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3.D.1.8.2
The photosynthetic/respiratory NAD(P)H-quinone oxidoreductase subunits A - Q and S. NdhP and NdhQ are peptides of 42 and 39 aas, identified by cryoEM at 3.3 Å resolution (Schuller et al. 2019). NDH-1 (NdhA) shuttles electrons from reduced ferridoxin, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory and photosynthetic chains. The immediate electron acceptor for the enzyme in this species is believed to be plastoquinone. The system couples the redox reaction to proton translocation, and thus conserves the redox energy in a proton gradient (Schuller et al. 2019). Ferridoxin directly mediates electron transfer between photosystem I and complex I. Ferridoxin efficiently binds to complex I with subunit NdhS being the key component in this process (Schuller et al. 2019).

Accession Number:Q8DKX9
Protein Name:NADH dehydrogenase subunit 5
Length:656
Molecular Weight:71973.00
Species:Thermosynechococcus elongatus (strain BP-1) [197221]
Number of TMSs:17
Substrate proton

Cross database links:

Structure:
6HUM   6KHI   6KHJ   6L7O   6L7P   6NBQ   6NBX   6NBY     

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MEPLYQYAWL IPVLPLLGAL IVGFGLIAFS ETTSKLRRPS AIFIMALMAI AMGHSLTLFW 
61:	SQVQGHLPYT QMIEWAAAGN LHIAMGYVID PLAALMLVIV TTVAFLVMLY SDGYMAHDPG 
121:	YVRFFAYLSL FGSSMLGLVV SPNLVQVYIF WELVGMCSYL LIGFWYDRKS AAEAAQKAFV 
181:	TNRVGDFGLL LGMVGLFWAT GTFDFAGMGD RLTELVNTGL LSPSLAAILA ILVFLGPVAK 
241:	SAQFPLHVWL PDAMEGPTPI SALIHAATMV AAGVFLIARM FPVFEQLPQV MTTIAWTGAF 
301:	TAFMGATIAI TQNDIKKSLA YSTISQLGYM VMGMGVGAYS AGLFHLMTHA YFKAMLFLGS 
361:	GSVIHSMEGV VGHNPDLAQD MRYMGGLRKY MPITGATFLV GCLAISGVPP FAGFWSKDEI 
421:	LGAVFHANPA MWLLTWLTAG LTAFYMFRMY FMTFEGKFRN VPPERQEHHD HHSHHAAVPH 
481:	ESPWTMTLPL VVLAIPSTLI GFVGTPFNNL FEVFIHAPGE EKVAEHAVDL TEFLILGGSS 
541:	VGIGLMGITV AYLMYLKGTP SPQAIAKAIQ PLYQFSLHKW YFDELYEAVF IKGCRRLARQ 
601:	VLEVDYNVVD GVVNLTGFVT MVTGEGLKYL QNGRAQFYAL IVLLAVLGFV IFSVQT