نتایج جستجو برای: chromomycin a3

تعداد نتایج: 7508  

Journal: :Nucleic acids research 1998
R Katahira M Katahira Y Yamashita H Ogawa Y Kyogoku M Yoshida

Aureolic acid group compounds, such as chromomycin A3(CHM) and mithramycin (MIT), are known as antitumor drugs. Recently we isolated a novel aureolic acid group antitumor drug, UCH9, from Streptomyces sp. The chemical structure of UCH9 is unique in that mono- (A ring) and tetrasaccharide (B-E rings) segments and a longer hydrophobic sidechain are attached to the chromophore, while di- and trisa...

2017
Parvin Sabeti Fardin Amidi Seyed Mahdi Kalantar Mohammad Ali Sedighi Gilani Soheila Pourmasumi Atefeh Najafi Ali Reza Talebi

BACKGROUND Teratoasthenozoospermia (TA) is a severe form of male infertility with no clear etiology. OBJECTIVE To compare the level of intracellular anion superoxide (O2-), heat shock protein A2 (HSPA2) and protamine deficiencies in ejaculated spermatozoa between teratoasthenozoospermic and normozoospermic men. MATERIALS AND METHODS In this case- control study, semen samples of 20 infertile...

2015
Neta Manela Moran Oliva Rinat Ovadia Noga Sikron-Persi Biruk Ayenew Aaron Fait Gad Galili Avichai Perl David Weiss Michal Oren-Shamir

Environmental stresses such as high light intensity and temperature cause induction of the shikimate pathway, aromatic amino acids (AAA) pathways, and of pathways downstream from AAAs. The induction leads to production of specialized metabolites that protect the cells from oxidative damage. The regulation of the diverse AAA derived pathways is still not well understood. To gain insight on that ...

Journal: :Journal of bacteriology 1988
J M Ray C Yanofsky R Bauerle

The nucleotide sequence of aroH, the structural gene for the tryptophan-sensitive 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase [DAHPS(Trp)], is presented, and the deduced amino acid sequence of AroH is compared with that of the tyrosine-sensitive (AroF) and phenylalanine-sensitive (AroG) DAHPS isoenzymes. The high degree of sequence similarity among the three isoenzymes strongly indicat...

Journal: :Iranian journal of veterinary research 2015
P R Shivahre A K Gupta A Panmei B R Yadav M Bhakat T K Mohanty A Kumaresan V Kumar S K Dash S Singh

In vitro fertility assessment using fluorescent technique is a better predictor of fertility status of bulls as compared to traditional semen quality assessment techniques, therefore, the study was planned to assess in vitro fertility status of bulls based on conventional and fluorescent techniques. Seventy-three ejaculates were collected from 12 Murrah buffalo bulls maintained at Artificial Br...

Journal: :international journal of fertility and sterility 0
mohammad reza deemeh marziyeh tavalaee seyed mahdi ahmadi seyed asadolah kalantari seyed vali alavi nasab mohammad hassan najafi

this is the first report implementing combined density gradient centrifugation/zeta (dgc/zeta) sperm selection procedure for a couple with eleven previous intra cytoplasmic sperm injection/ in vitro fertilization (icsi/ivf) failure cycles. semen analysis was carried out according to world health organization criteria. protamine deficiency, dna fragmentation and morphology were assessed by chrom...

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