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In the aftermath of the Islamic Revolution and due to doubts cast on the usurious character of interests on debenture bonds, the Iranian legislator was led to replace the latters by the so-called profit-sharing securities (ORAGHE MOSHAREKAT). The enactment, of the law and regulation, (in 1997 and 1998) concerning the issuing of profit-sharing securities has given rise to doctrinal discussions regarding the mechanism and legal nature of these kinds of securities. In fact, the question is whether or not these new sorts of securities are identical in nature to the old debenture bonds. The objective of the present article is to consider, firstly the mechanism and secondly the legal nature of the profit-sharing securities.

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Aim: Follistatin-like protein 1 (FSTL1) is a secreted glycoprotein that plays an important role in regulating cell survival, proliferation, differentiation, migration, inflammation, and modulating the immune system. The FK domain in FSTL1 has 10 conserved cysteine residues that form 5 disulfide bonds. Despite extensive studies on the function of FSTL1, limited structural information is available about this biologically important molecule.
Materials and Methods:Using the SWISS-MODEL server and using the crystal structure of the FK domain of the mouse FSTL1 protein with the code (PDB: 6jzw) as a template, structural models of the FK domain of the human FSTL1 protein were prepared. In the next step, the resulting structures were checked using Swiss-PDB Viewer 4.10, Chimera 1.12 software, Ramachandaran diagram and PDBSUM server, in terms of the distance between two cysteine residues, the modeling error range, and the formation of disulfide bonds. Molecular dynamics simulations were performed using the AMBER software package with the ff14SB force field.
Results: The results showed that the FK domain without disulfide bond has root mean square deviations (RMSD) and root mean square fluctuations (RMSF), higher than the native FK domain. In addition, the radius of gyration in domain without disulfide bonds is significantly lower than that of native FK domain. The results show that the disulfide bonds of the FK domain play a role in the stability of the structural folding of the FK domain and the removal of these bonds increases the structural flexibility of this domain.
 

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The main purpose of this study is to examine the household’s behavior in response to the kinds of the wealth and the estimation of marginal propensity to consume out of wealth. By using Ando-Modigliani consumption model and applying Engle-Granger co-integration strategy, marginal propensity to consume out of wealth is estimated in Iran during 1982-2008. The various forms of wealth as durable good, housing, bonds, savings, combinative and normal good are considered. Results show that households respond to kinds of wealth differently. This study finds that the marginal propensities to consume (MPCs) out of labor income and wealth, in the form of durable good, are 0.93 and 0.012, respectively. In addition, the MPCs out of labor income and wealth in the form of housing are 0.8 and 0.027, respectively. Regarding bonds as wealth, the corresponding MPCs are 0.67 and 0.055, respectively. For savings, the corresponding MPCs are 0.58 and 0.081, respectively. In combinative form of wealth, the computed MPCs are 0.7 and 0.04, respectively. Finally, considering normal goods as wealth, this study reaches the MPCs of orders 0.59 and 0.16, respectively. The long-run relationship shows that individuals’ MPC is about 0.79 apart from what types of wealth they hold. One important finding is liquidity allocation by individuals facing various kinds of wealth. This study indicates the fastest velocity of liquidation of savings and the lowest velocity of liquidation of durable goods.