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2000). In contrast, mitochondrial proteins without homology to proteins in ��-proteobacteria were defined as E-type. We found 99 proteins with SCOP/Pfam domains unique to eukaryotes and defined these proteins as E-type. Some examples of E-type proteins are CPT2_HUMAN (UniProt Accession Number: P23786), DBLOH_HUMAN (Q9NR28), KCRS_HUMAN (P17540), LETM1_HUMAN (O95202), MPCP_HUMAN (Q00325), PTH2_HUMAN (Q9Y3E5), STAR_HUMAN (P49675), and TFAM_HUMAN (Q00059). Fukuchi et?al. (2011) previously conducted a DICHOT analysis of all human proteins to classify the protein molecules into KDs, CDs, and ID regions; these results were compiled in the DICHOT database (http://spock.genes.nig.ac.jp/~genome/DICHOT/). http://www.selleck.cn/products/Staurosporine.html http://www.selleckchem.com/products/epz-5676.html Although DICHOT analysis is merely a computational prediction method based on sequence information, it fully uses experimentally determined 3D structural information, that is, PDB/SCOP, to preferentially assign KDs. It then classifies the remaining regions as either ID regions or CDs, which results in remarkably high prediction accuracy on a residue-by-residue basis (Fukuchi et?al. 2011). Here, we mainly focused on ID regions of the proteins, while regarding the remaining parts as SDs by combining KDs and CDs (including those regions predicted as globular domains of unknown structure). Using the prediction data of 706 human mitochondrial proteins from the DICHOT database, we obtained an average ID ratio of 14.2% on a per-residue basis (Table?1). For proteins having a transfer signal sequence, the ID ratio was calculated for the mature protein, excluding the signal sequences. The average ID ratios for B-type and E-type proteins were 10.3% and 21.4%, respectively (Table?1); therefore, this result agrees with the general trend of B-type http://www.selleckchem.com/products/ly2109761.html Rickettsia typhi were obtained, which were nearly identical to the above-mentioned average ID ratio for B-type proteins (i.e., 10.3%). 3: Intermembrane space The average ID ratio values are shown in Fig.?1, as is the size distribution of the ID regions [the percentage of IDPs that contain consecutive ID regions longer than n amino acids are plotted at n?=?30, 40, ��, 130 etc. (Iakoucheva et?al. 2002)]. Figure?1 clearly shows that ID ratios for E-type proteins are statistically significantly higher than those for B-type proteins (P?