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The Federal Taxpayer Registry (Spanish: Registro Federal de Contribuyentes, RFC), also known as RFC number, is a tax identification number required by any physical or natural person or moral or juridical person (legal entity) in Mexico to carry out any lawful economic activity for which they are obliged to pay taxes, with some exceptions.
Número de Identificação Fiscal (NIF) - for individual people / Número de Identificação de Pessoa Coletiva (NIPC) – for companies Portugal NIF or NIPC PT 9 digits; the last digit is the check digit. The first digit depends on what the number refers to, e.g.: 1-3 are regular people, 5 are companies. Codul de identificare fiscală Romania CIF
This number is required in many legal actions and business transactions. When used for tax purposes, it receives the name of Número de identificación fiscal (NIF). The DNI is enough to visit and register as a resident in the member countries of the European Economic Area (EEA) and Switzerland. It can also be used for short-term visits in the ...
NIF or Nif may refer to: Localities. Nif, former name of the town of Kemalpaşa in western Turkey; Mount Nif, near Kemalpaşa, Turkey; Nifty Airport, IATA airport ...
The nif genes are genes encoding enzymes involved in the fixation of atmospheric nitrogen into a form of nitrogen available to living organisms. The primary enzyme encoded by the nif genes is the nitrogenase complex which is in charge of converting atmospheric nitrogen (N 2) to other nitrogen forms such as ammonia which the organism can use for various purposes.
The Nif regulon is a set of seven operons used to regulate nitrogen fixation in the coliform bacterium Klebsiella pneumoniae under anaerobic and microaerophilic conditions. [1] It includes 17 nif genes , and is situated between the his and the Shi-A operon of the bacterium.