Institute of Cytology and Genetics, Pr. Lavrentieva 10, Novosibirsk, 630090 and Engelhardt Institute of Molecular Biology, Moscow, 117984, Russia. AK@bionet.nsc.ru|Institute of Cytology and Genetics, Pr. Lavrentieva 10, Novosibirsk, 630090 and Engelhardt Institute of Molecular Biology, Moscow, 117984, Russia. AK@bionet.nsc.ru|Institute of Cytology and Genetics, Pr. Lavrentieva 10, Novosibirsk, 630090 and Engelhardt Institute of Molecular Biology, Moscow, 117984, Russia. AK@bionet.nsc.ru|Institute of Cytology and Genetics, Pr. Lavrentieva 10, Novosibirsk, 630090 and Engelhardt Institute of Molecular Biology, Moscow, 117984, Russia. AK@bionet.nsc.ru|Institute of Cytology and Genetics, Pr. Lavrentieva 10, Novosibirsk, 630090 and Engelhardt Institute of Molecular Biology, Moscow, 117984, Russia. AK@bionet.nsc.ru