OSTEOSARCOMA;
RETINOID;
DNA BINDING;
SEQUENCE;
ORPHAN RECEPTOR;
D O I:
10.1016/0378-1119(94)90080-9
中图分类号:
Q3 [遗传学];
学科分类号:
071007 ;
090102 ;
摘要:
NER, a new member of the steroid hormone nuclear receptor (NR)-encoding gene family, was isolated from a human osteosarcoma SAOS/B10 cell line cDNA library. NER codes for a polypeptide of 461 amino acids which contains the conserved sequences of the DNA-binding and ligand-binding domains of typical steroid hormone NR. It has highest homology with the retinoic acid receptors: 55% at the DNA-binding domain and 38-40% at the ligand-binding domain. A single transcript of 2.3 kb was detected in all cells and tissues tested. Although no ligand was identified for NER-I, its wide distribution may indicate that this novel steroid hormone NR may play a basic role in cell function.