Table 2.

Statistics of curated representative H-Inv proteins (H-InvDB release 6.2)

Category	Definition	Number of representative HITs	Percentage
I	Identical to knowna human protein (≥98% identity, =100% coverage)	13 314	37.71
II	Similar to knowna protein (≥50% identity, ≥50% coverage)	3380	9.57
III	InterPro domain containing protein	2584	7.32
IV	Conserved hypothetical protein	4584	12.98
V	Hypothetical protein	5203	14.74
VI	Hypothetical short protein (20–79 amino acids)	5446	15.43
VII	Pseudogene candidates	901	2.55
Total		35 303	100.00

^a‘Known’ proteins are experimentally validated proteins in literatures.