1R0O,2HAN,1R0N


Conserved Protein Domain Family
NR_DBD_EcR
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cd07161: NR_DBD_EcR 
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DNA-binding domain of Ecdysone receptor (ECR) family is composed of two C4-type zinc fingers
DNA-binding domain of Ecdysone receptor (EcR) family is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. EcR interacts with highly degenerate pseudo-palindromic response elements, resembling inverted repeats of 5'-AGGTCA-3' separated by 1 bp, upstream of the target gene and modulates the rate of transcriptional initiation. EcR is present only in invertebrates and regulates the expression of a large number of genes during development and reproduction. EcR functions as a heterodimer by partnering with ultraspiracle protein (USP), the ortholog of the vertebrate retinoid X receptor (RXR). The natural ligands of EcR are ecdysteroids, the endogenous steroidal hormones found in invertebrates. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, EcRs have 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).
Links
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Statistics
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PSSM-Id: 143535
Aligned: 7 rows
Threshold Bit Score: 148.486
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:1R0O_B,Zn binding site of Ecdysone Receptor defined by 3.5 A contacts.
    - View structure with Cn3D
  • Comment:Zinc finger, C4-type: The domain contains two groups of four Cys residues. Each group is involved in the co-ordination of a single zinc atom.
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Sequence Alignment
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Format: Row Display: Color Bits: Type Selection: 
Feature 1        #  #             #  #               #     #         #  #                     
1R0O_B      6 EELCLVCGDRASGYHYNALTCEGCKGFFRRSVTKSAVYCCKFGRACEMDMYMRRKCQECRLKKCLAVGMRPECVVPENQC 85  fruit fly
AAB94567  186 EELCLVCGDRASGYHYNALTCEGCKGFFRRSITKNAVYQCKYGNNCDIDMYMRRKCQECRLKKCLSVGMRPECVVPEYQC 265 lone star tick
ABQ28713  191 EELCLVCGDKASGYHYNALTCEGCKGFFRRSVTRKAIYHCKYGESCDIDMYMRRKCQHCRLKKCMEIGMRPERLRADSRV 270 agent of lymphatic...
EEC03371   60 EELCLVCGDRASGYHYNALTCEGCKGFFRRSITKNAVYQCKYGNNCDIDMYMRRKCQECRLKKCLSVGMRPECVVPEYQC 139 black-legged tick
ACJ68423  207 EELCLVCGDRSSGYHYNALTCEGCKGFFRRSITRSNVYHCKYGKHCEMDMYMRRKCQECRFTKCLSIGMKPECVIPESQC 286 Neomysis integer
2HAN_B      8 EELCLVCGDRASGYHYNALTCEGCKGFFRRSVTKSAVYCCKFGRACEMDMYMRRKCQECRLKKCLAVGMRPECVVPENQC 87  fruit fly
1R0N_B      6 EELCLVCGDRASGYHYNALTCEGCKGFFRRSVTKSAVYCCKFGRACEMDMYMRRKCQECRLKKCLAVGMRPECVVPENQC 85  fruit fly

Feature 1                
1R0O_B     86 AMKRREKKAQK 96  fruit fly
AAB94567  266 AIKRESKKHQK 276 lone star tick
ABQ28713  271 PLVVIPEDQCR 281 agent of lymphatic filariasis
EEC03371  140 AIKRESKKHQK 150 black-legged tick
ACJ68423  287 NIKRQQKLQRE 297 Neomysis integer
2HAN_B     88 AMKRREKKAQK 98  fruit fly
1R0N_B     86 AMKRREKKAQK 96  fruit fly

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