TY - JOUR
T1 - Translational machinery of channel catfish
T2 - II. Complementary DNA and expression of the complete set of 47 60S ribosomal proteins
AU - Patterson, Andrea
AU - Karsi, Attila
AU - Feng, Jinian
AU - Liu, Zhanjiang
N1 - Funding Information:
This project was supported by a grant to Z.L. from USDA NRICGP Animal Genome Basic Reagents and Tools program (USDA/NRICGP 2003-35205-12827). We appreciate the support of Auburn University Department of Fisheries and Allied Aquacultures, College of Agriculture, and the Vice President for Research for their matching funds to USDA NRI Equipment Grants (98-35208-6540, 99-35208-8512).
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/2/27
Y1 - 2003/2/27
N2 - Ribosomal protein genes have become widely used as markers for phylogenetic studies and comparative genomics, but they have not been available in fish. We have cloned and sequenced a complete set of all 47 60S ribosomal protein cDNAs from channel catfish (Ictalurus punctatus), of which 43 included the complete protein encoding regions. Most ribosomal protein mRNAs in channel catfish are highly similar to their mammalian counterparts. However, L4, L14, and L29 are significantly shorter in channel catfish than in mammals due to deletions in the 3′ end of the gene. Two distantly related L5 cDNAs, L5a and L5b, were found in channel catfish. L5a is more similar to L5 in other vertebrates, while L5b showed significant levels of divergence, suggesting independent evolution of the two L5-encoding genes. The 47 ribosomal protein genes are generally highly expressed and together account for 11-14% of overall gene expression, depending on the tissues. Expression levels were highly variable both within a single tissue among different ribosomal protein genes, and among tissues with regard to a single ribosomal protein gene. Strong tissue preference expression was also observed for some ribosomal proteins. This set of ribosomal protein gene sequences represents one of the most complete sets from any single organism and will aid in fish phylogenetic and comparative genomic studies.
AB - Ribosomal protein genes have become widely used as markers for phylogenetic studies and comparative genomics, but they have not been available in fish. We have cloned and sequenced a complete set of all 47 60S ribosomal protein cDNAs from channel catfish (Ictalurus punctatus), of which 43 included the complete protein encoding regions. Most ribosomal protein mRNAs in channel catfish are highly similar to their mammalian counterparts. However, L4, L14, and L29 are significantly shorter in channel catfish than in mammals due to deletions in the 3′ end of the gene. Two distantly related L5 cDNAs, L5a and L5b, were found in channel catfish. L5a is more similar to L5 in other vertebrates, while L5b showed significant levels of divergence, suggesting independent evolution of the two L5-encoding genes. The 47 ribosomal protein genes are generally highly expressed and together account for 11-14% of overall gene expression, depending on the tissues. Expression levels were highly variable both within a single tissue among different ribosomal protein genes, and among tissues with regard to a single ribosomal protein gene. Strong tissue preference expression was also observed for some ribosomal proteins. This set of ribosomal protein gene sequences represents one of the most complete sets from any single organism and will aid in fish phylogenetic and comparative genomic studies.
KW - Alternative polyadenylation
KW - Catfish
KW - Expression
KW - Fish
KW - Genomics
KW - Phylogeny
KW - Ribosomal protein
UR - http://www.scopus.com/inward/record.url?scp=0037468532&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037468532&partnerID=8YFLogxK
U2 - 10.1016/S0378-1119(02)01183-6
DO - 10.1016/S0378-1119(02)01183-6
M3 - Article
C2 - 12609735
AN - SCOPUS:0037468532
SN - 0378-1119
VL - 305
SP - 151
EP - 160
JO - Gene
JF - Gene
IS - 2
ER -