SCOP（Structural Classification of Proteins）是蛋白质结构分类数据库。1995年，由英国剑桥医学研究委员会分子生物学实验室（MRC Laboratory of Molecular Biology）的研究人员创建，主要对已知蛋白质三维结构进行人工分类，描述蛋白质之间的结构和进化关系。该数据库采用层次化分类体系，包括家族、超家族和折叠等不同层次。
CsaA is a protein involved in the post-translational translocation of proteins across the cytoplasmic membrane. It is considered to be a functional homolog of SecB which participates in the Sec-depend
The CRP-family transcription factor NtcA, universally found in cyanobacteria, was initially discovered as a regulator operating N control. It responds to the N regime signaled by the internal 2-oxoglu
All NrdJm sequences from NCBI’s RefSeq database were downloaded from RNRdb (http://rnrdb.pfitmap.org) and clustered with USEARCH (Edgar 2010) at 90% sequence identity to reduce redundancy. Non
