Structural Difficulty (SD) Index
A Measure for Reliable Modelability of Protein Tertiary Structures


SD Index distribution of human proteome at different clustering levels

Sr. No.Clustering LevelModelable ZoneDifficult ZoneVery Difficult ZoneTotal ProteinsDownload
1.100% Identity1918915768913044087Download (~1.0 MB)
2.90% Identity1326611760717932205Download (~754 KB)
3.80% Identity1230211130680230234Download (~708 KB)
4.70% Identity1164710719657728943Download (~678 KB)
5.60% Identity1103010334634727711Download (~649 KB)
6.50% Identity103539903608626342Download (~617 KB)


SD Index distribution of UniProtKB soluble sequences

Sr. No.Clustering LevelModelable ZoneDifficult ZoneVery Difficult ZoneTotal ProteinsDownload
1.100% identity2208997882644936344661Download (~4.3 MB)