The prokaryotic DNA polymerase III clamp loader complex loads the beta clamp onto DNA to link the replication complex to DNA during processive synthesis and unloads it again once synthesis is complete. This minimal complex consists of one delta, one delta' and three gamma subunits, all of which possess an AAA+ module--though only the gamma subunit exhibits ATPase activity. Here clues to underly...

tillage and press wheel weight play an important role in seedling emergence, crop establishment and growth. an optimal combination of tillage implements and suitable press wheel weights should increase grain yield. this study investigated the effect of tillage systems and press wheel weights on dry land wheat (triticum aestivum l.) seedling emergence and grain yields in izeh, khuzestan province...

We find an explicit expression of the Tutte polynomial of an $n$-fan. We also find a formula of the Tutte polynomial of an $n$-wheel in terms of the Tutte polynomial of $n$-fans. Finally, we give an alternative expression of the Tutte polynomial of an $n$-wheel and then prove the explicit formula for the Tutte polynomial of an $n$-wheel.

The replication of a genome is a fundamental biological process that every organism must perform in order to transmit its genetic makeup to its progeny. We have been studying the molecular machines that are used to rapidly and accurately replicate the DNA genome of bacteria. In addition to the polymerase (the actual copying machine), organisms have a set of assemblies that enable the polymerase...

Clamp loaders belong to a family of proteins known as ATPases associated with various cellular activities (AAA+). These proteins utilize the energy from ATP binding and hydrolysis to perform cellular functions. The clamp loader is required to load the clamp onto DNA for use by DNA polymerases to increase processivity. ATP binding and hydrolysis are coordinated by several key residues, including...

Replicative helicases play central roles in chromosome duplication and their assembly onto DNA is regulated via initiators and helicase loader proteins. The Escherichia coli replicative helicase DnaB and the helicase loader DnaC form a DnaB6-DnaC6 complex that is required for loading DnaB onto single-stranded DNA. Overexpression of dnaC inhibits replication by promoting continual rebinding of D...

1. Introduction NetOwl TM Server is a powerful text analysis software product developed by IsoQuest, Inc. It supports business intelligence by providing fast and easy access to information stored on local Intranets and the global Internet. It organizes, analyzes, and summarizes data extracted by NameTag TM and any Full-Text search engine. It then presents the data for either searching or browsi...

Wheel wear has been a concern in the railway for several decades. Studying the form change of the wheel/rail contacts in particular railways consisting of sharp curves helps to identify the risk of severe or catastrophic wear to minimize maintenance costs in order to be competitive in the transportation business. In this paper, the wheel/rail contact was studied on the particular railways. The ...

The loader has a lot of recoverable braking energy due to its larger mass and frequent starts/stops. For 5-ton pure electric drive loader, an emergency intention recognition strategy based on hydraulic pressure was proposed. acceleration pedal brake used distinguish different intentions, the system as feedback parameter for improve safety. Aiming at electro-hydraulic composite mode switching, c...