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Under Islamic and Iranian Law, a married couple have certain duties towards each other which are referred to as conjugal duties. These duties are dealt with under the heading of Tamkin (which generally means obedience) including general obedience (tamkine-e amm) and special obedience (tamkine-e khass). Apart from conjugal duties a woman has no other duties towards her husband. Therefore if a woman does work at the order of her husband where according to custom there is a wage for such a work she is entitled to such a wage for her work, unless it is proved that she worked gratuitously. Note 6 of the Amendment of Divorce Provisions Act 1992 (1371) explains the cases where a woman can demand remuneration (referred to as ujrat al-mithl: equivalent wage) for her work at home. According to Note 3 of the Act, a husband must pay all rights of his wife, including dower, maintenance, dowry and equivalent wage in cach, before the execution of divorce. This paper deals with the legal basis of the right of wives to recieve the payment of remuneration for the work done by her at home under Islamic and Iranian Law and the way that it is enforced in courts.

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The CD80 protein, a member of the super-family of immunoglobulin, is a transmembrane protein expressed on the surface of the antigen-presenting cells (APC). This protein has two receptors on the surface of T cells (CTLA-4 and CD28), due to the binding of this protein to these receptors, the inhibitory and stimulatory pathway in the T cells begin, respectively. Naturally, CD80 proteins tend to have more binding affinity to CTLA-4 than CD28, and this is a factor in the extinction of T cells in the immune system in order to prevent autoimmunity. The aim of the present study is to create a variant of the CD80 protein that has an increased binding affinity to CD28 to bind to this receptor more strongly and induce more simulate pathways than the wild type of this protein (primary CD80 protein) in T cells. To identify this variant, first, the ancestral sequence was mutated by R software at positions 31 and 92 with amino acids that play an important role in the formation of hydrogen bonds. The R software output sequences were modeled with the SWISS-MODEL server. Then, each output model was docked with the HADDOCK server, and finally, the electrostatic and van der Waals energies between the receptors and the ligands were calculated. Among all the built-in models, the mutated K31Y, R92F has the best electrostatic and van der Waals energies and has the ability to have a much better connection to its CD28 receptor compared to the ancestral type of CD80.