| gene products, pol | Retroviral proteins coded by the pol gene. Often synthesised as a gag-pol fusion protein (fusion proteins, gag-pol) and later cleaved into final products that include reverse transcriptase, endonuclease/integrase, and viral protease. Pol is short for polymerase, the enzyme class of reverse transcriptase. (12 Dec 1998) |
|---|---|
| gene products, rev | Trans-acting nuclear proteins whose functional expression are required for HIV viral replication. Specifically, the rev gene products are required for processing and translation of the HIV gag and env mRNAs, and thus rev regulates the expression of the viral structural proteins. Rev can also regulate viral regulatory proteins. A cis-acting antirepression sequence (car) in env, also known as the rev-responsive element (rre), is responsive to the rev gene product. Rev is short for regulator of virion. (12 Dec 1998) |
| gene products, rex | Post-transcriptional regulatory proteins required for the accumulation of mRNAs that encode the gag and env gene products in HTLV-I and HTLV-II. The rex (regulator x; x is undefined) products act by binding to elements in the ltr. (12 Dec 1998) |
| gene products, tat | Trans-acting transcription factors. Nuclear proteins whose expression is required for HIV viral replication. The tat protein stimulates HIV-ltr-driven RNA synthesis for both viral regulatory and viral structural proteins. Tat stands for trans-activation of transcription. (12 Dec 1998) |
| gene products, tax | Transcriptional trans-acting proteins of the promoter elements found in the long-terminal repeats (ltr) of HTLV-I and HTLV-II. The tax (trans-activator x; x is undefined) proteins act by binding to enhancer elements in the ltr. (12 Dec 1998) |
| gene products, vif | A 23 kD regulatory protein important for virion infectivity in HIV. The protein is found in the cytoplasm of HIV-infected cells and is not absolutely required for virion formation. (12 Dec 1998) |
| gene products, vpr | Trans-acting proteins which accelerate virus replication in HIV. The vpr proteins act in trans to increase the levels of HIV specified proteins. Vpr is short for viral protein r, where r is undefined. (12 Dec 1998) |
| gene products, vpu | Non-glycosylated, membrane-associated, 16 kD proteins which are expressed in large amounts in cells infected with HIV-1. The proteins are required for efficient virion maturation and release. They are not present in HIV-2 nor in siv. Vpu is short for viral protein u, with u undefined. (12 Dec 1998) |
| meat products | Articles of food which are derived by a process of manufacture from any portion of carcasses of any animal used for food (e.g., head cheese, sausage, scrapple). (12 Dec 1998) |
| waste products | Debris resulting from a process that is of no further use to the system producing it. The concept includes materials discharged from or stored in a system in inert form as a by-product of vital activities. (12 Dec 1998) |
| conventional forest products | Any commercial roundwood product (boards, dimension lumber, pulp and paper products) except fuelwood. (05 Dec 1998) |
| poultry products | Food products manufactured from poultry. (12 Dec 1998) |
| household products | Substances or materials used in the course of housekeeping or personal routine. (12 Dec 1998) |
| specialty chemicals and products | Chemicals and chemical products used in a research, industrial, or household setting. Included here are the specific drug preparations, as well as the substances involved in the manufacture and stabilization of pharmaceutical preparations and agricultural agents. (12 Dec 1998) |
| natural products | Naturally occurring compounds that are end products of secondary metabolism; often, they are unique compounds for particular organisms or classes of organisms. (05 Mar 2000) |