generation of catalytic spliceosome for first transesterification step (Q21105804)
Formation of a catalytic spliceosome complex ready to perform the first splicing reaction. This occurs by an ATP-dependent conformational change of the pre-catalytic spliceosome.
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aliases formation of catalytic spliceosome for first transesterification step
GO:0000349
description Formation of a catalytic spliceosome complex ready to perform the first splicing reaction. This occurs by an ATP-dependent conformational change of the pre-catalytic spliceosome.

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