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mengsk: ½ð±Ò+2, ¡ï¡ï¡ïºÜÓаïÖú 2013-10-22 16:17:07
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Form A :right handed double helix
Most RNA present in this form
Major conformation of RNA
the most favorable conformation at low concentration of water
Bases are displaced away from the axis
Major groove is narrow while minor groove is wide
Over all shape short and wide

Form B : Right handed double helix
the most common type of DNA
Major conformation of DNA
the most favorable conformation at high concentration of water
Bases are perpendicular to the axis
Major groove is wide while minor groove is narrow
Over all shape is long and narrow

Form z : Left handed double helix
Zigzag form
Minor conformation of DNA
the most favorable conformation at high concentration of salt
Bases are perpendicular to the axis
Both major and minor groove are narrow
Over all shape is elongate and narrow
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