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3.A.1.16.4
Nitrate uptake system, NrtABCD (Frías et al., 1997). Molecular interactions within the nitrate uptake system of Anabaena PCC7120 have been reported (but are a bit confusing) (Swapnil et al. 2021).

Accession Number:Q44292
Protein Name:Nitrate transport protein NrtA
Length:440
Molecular Weight:48476.00
Species:Nostoc sp. (strain PCC 7120 / UTEX 2576) [103690]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Peripheral membrane protein2
Substrate

Cross database links:

Entrez Gene ID: 1104204   
KEGG: ana:alr0608   

Gene Ontology

GO:0005886 C:plasma membrane
GO:0042128 P:nitrate assimilation
GO:0006810 P:transport

References (3)

[1] “Nitrate assimilation gene cluster from the heterocyst-forming cyanobacterium Anabaena sp. strain PCC 7120.”  Frias J.E.et.al.   8990301
[2] “Complete genomic sequence of the filamentous nitrogen-fixing cyanobacterium Anabaena sp. strain PCC 7120.”  Kaneko T.et.al.   11759840
[3] “Nitrogen deprivation of Anabaena sp. strain PCC 7120 elicits rapid activation of a gene cluster that is essential for uptake and utilization of nitrate.”  Cai Y.et.al.   8982006

External Searches:

Analyze:

Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MTHVSRRKFL FTTGAAAAAS ILVHGCTSNG SQSATTGEQA PSAAPAANVS AANAPKVETT 
61:	KAKLGFIPLT DAAPLIIAKE KGFFAKYGMT DIEVIKQKSW PVTRDNLKIG SSGGGIDGAH 
121:	ILSPMPYLMT INDKVPMYIL ARLNTNGQAI SVAEKFKELN VNLESKSLKD AAIKAKADKK 
181:	ALKMGITFPG GTHDLWMRYW LAAGGINPDQ DVVLEAVPPP QMVANMKVNT VDGFCVGEPW 
241:	NAQLVNQKIG YSALVTGELW KDHPEKAFSM RQDWIEQNPN AAQAILMAIL EAQQWCDKAE 
301:	NKEEMCKICS DRKYFNVAAA DIIERAKGNI DYGDGRKEQN FAHRMKFWAD NASYPYKSHD 
361:	IWFLTEDIRW GYLPKDTKVQ DIVNQVNKED LWKKAAKAIG VADAEIPASS SRGVETFFDG 
421:	VKFDPEKPEE YLNSLKIKKV