3VA9


Conserved Protein Domain Family
HK9-like_sensor
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cd19410: HK9-like_sensor 
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ligand binding sensor domain of Rhodopseudomonas palustris histidine kinase HK9 and similar proteins
The ligand binding sensor domain of Rhodopseudomonas palustris histidine kinase HK9 and similar proteins forms a homodimer and binds to an as yet uncharacterized ligand, most likely via the dimerization interface, a feature that appears to be conserved in this domain superfamily. This domain is similar to the extracellular sensory domain CHASE3, specifically found in histidine kinases, adenylate cyclases, methyl-accepting chemotaxis proteins and predicted diguanylate cyclases/phosphodiesterases. Environmental factors that are recognized by CHASE3 domains are not known at this time.
Links
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Statistics
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PSSM-Id: 438628
Aligned: 765 rows
Threshold Bit Score: 69.1592
Created: 17-Jul-2018
Updated: 17-Oct-2022
Structure
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Program:
Drawing:
Aligned Rows:
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homodimer
Conserved site includes 15 residues -Click on image for an interactive view with Cn3D
Feature 1:homodimer interface [polypeptide binding site]
Evidence:
  • Comment:by similarity to other members of this superfamily
  • Citation:PMID 8345523
Scroll to Sequence Alignment Display
Sequence Alignment
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Format: Row Display: Color Bits: Type Selection: 
Feature 1         #  #         ##  ## ##  ##                                                      
3VA9_A         15 QQTNKALLAISAIQQAVLEAETSERGFLLtg-ieTYRDSYIRARDALAARLDGLRAVlad--npEQIAHIDELRLLTDMR 91   Rhodopseudomo...
RYD57502       54 MHTMEVMLVAEQLRSAANETLRGERGYLItg-dpQFLQPYRDGRRMAVQHIAELRELtqd--npAQRGSIAALEPQVKRF 130  Sphingomonada...
WP_058451819   43 FHTHKTIETAEKMMINVNTLENMQRDYLItg-nkNRLDGYNALIQQIQQNVKEFTALtad--npLQQNRISNFSQLFEEY 119  Legionella ma...
WP_114969618   43 VHTYQVRGDLEAVASGMREQESGQRAYIItg-keFFLAEREREAGRIRSALTRIGQLtvd--npRQQLRSAALSQLADAR 119  Rhodoferax sp...
WP_144335358   57 LHTYRVMLTAERLQSSLFDAQRSMRGALItn-dsAYLPVYSAAVGRVPGLTAQLRRMtrd--npRQQRRIDWLDALIKTQ 133  Sandarakinorh...
WP_109016543   47 SHTHQVLAQLETLLVDVVDIETGTRGYLIvg-rpEYLDPYNRSLQKLDLDVRTLMNLtad--npRQVENIRALLPHIAQK 123  Novimethyloph...
RTL42708       42 SHTLVVLDEAAESLVCLMDCETAYRGYLItg-seQYLAPYEKCFGEVESHIEKISALtvd--npREQALIPELRKLASEK 118  Candidatus Me...
OGS98569       42 MQTQEALVTLEEIYSLVSQAESGQRAYLItsdesYYLQPRHAAVSRVWKLVARLKQIsag--dpDRQQQLQKIEQRLAAR 119  Gallionellale...
TLU51867       39 SHTLKTINSLEHLLVHLTELEISERGYVItg-deHYLEPYFFELSPDGIQQQLIDLRqsgaddqVLQSSLTSLVPLVEKK 117  Chlorobium sp.
WP_091452035   52 VHSYQVLDALGEVVSGVREIESRQRSYIItg-dpRYVAQRAREAEAVRAVLARLERLtad--npAQGMRSSQIAQLTESR 128  Giesbergeria ...

Feature 1                                   ## #  #  #                
3VA9_A         92 MAQLGRVVELgpe-----rmrEALDILEQARvDRLTERIETSLSVLTRAEQA 138  Rhodopseudomonas palustris CGA009
RYD57502      131 VDVLDRSVDLmqqg----kgdEAVAIVKGGSgRREIAALLDIISRIESEERR 178  Sphingomonadales bacterium
WP_058451819  120 VKLLNQSIQArkqn----gmqAGIAIVATDNvKWMTNQLTQHTSQIIDEERK 167  Legionella maceachernii
WP_114969618  120 FQLLDKSLAEyrae----gfeKARERMQTGVsHASMEALVKQIDAMDEEERT 167  Rhodoferax sp. OTU1
WP_144335358  134 LDRMRTNEASvrsg----eitPLIAAVRSGVgEVNISQIRTAIAAIVEEERQ 181  Sandarakinorhabdus sp. LB1R16
WP_109016543  124 INKSQYLINMrqdq----gfnEAQAMMTQMQ-GVEMLEIRRRIGDLMAEEQR 170  Novimethylophilus kurashikiensis
RTL42708      119 IKFSQQVIEArkkdqqrdswkPGKTLINIDTgKDLMDRYRTLIGKIQSEETR 170  Candidatus Melainabacteria bacterium
OGS98569      120 LDILDRVLRLrqth----gldAARQQLLAGAgRAEMEQLRDIVTLAESEERK 167  Gallionellales bacterium RBG_16_56_9
TLU51867      118 ILLMQQVINLrvar----gfdAAKASLTSNIgNEGMKTIRTLIDSMKQRETR 165  Chlorobium sp.
WP_091452035  129 LQLLDNNVAVfqaq----gfeAARDLIRSGVsERTMQALLKEINLLTAAEHS 176  Giesbergeria anulus

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