scholarly journals Preparation and characterization of histone H1 from the sperm of the sea-urchin Sphaerechinus granularis

1981 ◽  
Vol 195 (1) ◽  
pp. 171-176 ◽  
Author(s):  
V Giancotti ◽  
S Cosimi ◽  
P D Cary ◽  
C Crane-Robinson ◽  
G Geraci
Keyword(s):  
Secondary Structure ◽  
Sea Urchin ◽  
Fluorescence Spectra ◽  
Tertiary Structure ◽  
Histone H1 ◽  
Separation And Purification ◽  
Tertiary Structures ◽  
Calf Thymus ◽  
Sea Urchin Sperm

The separation and purification of histone H1 from the sperm of the sea-urchin Sphaerechinus granularis is described. Physical studies were used to compare this histone H1 molecule with H1 histones from other species. C.d. and 270 MHz n.m.r. spectroscopy indicate that, despite significant compositional differences from other sea-urchin sperm H1 histones, their secondary and tertiary structures are very similar. A large difference in helicity was, however, found between S. granularis histone H1 and calf thymus histone H1, and their n.m.r. and fluorescence spectra also differ considerably. It is concluded that secondary structure and tertiary structure have not been conserved in the evolution of the H1 histone family.

scholarly journals Secondary and tertiary structural differences between histone H1 molecules from calf thymus and sea-urchin (Sphaerechinus granularis) sperm

1981 ◽  
Vol 197 (3) ◽  
pp. 655-660 ◽  
Author(s):  
V Giancotti ◽  
E Russo ◽  
S Cosimi ◽  
P D Cary ◽  
C Crane-Robinson
Keyword(s):  
Structural Feature ◽  
Sea Urchin ◽  
Tertiary Structure ◽  
Histone H1 ◽  
Tryptic Digestion ◽  
Chicken Erythrocyte ◽  
Calf Thymus ◽  
Helical Content ◽  
Structural Differences ◽  
Relationship Of

Tryptic digestion of histone H1 from the sperm of the sea urchin Sphaerechinus granularis leaves a limiting peptide of approx. 80 residues that is of similar size to the limit peptide from calf thymus H1 or chicken erythrocyte H5. The S. granularis limit peptide folds to form tertiary structure similar to that of the intact parent histone H1 (shown by n.m.r. spectra), but the helical content is decreased by the digestion from 64 residues to 28. In contrast, intact calf thymus H1 and chicken erythrocyte H5 histones have only about 28 helical residues, which are preserved in their limit peptides. The extra helix in S. granularis is shown to be rapidly digested away by trypsin, and its location in histone H1 is discussed. A possible relationship of this structural feature to the length of linker DNA is proposed.

Torus Circumference and Thickness Parameters From a Linear DNA Size Series Suggest How Toruses Self-Assemble

1985 ◽  
Vol 43 ◽  
pp. 522-523
Author(s):  
George C. Ruben ◽  
Kenneth A. Marx
Keyword(s):  
Tertiary Structure ◽  
Dna Complexes ◽  
Tertiary Structures ◽  
Self Assembling ◽  
Double Stranded Dna ◽  
Calf Thymus ◽  
Dna Organization ◽  
Condensed Dna ◽  
Dna Size

Certain double stranded DNA bacteriophage and viruses are thought to have their DNA organized into large torus shaped structures. Morphologically, these poorly understood biological DNA tertiary structures resemble spermidine-condensed DNA complexes formed in vitro in the total absence of other macromolecules normally synthesized by the pathogens for the purpose of their own DNA packaging. Therefore, we have studied the tertiary structure of these self-assembling torus shaped spermidine- DNA complexes in a series of reports. Using freeze-etch, low Pt-C metal (10-15Å) replicas, we have visualized the microscopic DNA organization of both calf Thymus( CT) and linear 0X-174 RFII DNA toruses. In these structures DNA is circumferentially wound, continuously, around the torus into a semi-crystalline, hexagonal packed array of parallel DNA helix sections.

Isolation and Characterization of Low Density Detergent-Insoluble Membrane (LD-DIM) Fraction from Sea Urchin Sperm

1999 ◽  
Vol 258 (3) ◽  
pp. 616-623 ◽  
Author(s):  
Kaoru Ohta ◽  
Chihiro Sato ◽  
Tsukasa Matsuda ◽  
Masaru Toriyama ◽  
William J. Lennarz ◽  
...  
Keyword(s):  
Sea Urchin ◽  
Low Density ◽  
Isolation And Characterization ◽  
Sea Urchin Sperm

C/A dynein isolated from sea urchin sperm flagellar axonemes. Enzymatic properties and interaction with microtubules

1994 ◽  
Vol 107 (2) ◽  
pp. 353-361 ◽  
Author(s):  
E. Yokota ◽  
I. Mabuchi
Keyword(s):  
Atpase Activity ◽  
Sea Urchin ◽  
Maximal Inhibition ◽  
Heavy Chains ◽  
Lower Molecular Mass ◽  
Cross Bridges ◽  
Polypeptide Chains ◽  
Brain Tubulin ◽  
Sea Urchin Sperm

C/A dynein is a novel dynein isolated from sea urchin sperm flagellar axonemes. It is composed of C and A heavy chains and some additional lower molecular mass polypeptide chains. The characterization of ATPase activity and the interaction of this dynein with microtubules polymerized from calf brain tubulin were investigated in this study. The ATPase activity of C/A dynein (0.3-0.4 mumol Pi/min per mg) was about one half that of outer arm 21 S dynein (0.6-0.8 mumol Pi/min per mg) at 25 degrees C. Vanadate inhibited the ATPase activity with a half-maximal inhibition at 1 microM. C/A dynein absorbed to the glass surface was able to translocate the microtubules towards its plus end. The velocity of the microtubule movement in the presence of 1 mM ATP was 4.0 to 4.5 microns/s at 22 degrees C. C/A dynein binds to and bundles the microtubules even in the presence of ATP. Cross-bridges were found between adjacent microtubules in the bundle with an axial periodicity of about 24 nm. The ATPase activity of C/A dynein was enhanced up to several-fold by the microtubules at concentration as low as 1 mg/ml. On the other hand, 21 S dynein bound to the microtubules with 24 nm axial periodicity only in the absence of ATP. Its ATPase activity was not activated by the microtubules. From these results, it is concluded that the manner of interaction with microtubules of C/A dynein is different from that of the outer arm dynein.

scholarly journals Precise elimination of the N-terminal domain of histone H1

1982 ◽  
Vol 203 (3) ◽  
pp. 577-582 ◽  
Author(s):  
L Böhm ◽  
P Sautière ◽  
P D Cary ◽  
C Crane-Robinson
Keyword(s):  
Tertiary Structure ◽  
Submaxillary Gland ◽  
Spectroscopic Characterization ◽  
Histone H1 ◽  
Globular Domain ◽  
Edman Degradation ◽  
Terminal Domain ◽  
C Terminus ◽  
Mouse Submaxillary Gland ◽  
Calf Thymus

The proteinase from mouse submaxillary gland was used to cleave total calf thymus histone H1 between residues 32 and 33. The C-terminal peptide, comprising residues 33 to the C-terminus, was purified and identified by amino acids analysis and Edman degradation. Spectroscopic characterization by n.m.r. for tertiary structure and by c.d. for secondary structure shows the globular domain of the parent histone H1 to be preserved intact in the peptide. It has therefore lost only the N-terminal domain and is a fragment of histone H1 comprising the globular plus C-terminal domains only. Precise elimination of only the N-terminal domain makes the fragment suitable for testing domain function in histone H1.

scholarly journals Characterization of a Gene Family Encoding SEA (Sea-urchin Sperm Protein, Enterokinase and Agrin)-Domain Proteins with Lectin-Like and Heme-Binding Properties from Schistosoma japonicum

2014 ◽  
Vol 8 (1) ◽  
pp. e2644
Author(s):  
Evaristus Chibunna Mbanefo ◽  
Mihoko Kikuchi ◽  
Nguyen Tien Huy ◽  
Mohammed Nasir Shuaibu ◽  
Mahamoud Sama Cherif ◽  
...  
Keyword(s):  
Gene Family ◽  
Schistosoma Japonicum ◽  
Sea Urchin ◽  
Heme Binding ◽  
Binding Properties ◽  
Sperm Protein ◽  
Sea Urchin Sperm
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