Structure and expression of the maize (Zea maysL.) SUN-domain protein gene family: evidence for the existence of two divergent classes of SUN proteins in plants

Table 2 Properties and motifs of maize SUN-domain protiens.

^aProtein ORFs used were predicted from the sequences listed under cDNA from Table 1. Properties were calculated by means of the online ProtParam software, http://us.expasy.org/tools/protparam.html[80].
^bTotal number of amino acids in the predicted ORF.
^cpI, predicted isoelectric point.
^dTotal number of cysteine residues.
^eMotifs and domains are indicated by the first and last amino acid; the amino acid numbers for the ORFs are those from the sequences listed under cDNA from Table 1.
^fTM, locations of transmembrane regions predicted by the online software www.ch.embnet.org/software/TMPRED_form.html[70]. The multiple TMs of the PM3 proteins are named TM1, TM2, and TM3 according to the order of their occurrence starting from the N-terminus.
^gSUN, Sad1_UNC superfamily (pfam07738) domain locations and significance values are from alignments to the Conserved Domain Database (CDD version 2.21, NCBI), http://www.ncbi.nlm.nih.gov/Structure/cdd/cdd.shtml[81].
^hCC, coiled-coil motifs are predicted from the online COILS software http://www.ch.embnet.org/software/COILS_form.html[69]. The two CCs in SUN5 are called CC1 and CC2 according to the order of their occurrence starting from the N-terminus.
ⁱPAD, PM3-associated domain of unknown function defined here by multiple sequence alignments.

ISSN: 1471-2229