5. c.40.1 Methylesterase CheB, C-terminal domain Methylesterase CheB, C-terminal domain 3 layers: a/b/a, parallel beta-sheet of 7 strands, order 3421567 1a2o d1a2ob2 B:223-228,232-240,241-249,259-272 1a2o d1a2oa2 A:223-228,232-240,241-249,259-272