetopterus variopedatus sperm histone H1-like. Relevance of arginine content and possible physiological role.

2008 ◽  
Vol 55 (4) ◽  
pp. 701-706 ◽  
Author(s):  
Daniela Salvati ◽  
Salvatore Conforti ◽  
Mariachiara Conte ◽  
Danilo Swann Matassa ◽  
Laura Fucci ◽  
...  
Keyword(s):  
Physiological Role ◽  
Histone H1 ◽  
Native Page ◽  
High Tendency ◽  
Phosphate Ions ◽  
R Ratio ◽  
Chaetopterus Variopedatus ◽  
Calf Thymus ◽  
Similar Content ◽  
Self Association

Self-association of histones H1 from calf thymus and from sperm of the marine worm Chaetopterus variopedatus was studied on native and glutaraldehyde cross-linked molecules by PAGE and by salt-induced turbidity measurements. Multiple polymers were generated by native sperm histone H1-like after glutaraldehyde cross-linking while the same treatment on its lysine- or arginine-modified derivatives and on somatic histone H1 failed to induce polymerization. This result suggests the relevance of arginine content in the formation of histone H1-like polymers particularly because Chaetopterus variopedatus and calf thymus histones H1 have similar content of lysine but different K/R ratio (2 and 15, respectively). Salt-induced turbidity experiments confirmed the high tendency of sperm histone H1-like to form oligomers, particularly in the presence of phosphate ions. Native PAGE analysis in the presence of phosphate supported this hypothesis. The reported results suggest that phosphate ions connecting lysine and arginine side chain groups contribute to the interaction of sperm histone H1-like with DNA in chromatin and play a key role in organization and stabilization of the chromatin higher order structures.

Isolation and characterization of a new β-galactose-specific lectin from the sea worm Chaetopterus variopedatus

1995 ◽  
Vol 275 (1) ◽  
pp. 193-200 ◽  
Author(s):  
Lidiya V. Mikheyskaya ◽  
Evgeny V. Evtushenko ◽  
Raisa G. Ovodova ◽  
Nataliya I. Belogortseva ◽  
Yury S. Ovodov
Keyword(s):  
Isolation And Characterization ◽  
Chaetopterus Variopedatus

Pigments of Chaetopterus variopedatus (polychaeta)

1959 ◽  
Vol 150 (941) ◽  
pp. 509-538 ◽  
Keyword(s):  
Body Wall ◽  
Histological Study ◽  
The Body ◽  
Bile Pigment ◽  
Green Pigment ◽  
Chaetopterus Variopedatus ◽  
Pigment Type ◽  
Constant Feature ◽  
Chlorophyll Derivatives

A chemical and histological study has been made of the pigments of the polychaete worm Chaetopterus variopedatus . The conspicuous green colour of the gut in the middle and posterior regions is due to a green pigment hitherto known as ‘chaetopterin’, which is localized in small green spherules in the gut epithelial cells. ‘Chaetopterin’ is a mixture of phaeophorbides a and b , the former predominating. Other pigments found in the gut-wall of the middle region of the worm include the chlorophyll derivatives iso -phaeophorbide d , dioxymesophyllochlorin, copper phaeophorbide chelation compounds, and possibly rhodoporphyrin g 7 carboxylic acid; coproporphyrin III; bile pigment-type compounds turbo-glaucobilin and helioporobilin, and the carotenoids β -carotene and traces of a xanthophyll. The body wall contains β -carotene. A black melanin is present in the black chaetae of setigerous segment IV, and a reddish melanoid pigment in a red stripe at the anterior margin of the head. Pigments present in the faeces include phaeophorbides and β -carotene. The phaeophorbides a and b are derived from chlorophylls a and b in the animal’s food (detritus). The green spherules in vivo are not fluorescent, suggesting that fluorescent, suggesting that the pigment is adsorbed on to some large molecule, possibly a mucopolysaccharide. No evidence was found that the green spherules are symbionts. Since they are such a constant feature of the animals, even during prolonged starvation, they would appear to play some essential biochemical role.

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