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3.A.1.27.2
The chloroplast lipid (trigalactosyl diacyl glycerol (TDG)) transporter, Tdg1,2,3 (Lu et al., 2007). Lipids such as mono- and digalactolipids are synthesized in the endoplasmic reticulum (ER) of plant cells and transferred to the thylakoid membranes of chloroplasts. Mutations in an outer chloroplastic envelope protein with 350 aas and 7 putative TMSs in the last 250 residues may catalyze translocation as part of a lipid transfer complex (Xu et al., 2003; Roston et al. 2012).

Accession Number:Q9LTR2
Protein Name:Protein TRIGALACTOSYLDIACYLGLYCEROL 2, chloroplastic
Length:381
Molecular Weight:41630.00
Species: [3702]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Plastid1 / Single-pass membrane protein2
Substrate Trigalactosyl diacyl glycerol

Cross database links:

RefSeq: NP_566659.1    NP_974345.1   
Entrez Gene ID: 821576   
Pfam: PF02470   
KEGG: ath:AT3G20320   

Gene Ontology

GO:0009706 C:chloroplast inner membrane
GO:0016021 C:integral to membrane
GO:0005319 F:lipid transporter activity
GO:0005543 F:phospholipid binding

References (7)

[1] “Structural analysis of Arabidopsis thaliana chromosome 3. I. Sequence features of the regions of 4,504,864 bp covered by sixty P1 and TAC clones.”  Sato S.et.al.   10819329
[2] “Empirical analysis of transcriptional activity in the Arabidopsis genome.”  Yamada K.et.al.   14593172
[3] “Integral membrane proteins of the chloroplast envelope: identification and subcellular localization of new transporters.”  Ferro M.et.al.   12177442
[4] “Proteomic study of the Arabidopsis thaliana chloroplastic envelope membrane utilizing alternatives to traditional two-dimensional electrophoresis.”  Froehlich J.E.et.al.   12938931
[5] “Proteomics of the chloroplast envelope membranes from Arabidopsis thaliana.”  Ferro M.et.al.   12766230
[6] “Sorting signals, N-terminal modifications and abundance of the chloroplast proteome.”  Zybailov B.et.al.   18431481
[7] “Plant ABC proteins - a unified nomenclature and updated inventory.”  Verrier P.J.et.al.   18299247

External Searches:

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MIGNPVIQVP SSLMPSSSMI ACPRVSPNGV PYLPPKPRTR HLVVRAASNS DAAHGQPSSD 
61:	GGKNPLTVVL DVPRNIWRQT LKPLSDFGFG KRSIWEGGVG LFIVSGATLL ALSWAWLRGF 
121:	QMRSKFRKYQ TVFELSHASG ICTGTPVRIR GVTVGTIIRV NPSLKNIEAV AEIEDDKIII 
181:	PRNSLVEVNQ SGLLMETMID IMPRNPIPEP SVGPLHPECG KEGLIVCDRQ TIKGVQGVSL 
241:	DELVGIFTRI GREVEAIGVA NTYSLAERAA SVIEEARPLL KKIQAMAEDA QPLLSEFRDS 
301:	GLLKEVECLT RSLTQASDDL RKVNSSIMTP ENTELIQKSI YTLVYTLKNV ESISSDILGF 
361:	TGDEATRKNL KLLIKSLSRL L