Stable synthetic phytase variants

A synthetic phytase which is a shuffling product comprising biobricks of at least two reference phytases of Obesumbacterium and/or Hafnia

• which phytase comprises one of
• a) an amino acid sequence according to SEQ ID NO 3 (“shuffled sequence”)
• b) the amino acid sequence according to option a), with the proviso that the sequence has at least 1 amino acid substitutions relative to SEQ ID NO 3 as specified in a), while maintaining its phytase activity,
• c) the amino acid sequence according to option a), with the proviso that the sequence has a sequence identity of ≥90% relative to SEQ ID NO 3 as specified in a), while maintaining its phytase activity.