摘要:
A molecular construct comprises a donor label, an acceptor label, a linker peptide disposed between the donor and the acceptor, the linker having a cleavage site sequence, and a spacer between at least one of (a) the donor and the cleavage site sequence and (b) the acceptor and the cleavage site sequence. Preferably, the construct is selected from the group consisting of CFP-(SGLRSRA)-SNAP-25-(SNS)-YFP (SEQ ID NO: 9), and CFP-(SGLRSRA)-synaptobrevin-(SNS)-YFP (SEQ ID NO: 10). In preferred embodiments, the linker peptide is a substrate of a botulinum neurotoxin selected from the group consisting of synaptobrevin (VAMP), syntaxin and SNAP-25, or a fragment thereof that can be recognized and cleaved by the botulinum neurotoxin. Advantageously, the spacer increases the electronic coupling between the donor label and the acceptor label relative to a corresponding construct without the spacer.
摘要翻译:分子构建体包括供体标记,受体标记,置于供体和受体之间的接头肽,接头具有切割位点序列,以及(a)供体和切割位点序列之间的间隔基和 (b)受体和切割位点序列。 优选地,构建体选自CFP-(SGLRSRA)-SNAP-25-(SNS)-YFP(SEQ ID NO:9)和CFP-(SGLRSRA)-Synaptobrevin-(SNS)-YFP(SEQ 编号:10)。 在优选的实施方案中,接头肽是肉毒杆菌神经毒素的底物,其选自由肉毒杆菌神经毒素可识别和切割的突触连锁蛋白(VAP),突触蛋白(S)或SNAP-25,或其片段。 有利地,间隔物相对于没有间隔物的相应构建体增加了供体标签和受体标记之间的电子偶联。
摘要:
Sulfomethylsuccinates of the formula: wherein R is an alkyl, alkenyl, alkynyl, alkoxylated alkyl, cycloalkyl, cycloalkenyl, cycloalkynyl, branched alkyl, branched alkenyl, branched alkynyl, branched alkoxylated alkyl, aromatic, substituted alkyl aromatic, substituted alkenyl aromatic or substituted alkoxylated aromatic group; M is a cation, hydrogen, amine or ammonium salt or combinations thereof, and each M may be the same as or different from the other; and n is from 1 to about 6. Processes for synthesizing the sulfomethylsuccinates are also provided. The sulfomethylsuccinates can be used as surfactants, emulsifiers, skin feel agents, film formers, rheological modifiers, solvents, release agents, lubrication agents, conditioners, and dispersants, etc.
摘要:
Apparatuses and methodologies are described that increase system capacity in a multi-access wireless communication system. Spatial dimensions may be utilized to distinguish between multiple signals utilizing the same channel and thereby increase system capacity. Signals may be separated by applying beamforming weights based upon the spatial signature of the user device-base station pair. Grouping spatially orthogonal or disparate user devices on the same channel facilitates separation of signals and maximization of user device throughput performance. User devices may be reassigned to groups periodically or based upon changes in the spatial relationships between the user devices and the base station.
摘要:
A portable electronic device includes a housing including a receptacle, a slot communicating with the receptacle and a protrusion located in the slot; a stylus releasably received in the receptacle, the stylus defining a notch and a passage communicating with the notch; and an attachment element wrapping on the protrusion and passing through the notch and the passage to extend outward from the portable electronic device.
摘要:
A personal cleansing composition exhibiting enhanced skin feel (i.e., enhanced skin softness, reduced skin irritation, reduced residue, and reduced greasy, tacky, or tight skin feel), enhanced foaming and lather, and good cleansing, more specifically, a personal cleansing composition comprising a mixture of alpha sulfonated alkyl esters or sulfonated fatty acids, or salts thereof, with an alkyl sulfoacetate or ethoxylated alkyl sulfoacetate, or salts thereof, secondary surfactants, and optional additives.
摘要:
A personal cleansing composition exhibiting enhanced skin feel (i.e., enhanced skin softness, reduced skin irritation, reduced residue, and reduced greasy, tacky, or tight skin feel), enhanced foaming and lather, and good cleansing, more specifically, a personal cleansing composition comprising a mixture of alpha sulfonated alkyl esters or sulfonated fatty acids, or salts thereof, with an alkyl sulfoacetate or ethoxylated alkyl sulfoacetate, or salts thereof, secondary surfactants, and optional additives.
摘要:
A shared signaling channel can be used in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system to provide signaling, acknowledgement, and power control messages to access terminals within the system. The shared signaling channel can be assigned to a predetermined number of sub-carriers within any frame. The assignment of a predetermined number of sub-carriers to the shared signaling channel establishes a fixed bandwidth overhead for the channel. The actual sub-carriers assigned to the channel can be varied periodically, and can vary according to a predetermined frequency hopping schedule. The amount of signal power allocated to the signaling channel can vary on a per symbol basis depending on the power requirements of the communication link. The shared signaling channel can direct each message carried on the channel to one or more access terminals. Unicast messages allow the channel power to be controlled per the needs of individual communication links.
摘要:
A shared signaling channel can be used in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system to provide signaling, acknowledgement, and power control messages to access terminals within the system. The shared signaling channel can be assigned to a predetermined number of sub-carriers within any frame. The assignment of a predetermined number of sub-carriers to the shared signaling channel establishes a fixed bandwidth overhead for the channel. The actual sub-carriers assigned to the channel can be varied periodically, and can vary according to a predetermined frequency hopping schedule. The amount of signal power allocated to the signaling channel can vary on a per symbol basis depending on the power requirements of the communication link. The shared signaling channel can direct each message carried on the channel to one or more access terminals. Unicast messages allow the channel power to be controlled per the needs of individual communication links.