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2.A.64.2.1
The chloroplast Tat translocase (cpTatC/Hcf106/Tha4) (Gérard and Cline, 2007).  The precursor mature domain of the substrate protein interacts directly with Tha4 (Pal et al. 2012).  Hcf106 is predicted to contain a single amino terminal transmembrane domain followed by a Pro-Gly hinge, a predicted amphipathic alpha-helix (APH), and a loosely structured carboxy terminus.  The amphipathic α-helix interacts with the bilayer (Zhang et al., 2013a; Zhang et al. 2013b).  TatA has structural plasticity and a capability to adapt to local environments (Pettersson et al. 2018).

Accession Number:Q9SJV5
Protein Name:cpTatC
Length:340
Molecular Weight:37367.00
Species:Arabidopsis thaliana (Mouse-ear cress) [3702]
Number of TMSs:6
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate protein polypeptide chain

Cross database links:

RefSeq: NP_565252.1   
Entrez Gene ID: 814640   
Pfam: PF00902   
KEGG: ath:AT2G01110   

Gene Ontology

GO:0009535 C:chloroplast thylakoid membrane
GO:0031361 C:integral to thylakoid membrane
GO:0043235 C:receptor complex
GO:0009567 P:double fertilization forming a zygote and e...
GO:0010027 P:thylakoid membrane organization

References (3)

[1] “Sequence and analysis of chromosome 2 of the plant Arabidopsis thaliana.”  Lin X.et.al.   10617197
[2] “Full-length messenger RNA sequences greatly improve genome annotation.”  Haas B.J.et.al.   12093376
[3] “An essential role of a TatC homologue of a Delta pH- dependent protein transporter in thylakoid membrane formation during chloroplast development in Arabidopsis thaliana.”  Motohashi R.et.al.   11526245

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MSSTSTSSAL IHHFRLTTRN LGSPTKQRCP YAVTFCNSWR EAGLRYSVTQ RRSKGFGPVS 
61:	ALNDDDSPTE TTPGVGSAVE DRPPDSSEDR SSSVYEFLYP RKEELPDDKE MTIFDHLEEL 
121:	RERIFVSVLA VGAAILGCFA FSKDLIVFLE APVKTQGVRF LQLAPGEFFF TTLKVSGYCG 
181:	LLLGSPVILY EIIAFVLPGL TRAERRFLGP IVFGSSLLFY AGLAFSYWVL TPAALNFFVN 
241:	YAEGVVESLW SIDQYFEFVL VLMFSTGLSF QVPVIQLLLG QVGVVSGDQM LSIWRYVVVG 
301:	AVVAAAVVTP STDPVTQMLL ATPLLGLYLG GAWMVKLTGR