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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:Q9LKU2
Protein Name:Tha4
Length:147
Molecular Weight:15713.00
Species:Arabidopsis thaliana (Mouse-ear cress) [3702]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate protein polypeptide chain

Cross database links:

RefSeq: NP_198227.1   
Entrez Gene ID: 832987   
Pfam: PF02416   
KEGG: ath:AT5G28750   

Gene Ontology

GO:0009941 C:chloroplast envelope
GO:0009535 C:chloroplast thylakoid membrane
GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0008565 F:protein transporter activity
GO:0009306 P:protein secretion

References (1)

[1] “Sequence and analysis of chromosome 5 of the plant Arabidopsis thaliana.”  Tabata S.et.al.   11130714

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence 
1:	MATSVATLSS PPPVSLPLLS SSRSSFFSNC FTVTTRPNTR SLVAIGRRIR QEPTRKPLTC 
61:	NALFGLGVPE LAVIAGVAAL LFGPKKLPEI GKSIGKTVKS FQQAAKEFES ELKTEPEESV 
121:	AESSQVATSN KEEEKKTEVS SSSKENV