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3.A.1.23.7
Ni2+, Co2+ uptake transporter, NikMNOQ (subunit sizes: NikMN, 347 aas, 9 TMSs; NikQ, 284 aas, 4 TMSs; NikO, 254 aas, 0 TMS.  NikMN can take up Ni2+ without NikQ or NikO (Kirsch and Eitinger 2014).

Accession Number:D5AQY6
Protein Name:Nickel import ATP-binding protein NikO
Length:254
Molecular Weight:27039.00
Species:Rhodobacter capsulatus (strain ATCC BAA-309 / NBRC 16581 / SB1003) [272942]
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Peripheral membrane protein2
Substrate cobalt(2+), nickel(2+)

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MTPAFELQGV QFAYKGVPAL NGLDLTLPLG RRTALLGANG SGKSTLLRLL DGLQFPAAGR 
61:	ISAFGTPLTE AMFTDEAAAI AFRRRVGFVF QNPEVQLFCP SVFDELAFGP LQLHWPKERI 
121:	RARVARAIAQ FGLGPLAGRP PHRLSGGEKK RVALASVLIL DPEVLLLDEP TAALDPQATD 
181:	DIAALLETEF GARNPGRTLI FSSHDLDLVA RIADHVVVLE AGKVAAAGPA AEVLARTALL 
241:	RRARLLPGFD GTAP