Table 1. Main features of NMCP proteins and lamins. Similar characteristics are denoted in blue and different ones in red.

	NMCPs	lamins
Types	NMCP1 (monocots 1; dicots 2­‒3 genes) NMCP2 (1 gene)	B-type (invertebrates 1; vertebrates 2­‒3 genes) A-type (1 gene in vertebrates and in few invertebrates)
Structure	Central coiled-coil rod domain, head and tail Rod domain flanked by cdk1 sites NLS in the tail domain	Central coiled-coil rod domain, head and tail Rod domain flanked by cdk1 sites NLS in the tail domain
Conserved regions	Extremes of the rod domain, linkers and C-terminus	Extremes of the rod domain, linkers and C-terminus
Polimerization state	Predicted to dimerize	Dimerize and form filaments
MW	Variable (70-200 kDa)	65-74 kDa
pI	Acidic	Acidic (B-type lamins); neutral (A-type)
Solubility	NSK component	NSK component
Subcellular localization	Lamina, nucleoplasm	Lamina, nucleoplasm
Functions	Nuclear shape and size Chromatin organization (?) (decreased number of chromocenters but the distribution of heterochromatic regions not changed) Not involved in light induced nuclear movement	Nuclear shape and architecture Chromatin organization and positioning Connecting NSK and CSK DNA replication, repair and transcription Cell proliferation and differentiation
Genes	Min. 2 in most plants	Min. 3 in vertebrates, 1 in most invertebrates
Where?	Multicellular land plants	Metazoan