Results 91 to 100 of about 4,502,073 (308)

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Metric in Feature Space [PDF]

open access: yes, 2009
In this paper our purpose is to define a metric in feature space. The metric finds the correlation distance between two features. It may be used in many applications. An application showing the utility of the proposed metric for feature selection is described here.
C. A. Murthy, Sourav Pradhan
openaire   +2 more sources

Some Fixed point Theorems in Generalization Metric space [PDF]

open access: yes, 2014
In this paper we establish some fixed point results for mapping satisfying sufficient contractive conditions on a complete G-metric space.
Tiwari, Rashmi   +2 more
core  

Completion of Complex Valued Dislocated Metric Space

open access: yes, 2022
In this paper, we prove an important property of metric spacewhich is the existence and uniqueness of completion. Firstly we gavecompletion of a complex-valued dislocated metric space and then proveits uniqueness.AMS (MOS) Subject Classification Codes ...
Muhammad Tahir; Department of Mathematics, Minhaj University Lahore   +1 more
core  

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

09451 Abstracts Collection – Geometric Networks, Metric Space Embeddings and Spatial Data Mining [PDF]

open access: yes, 2010
From November 1 to 6, 2009, the Dagstuhl Seminar 09451 ``Geometric Networks, Metric Space Embeddings and Spatial Data Mining'' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics.
Gudmundsson, Joachim   +4 more
core   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

Metric dimension of metric transform and wreath product

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
Let $(X,d)$ be a metric space. A non-empty subset $A$ of the set $X$ is called resolving set of the metric space $(X,d)$ if for two arbitrary not equal points $u,v$ from $X$ there exists an element $a$ from $A$, such that $d(u,a) \neq d(v,a)$.
B.S. Ponomarchuk
doaj   +1 more source

METRIC PROJECTIONS IN LINEAR METRIC SPACES

open access: yesDemonstratio Mathematica, 1990
Summary: Various properties of the metric projection are known in normed linear spaces. \textit{G. Pantelidis} [Math. Ann. 184, 30--48 (1969; Zbl 0175.42001)] discussed some of these properties in linear metric spaces. In this paper we also discuss some necessary and sufficient conditions for the metric projections to be continuous and Lipschitzian in ...
openaire   +1 more source

Ultra Generalized Metric Space [PDF]

open access: yes, 2020
In this paper, for n is a natural number such that n→∞, we described ultra generalized metric space as an ultra generalization of a metric space in such a way that the triangle inequality is replaced by similar ones which involve n unit points instead of
Göçür, Orhan
core   +1 more source

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