Seat, in particular an aircraft seat, comprising: a seat support structure comprising at least one seat surface (1.1) with a seat surface frame (1.1.1) and a backrest (1.2) with a backrest frame (1.2.1) being pivotable relative to the seat surface (1.1), a base support element supporting the seat support structure, and a seat adjustment arrangement, - which comprises at least one coupling unit movable relative to the base support element, the coupling unit being configured to connect the seat surface frame (1.1.1) and the backrest frame (1.2.1) to one another and being provided with at least one bearing element, and - which comprises at least one guide element in which the bearing element is movably guided, wherein the seat adjustment arrangement is adapted to transfer the seat support structure into a sitting position, a comfort and/or lying position by displacing the bearing element along the guide element and wherein the seat surface frame (1.1.1) and the backrest frame (1.2.1) are pivoted at a same attachment area relative to each other, wherein the coupling unit comprises a first coupling element (4.1) connecting the seat surface frame (1.1.1) to the guide element and a second coupling element (4.2) connecting the backrest frame (1.2.1) to the guide element, and wherein the base support element comprises the attachment area in which a rear region of the seat surface frame (1.1.1) is pivotably fixed and in which the backrest frame (1.2.1) is pivotably fixed relative to the seat surface frame (1.1.1). a seat support structure comprising at least one seat surface (1.1) with a seat surface frame (1.1.1) and a backrest (1.2) with a backrest frame (1.2.1) being pivotable relative to the seat surface (1.1), a base support element supporting the seat support structure, and a seat adjustment arrangement, - which comprises at least one coupling unit movable relative to the base support element, the coupling unit being configured to connect the seat surface frame (1.1.1) and the backrest frame (1.2.1) to one another and being provided with at least one bearing element, and - which comprises at least one guide element in which the bearing element is movably guided, - which comprises at least one coupling unit movable relative to the base support element, the coupling unit being configured to connect the seat surface frame (1.1.1) and the backrest frame (1.2.1) to one another and being provided with at least one bearing element, and - which comprises at least one guide element in which the bearing element is movably guided, wherein the seat adjustment arrangement is adapted to transfer the seat support structure into a sitting position, a comfort and/or lying position by displacing the bearing element along the guide element and wherein the seat surface frame (1.1.1) and the backrest frame (1.2.1) are pivoted at a same attachment area relative to each other, wherein the coupling unit comprises a first coupling element (4.1) connecting the seat surface frame (1.1.1) to the guide element and a second coupling element (4.2) connecting the backrest frame (1.2.1) to the guide element, and wherein the base support element comprises the attachment area in which a rear region of the seat surface frame (1.1.1) is pivotably fixed and in which the backrest frame (1.2.1) is pivotably fixed relative to the seat surface frame (1.1.1).