The molecular structure of a high potential iron-sulfur protein (HiPIP) isolated from the purple photosynthetic bacterium, Ectothiorhodospira halophila strain BN9626, has been solved by x-ray diffraction analysis to a nominal resolution of 2.5 A and refined to a crystallographic R value of 18.4% including all measured x-ray data from 30.0- to 2.5-A resolution. Crystals used in the investigation...

The high-potential iron-sulfur protein (iso-form II) isolated from Ectothiorhodospira vacuolata has been crystallized and its three-dimensional structure determined by molecular replacement procedures and refined to 1.8-A resolution with a crystallographic R factor of 16.3%. Crystals employed in the investigation belonged to the space group C222(1) with unit cell dimensions of a = 58.4 A, b = 6...

Ekosistem lamun menjadi sumber kehidupan bagi biota laut yang berasosiasi didalamnya. Penelitian ini bertujuan untuk mengetahui kondisi ekosistem padang terdapat di Pulau Kelapa Dua, Taman Nasional Kepulauan Seribu. Stasiun pengamatan terbagi mejadi tiga stasiun, dan metode survey digunakan pengambilan data dengan menggunakan metoda line transek kuadran. Hasil penelitian ditemukan 4 jenis terse...

New distributional data on 33 species of the infraorder Leptopodomorpha (3 species of the family Leptopodidae and 30 species and subspecies of Saldidae) from the Palaearctic Region and Himalayas are provided. The following new or confirmed records are listed: Chartoscirta cocksii (Curtis, 1835) from Kosovo; Halosalda halophila (Jakovlev, 1876), Saldula amplicollis (Reuter, 1891) and Saldula xan...

Cellulase activity measured as filter paper digesting activity (FPase) and carboxymethyl cellulase (CMCase) was demonstrated in hindgut extracts of the cockroach Periplaneta americana. The highest activities measured amounted to 0.89 and 0.12 U . ml for CMCase and FPase, respectively. The cellulolytic capacity of the hindgut population increased dramatically when protozoa were present, and the ...

UNLABELLED BACKGROUND The salt tolerance of halophilic bacteria make them promising candidates for technical applications, like isolation of salt tolerant enzymes or remediation of contaminated saline soils and waters. Furthermore, some halophilic bacteria synthesize inorganic solids resulting in organic-inorganic hybrids. This process is known as biomineralization, which is induced and/or c...

Intracardiac echocardiography (ICE) is a useful tool for guiding transseptal puncture during electrophysiological mapping and ablation procedures. Left-sided accessory pathways (LSAP) can be ablated by using two different modalities: retrograde approach through the aortic valve and transseptal approach with puncture of the fossa ovalis. We shall report two cases of LSAP where transcatheter radi...

Cardiac myxoma represents 30-50% of all benign tumours, 25% of all tumours and cysts of heart, usually are solitary and develop in the atria, 75% originating from the left atrium and 1520% from the right atrium. These tumours arise from or near the interatrial septum at the border of the fossa ovalis membrane and occur in all age groups, most frequently between the third and sixth decade. Myxom...

Background: The salt tolerance of halophilic bacteria make them promising candidates for technical applications, like isolation of salt tolerant enzymes or remediation of contaminated saline soils and waters. Furthermore, some halophilic bacteria synthesize inorganic solids resulting in organic–inorganic hybrids. This process is known as biomineralization, which is induced and/or controlled by ...

We have recently identified p-coumaric acid as the chromophore of the photoactive yellow protein (PYP) from the purple sulfur bacterium Ectothiorhodospira halophila, a blue-light photoreceptor with rhodopsin-like photochemistry [Hoff, W. D., Düx, P., Hård, K., Nugteren-Roodzant, I. M., Crielaard, W., Boelens, R., Kaptein, R., Van Beeumen, J., & Hellingwerf, K. J. (1994) Biochemistry 33, 13959-1...