1HCQ


Conserved Protein Domain Family
NR_DBD_ER
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cd07171: NR_DBD_ER 
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DNA-binding domain of estrogen receptors (ER) is composed of two C4-type zinc fingers
DNA-binding domain of estrogen receptors (ER) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which coordinates a single zinc atom. ER interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. Estrogen receptor is a transcription regulator that mediates the biological effects of hormone estrogen. The binding of estrogen to the receptor triggers the dimerization and the binding of the receptor dimer to estrogen response element, which is a palindromic inverted repeat: 5'GGTCAnnnTGACC-3', of target genes. Through ER, estrogen regulates development, reproduction and homeostasis. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, ER has a central well-conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).
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Statistics
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PSSM-Id: 143545
Aligned: 7 rows
Threshold Bit Score: 145.025
Created: 2-Feb-2009
Updated: 2-Oct-2020
Structure
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Program:
Drawing:
Aligned Rows:
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Conserved site includes 8 residues -Click on image for an interactive view with Cn3D
Feature 1:zinc binding site [ion binding site]
Evidence:
  • Structure:1HCQ_A; Zn binding site of human Estrogen Receptor Dna-Binding Domain, contacts determined at 4A
  • Comment:Zn finger, C4-type: The domain contains two groups of four Cys residues. Each group is involved in the coordination of a single zinc atom.
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Sequence Alignment
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Format: Row Display: Color Bits: Type Selection: 
Feature 1          #  #             #  #                #     #         #  #                  
1HCQ_A      2 KETRYCAVCNDYASGYHYGVWSCEGCKAFFKRSIQG-HNDYMCPATNQCTIDKNRRKSCQACRLRKCYEVGMMKGGIRKD 80  human
P81559    175 KETRYCAVCSDYASGYHYGVWSCEGCKAFFKRSIQG-HNDYMCPATNQCTIDKNRRKSCQACRLRKCYEVGMMKGGIRKD 253 African clawed frog
P57781    177 ADMHFCAVCHDYASGYHYGVWSCEGCKAFFKRSIQG-HNDYICPATNQCTIDKNRRKSCQACRLRKCYEVGMMKCGVRRE 255 Atlantic croaker
O93511    100 RDAHFCAVCSDYASGYHYGVWSCEGCKAFFKRSIQG-HNDYICPATNQCTIDKNRRKSCQACRLRKCYEVGMMKCGSRRE 178 Japanese quail
BAF45381  128 GPNKLCQVCSDNASGFHYGVWSCEGCKAFFKRSIQG-PVDYVCPATNTCTIDKHRRKSCQACRLRKCYEVGMNKGSQRKE 206 Pacific oyster
ACF16007  292 KARAVCRVCGDHASGFHYGVWSCEGCKAFFKRSIQQgQTDYICPGTNQCTIDRNRRKSCQACRYRKCLMVGMTKDGRRSG 371 Florida lancelet
ACC94156   47 KDVQKCQICSDLASGFHYGVWSCEGCKAFFKRSLQD-PVDYVCPATNNCTIDKHRRKSCQACRFRKCLEVGMMKRRERRT 125 Dumeril's clam worm

Feature 1        
1HCQ_A     81 RRG 83  human
P81559    254 RRG 256 African clawed frog
P57781    256 RCS 258 Atlantic croaker
O93511    179 RCG 181 Japanese quail
BAF45381  207 RKG 209 Pacific oyster
ACF16007  372 ERR 374 Florida lancelet
ACC94156  126 TKK 128 Dumeril's clam worm

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