TY - GEN
T1 - Finding Compact Structural Motifs
AU - Qian, Jianbo
AU - Li, Shuai Cheng
AU - Bu, Dongbo
AU - Li, Ming
AU - Xu, Jinbo
PY - 2007/7
Y1 - 2007/7
N2 - Protein structure motif detection is one of the fundamental problems in Structural Bioinformatics. Compared with sequence motifs, structural motifs are more sensitive in detecting the evolutionary relationships among proteins. A variety of algorithms have been proposed to attack this problem. However, they are either heuristic without theoretical performance guarantee, or inefficient for employing an exhaustive search strategy. Here, we study a reasonably restricted version of this problem: the compact structural motif problem. In this paper, we prove that this restricted version is still NP-hard, and we present a polynomial-time approximation scheme to solve it. To the best of our knowledge, this is the first approximation algorithm with a guarantee ratio for the protein structural motif problem.
AB - Protein structure motif detection is one of the fundamental problems in Structural Bioinformatics. Compared with sequence motifs, structural motifs are more sensitive in detecting the evolutionary relationships among proteins. A variety of algorithms have been proposed to attack this problem. However, they are either heuristic without theoretical performance guarantee, or inefficient for employing an exhaustive search strategy. Here, we study a reasonably restricted version of this problem: the compact structural motif problem. In this paper, we prove that this restricted version is still NP-hard, and we present a polynomial-time approximation scheme to solve it. To the best of our knowledge, this is the first approximation algorithm with a guarantee ratio for the protein structural motif problem.
UR - https://www.scopus.com/pages/publications/37849047019
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-37849047019&origin=recordpage
U2 - 10.1007/978-3-540-73437-6_16
DO - 10.1007/978-3-540-73437-6_16
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9783540734369
SN - 3540734368
T3 - Lecture Notes in Computer Science
SP - 142
EP - 149
BT - Combinatorial Pattern Matching
A2 - Ma, Bin
A2 - Zhang, Kaizhong
PB - Springer Verlag
T2 - 18th Annual Symposium on Combinatorial Pattern Matching (CPM 2007)
Y2 - 9 July 2007 through 11 July 2007
ER -