摘要:
The present invention provides an isolated nucleic acid molecule encoding both a soluble and membrane-bound human .beta.-1,6-N-acetylglucosaminyltransferase, the I-branching enzyme (IGnT). The invention also provides vectors containing the isolated nucleic acid molecule encoding human IGnT as well as recombinant host cells transformed with the vectors. The invention further provides a method of preparing a membrane-bound form of human IGnT and methods of preparing and purifying soluble human IGnT and active fragments of either form. Also provided are antisense oligonucleotides complementary to a nucleic acid molecule encoding a human IGnT or an active fragment thereof, antibodies directed to the human IGnT, pharmaceutical compositions related to the human IGnT and transgenic nonhuman mammals expressing DNA encoding normal or mutant human IGnT. Also provided are methods for regulating the expression of human IGnT and methods for modifying a biological function mediated by the regulatory activity of human IGnT. Methods of detecting the presence of linear polylactosaminoglycans expressing i antigenic determinants on a cell surface also are provided.
摘要:
The present invention provides novel purified human lysosomal membrane sialoglycoproteins. These novel human proteins, lamp-1 and lamp-2, are highly glycosylated and are the major carriers of polylactosaminoglycan, when expressed on the cell surface participate in various cellular adhesion interactions.
摘要:
The present invention provides a novel .beta.1.fwdarw.6 N-acetylglucosaminyltransferase, which forms core 2 oligosaccharide structures in O-glycans, and a novel acceptor molecule, leukosialin, CD43, for core 2 .beta.1.fwdarw.6 N-acetylglucosaminyltransferase activity. The amino acid sequences and nucleic acid sequences encoding these molecules, as well as active fragments thereof, also are disclosed. A method for isolating nucleic acid sequences encoding proteins having enzymatic activity is disclosed, using CHO cells that support replication of plasmid vectors having a polyoma virus origin of replication. A method to obtain a suitable cell line that expresses an acceptor molecule also is disclosed.
摘要:
A UV-ray sensitive composition, comprising a photo activator forming a free radical by the irradiation of UV-rays, a discoloring agent which exhibits a color change in visible region of spectrum through the action of this free radical, and a UV-ray absorber.
摘要:
An electrically programmable read only memory is equipped with latch circuits for sequentially introducing series signals which are fed through external terminals. The converter includes sequentially operated switch elements and latch circuits in order to convert the series signals into parallel signals. The thus converted parallel signals are written simultaneously in a memory array via address decoder operated selection switch elements. According to this method, the writing operations into the memory array can be conducted at a high speed even when one writing operation is relatively long as a result of the parallel signal action.
摘要:
An electrically programmable read only memory is equipped with latch circuits for sequentially introducing series signals which are fed through external terminals. The converter includes sequentially operated switch elements and latch circuits in order to convert the series signals into parallel signals. The thus converted parallel signals are written simultaneously in a memory array via address decoder operated selection switch elements. According to this method, the writing operations into the memory array can be conducted at a high speed even when one writing operation is relatively long as a result of the parallel signal action.
摘要:
A photosensitive resin composition which comprises (1) an ethylenically unsaturated compound which can be addition polymerized to form a high molecular compound, said addition polymerization being initiated by a free radical and chain-propagating, (2) a 2-polycyclic aryl-4,5-diphenylimidazolyl dimer wherein the polycyclic aryl group at the 2-position comprises at least two benzene rings condensed each other and (3) a heterocyclic mercaptan compound, said photosensitive resin composition being excellent in having a high photopolymerization initiation potency.
摘要:
In an oscillation circuit wherein three or a greater odd number of inverters each of which is composed of a load FET and a driving FET are connected in cascade, a capacitor is connected between the input and output of at least one of the inverters so as to construct a Miller integrator, and the output of the final-stage inverter is connected to the input of the first-stage inverter, the improvement comprising the fact that impedance means, such as resistance, which has a positive temperature coefficient is connected in series with the capacitor, whereby the oscillation frequency of the oscillation circuit is prevented from fluctuating due to a change of the ambient temperature.
摘要:
An electronic device is provided. In the electronic device, a cover is securely fitted to a predetermined positioning hole formed in a printed board using a ready-made cover without using solder when the cover is installed in the printed board, so that the cover is prevented slipping from the printed board. The positioning hole is formed in a predetermined position of the printed board, and a cover claw that can be fitted to the positioning hole of the cover is formed in the cover, so that the cover covers the principal surface of the printed board to provide an electronic device.
摘要:
A high pressure discharge lamp lighting apparatus includes a high pressure discharge lamp and a power supply apparatus, wherein in a steady state lighting operation, an alternating current of a steady state lighting frequency and alternating current of a low frequency are supplied by turns to the high pressure discharge lamp, and wherein in a small electric power lighting in which electric power to be applied is smaller than that of the steady state lighting, alternating current of a small electric power lighting frequency and direct current are supplied by turns to the high pressure discharge lamp.