[Cloning and bio-informatics analysis of the CsCrSP from Clonorchis sinensis].
OBJECTIVE
To screen cDNA library from Clonorchis sinensis for gene identification, and to clone and construct library of secreted recombinant proteins.


METHODS
cDNA library from Clonorchis sinensis was screened for identifying new genes by Blastn protocol, the sequence of which was further analyzed by Motifscan and NCBI Conserved Domain Search protocol.


RESULTS
The secreted proteins (Pcs004f03) were identified, with a 689 bp DNA sequence (187aa), and a theoretical molecular weight of Mr 21100. It is predicted that the gene CsCrSP contains one N-glycosylation site, three N-myristoylation sites, three casein kinase II phosphorylation sites, one cAMP-and cGMP-dependent protein kinase phosphorylation site and protein kinase C phosphorylation site, a signal peptide at N-terminals and SCP-like extracellular protein domain.


CONCLUSIONS
The CsCrSP gene is a secretory cysteine-rich protein with a SCP-like extracellular protein domain.
Chen
Shou-yi
SY
School of Preclinical Medicine, Sun Yat-sen University, Guangzhou 510089, China. csy0077@sina.com.cn
Li
Jun-tao
JT
Xu
Jin
J
Wei
Quan-de
QD
Xie
Hong-yan
HY
Hu
Xu-chu
XC
Yu
Xin-bing
XB
D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D003004:Clonorchis sinensis / Q000235:genetics*; D018076:DNA, Complementary / Q000235:genetics*; D004274:DNA, Recombinant; D015723:Gene Library; D015801:Helminth Proteins / Q000235:genetics*; D008969:Molecular Sequence Data
D018076:DNA, Complementary; D004274:DNA, Recombinant; D015801:Helminth Proteins