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2.A.88.5.2
Putative niacin uptake transporter, NiaX (niacin ECF transporter S component) Rodionov et al., 2009).

Accession Number:A2RKV5
Protein Name:Niacin transporter NiaX
Length:222
Molecular Weight:24640.00
Species:Lactococcus lactis subsp. cremoris (strain MG1363) [416870]
Number of TMSs:4
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate nicotinic acid

Cross database links:

Entrez Gene ID: 4797508   
KEGG: llm:llmg_1330   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0005215 F:transporter activity

References (2)

[1] “The complete genome sequence of the lactic acid bacterial paradigm Lactococcus lactis subsp. cremoris MG1363.”  Wegmann U.et.al.   17307855
[2] “Quaternary structure and functional unit of energy coupling factor (ECF)-type transporters.”  ter Beek J.et.al.   21135102

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MRNHDCPTVR FFKARVYKEK ETQMTQTKKA KVRNLIIAAM LTALGILIPM MMPVKLIIGP 
61:	ASFTLAAHVP VMAAMFFSPL MTAFVALGTT LGFMISIPVP TIWLRALMHL PVMTVGAYVL 
121:	KKYPEFVHQK VKIQIFNFIL GIFHAGLETL VVYAFYSLGF ANIEQGALLN FLLLIALGGL 
181:	VHSMIDFNLA LGLGNVLSKA FPIDIFDKAK NLVNKKKVKA EI