搜索结果: 1-15 共查到“理学 trans-AT”相关记录46条 . 查询时间(0.046 秒)
Trans-AT 聚酮合成酶（PKSs）是一类能够合成大量结构特殊、活性多样的聚酮分子的酶。这些酶中同时存在多种特殊模块或结构域，如β-分支模块、分支结构域和BV氧化结构域等，可在装配线上直接对延伸的聚酮骨架进行修饰，增加产物的结构多样性。然而，在trans-AT PKS的非经典催化过程中，单一模块或功能域的迭代使用过程尤为特殊。
Trans Effects in Nitric Oxide Binding to Myoglobin Cavity Mutant H93G
biology and medicine, basic studies nitric oxide biochemistry heme histidine imidazoles ligands mutants myoglobin proteins
2016/5/23
When nitric oxide (NO) binds to heme proteins, it exerts a repulsive trans effect on the proximal ligand, resulting in weakening or rupture of the proximal ligand-iron bond. The general question of wh...
Rotational fission of trans-Neptunian objects:the case of Haumea
Kuiper belt general – Kuiper belt objects individual Haumea – minor planets, asteroids general
2015/12/25
We present several lines of evidence, based on different kinds of observations, and we conclude that it is likely that rotational fission has occurred for a fraction of the known trans-Neptunian objec...
Identification of a Minimal Cis-element and Cognate Trans-factors Required for the Regulation of Rac2 Gene Expression during K562 Cell Differentiation
Rac2 Gene Expression
2015/5/25
This dissertation examines the molecular mechanisms regulating Rac2 gene expression during cell differentiation and identification of a minimal cis-element required for the induction of Rac2 gene expr...
Genetic loci associated with circulating phospholipid trans fatty acids: a meta-analysis of genome-wide association studies from the CHARGE Consortium
arachidonic acid genome-wide association meta-analysis phospholipid trans fatty acids
2018/12/20
Background: Circulating trans fatty acids (TFAs), which cannot be synthesized by humans, are linked to adverse health outcomes. Although TFAs are obtained from diet, little is known about subsequent i...
Damming of River Indus during Late Quaternary in Ladakh Region of Trans-Himalaya, NW India：Implications to Lake formation-climate and tectonics
Late Quaternary Holocene Trans Himalaya Indus Palaeolake deposits climate
2014/1/16
Indus river valley basin in Northwest Indian Himalaya is tectonically unstable, exhibiting a complex topography, landscape relief and varied Quaternary sedimentation. A 422 km transact along the Indus...
Photoisomerisation of trans-stilbene in solution may be directly assisted by solvent collisions
Photoisomerisation of trans-stilbene solution assisted solvent collisions Chemical Physics
2012/4/20
Gas phase thermal isomerization rates of trans-stilbene obey the Arrhenius law at T~300 K, indicating that intramolecular vibrational redistribution (IVR) is complete or not restrictive for the reacti...
TNOs are Cool: A survey of the trans-Neptunian region V. Physical characterization of 18 Plutinos using Herschel PACS observations
Kuiper belt objects Plutinos planetary systems observational photometric
2012/2/23
We present Herschel PACS photometry of 18 Plutinos and determine sizes and albedos for these objects using thermal modeling. We analyze our results for correlations, draw conclusions on the Plutino si...
Hydrolysis Mechanism of the NAMI-A-type Antitumor Complex (HL)[trans-RuCl4L(dmso-S)] (L=1-methyl-1,2,4-triazole)
NAMI-A-type complex Anticancer activity Hydrolysis Density functional theory Conductor-like polarizable continuum model
2012/4/5
The hydrolysis process of Ru(III) complex (HL)[trans-RuCl4L(dmso-S)] (L=1-methyl-1,2,4-triazole and dmso-S=S-dimethyl sulfoxide) (1), a potential antitumor complex similar to the well-known antitumor ...
Supporting Information for the Paper: Optimal Ternary Constant-Composition Codes of Weight Four and Distance Five, IEEE Trans. Inform. Theory, To Appear
Supporting Information for the Paper Optimal Ternary Constant-Composition Codes of Weight Four Distance Five
2011/1/17
Supporting Information for the Paper: Optimal Ternary Constant-Composition Codes of Weight Four and Distance Five, IEEE Trans. Inform. Theory, To Appear.
A mid-term astrometric and photometric study of Trans-Neptunian Object (90482) Orcus
A mid-term astrometric photometric study
2011/1/13
From CCD observations of a fixed and large star field that contained the binary TNO Orcus, we have been able to derive high-precision relative astrometry and photometry of the Orcus system with respec...
Atmospheric lifetimes and Ozone Depletion Potentials of trans-1-chloro-3,3,3-trifluoropropylene and trans-1,2-dichloroethylene in a three-dimensional model
Atmospheric lifetimes and Ozone Depletion trans-1-chloro-3,3,3-trifluoropropylene trans-1,2-dichloroethylene a three-dimensional model
2010/11/30
The chloroalkenes trans-1-chloro-3,3,3-trifluoropropylene (tCFP) and trans-1,2-dichloroethylene (tDCE) have been proposed as candidate replacements for other compounds in current use that cause concer...
Trans-Pacific transport of reactive nitrogen and ozone to Canada during spring
Trans-Pacific reactive nitrogen ozone Canada spring
2010/9/21
We interpret observations from the Intercontinental Chemical Transport Experiment, Phase B (INTEX-B) in spring 2006 using a global chemical transport model (GEOS-Chem) to evaluate sensitivities of the...
Trans-Pacific transport of Asian dust and CO: accumulation of biomass burning CO in the subtropics and dipole structure of transport
Trans-Pacific transport Asian dust and CO biomass burning CO the subtropics and dipole structure of transport
2010/8/12
In May 2003, both MODIS aerosol optical depth (AOD) and carbon monoxide (CO) measurements from MOPITT show significant trans-Pacific transport to North America. We apply the global chemical transport ...
SERS Measurements of Magnetic Stretching Force-Induced Trans-Gauche Conformational Change
SERS Measurements Force-Induced Trans-Gauche Conformational Change
2010/9/17
The effects of stretching forces on covalently bridged 3-mercaptopropanoic acid molecules between magnetic particles (MPs) and Ag nano-particles (NPs) were studied by surface-enhanced Raman scatterin...