Abstract: A method for the production of a polypeptide of interest in a host cell, which method comprises: a. providing a host cell which harbours a nucleic acid encoding a polypeptide of interest, wherein the polypeptide of interest is modified so that it comprises fewer methionine and/or lysine residues than a reference polypeptide, excluding any initial methionine amino acid located at the N-terminal end of the polypeptide sequence; b. cultivating the host cell under conditions suitable for production of the polypeptide; and, optionally, c. recovering the compound of interest. The invention also relates to a modified polypeptide which comprises fewer methionine and/or lysine residues than a reference polypeptide, excluding any initial methionine amino acid located at the N-terminal end of the polypeptide sequence.

Abstract: A method and a system for payment service integration in a network-based market computer system. For example, an item listing may be created on a market computer system, the item listing being in respect of an item which is offered for sale by a seller. If terms of a transaction in respect of the item listing are agreed upon by a buyer and the seller, the seller being a non-registered user of the market computer system, payment between the buyer and the seller via an electronic payment service may be facilitated at the market computer system. The payment may be subject to buyer protection provided by the electronic payment service.