00301nam a2200121Ia 4500008004100000022001400041040001100055100001400066245003300080260004300113300001300156300001000169251112s9999||||xx |||||||||||||| ||und||  a0022-2836  aCNCLSA  aP. Wright 0aJournal of Molecular Biology  c5 July, 1991bAcademic pressaNew York  aP.1-1056  bV.220