upstream


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up·stream

(ŭp'strēm),
Refers to nucleic acid base sequences proceeding the opposite direction from expression.

upstream

In genetics, at a stage in the sequence of processes in the expression of a gene that is further away from the final protein product. The term is also used to mean in the direction of the 5'-end of a chain of bases in DNA (see PHOSPHODIESTER BOND). In both cases the opposite sense is called ‘downstream’.

upstream

(of a LOCUS on a DNA molecule) relating to a position in the opposite direction to that in which TRANSCRIPTION occurs, often before the transcription start site in DNA. By convention, the DNA sequence of genes is shown from 5′ (left) to 3′(right), so that if A is on the 5′ side of B, A is upstream of B. Compare DOWNSTREAM.
References in periodicals archive ?
The oil and gas upstream activities market consists of sales of crude oil and natural gas by entities (organizations, sole traders or partnerships) that undertake the pre-refining activities of crude oil and natural gas production.
Year-to-date, Chevron's upstream business has accounted for 85 percent of capital and exploratory expenditures (the $400 million acquisition of the Pasadena refinery in Texas counted as 'Downstream').
'It is an honour to be at the helm of our upstream ventures and supporting the company's growth and diversification which will lend to a prosperous future for Oman.
"Constellation in the Gulf of Mexico was the first Upstream major project to come onstream in 2019, followed by the second stage of the West Nile Delta development, the Giza and Fayoum fields, in Egypt and the Angelin development offshore Trinidad," reads the report.
Soorya Tejomoortula, oil and gas analyst at GlobalData, said: "Shell has spread its new-build capex for the development of 60 upcoming upstream projects.
Upstream improves the safety and security of connected vehicles and services built around them by monitoring business-critical events and identifying cyber threats in real-time via a centralized cloud-based analysis of multiple automotive data feeds, including telematics and mobile applications.
There is an intense problem of demand and supply in the upstream sector of the oil and gas industry.
The following organizations have been awarded grants under the NJHI: Upstream Action Acceleration initiative to serve the communities listed:
Moreover, she argued, Ogra did not have the capacity and required expertise to take over the upstream oil and gas regulator.
New Delhi [India], Sep 25 ( ANI ): e-commerce marketplace Flipkart has announced the acquisition of Israel-based Upstream Commerce, a world leader in real-time pricing and product assortment optimization solutions.
In 1H18 the company announced the planned acquisition of upstream assets in New Zealand and bought a 20% stake in two fields in the United Arab Emirates for the total amount of USD2.1 billion.
The 4 Rivers Floating Lodge, located in the downstream of the Preat River, was bound to be affected by the torrential rains, the interval torrents and the flood peaks of several upstream rivers.

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