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3.A.1.12.16
Glycine betaine/carnitine/choline/proline transporter, OpuABC. It is not a dominant proline transporter which in S. aureus are, however, PutP and ProT (Lehman et al. 2023). The sequence of OpuB, the membrane component of the system, is not included here. The 3-d structure of OpuC (or a part of it) has been solved (5IIP_A-D). .

Accession Number:5IIP_A
Protein Name:A Chain A, Glycine betaine/carnitine/choline ABC transporter%2C ATP-binding protein%2C putative
Length:195
Molecular Weight:
Species:Staphylococcus aureus [1280]
Substrate choline, glycine betaine, L-proline, carnitinium

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	GSSHHHHHHS SGLVPRGSHM ASGQNRLIQD RPNDKTVEGV MIKPITIQAE ATLNDAVHIM 
61:	RQKRVDTIFV VDSNNHLLGF LDIEDINQGI RGHKSLRDTM QQHIYTVQID SKLQDSVRTI 
121:	LKRNVRNVPV VDDQQRLVGL ITRANVVDIV YDTIWGDSED TVQTEHVGED TASSKVHEQH 
181:	TTNVKVRDIG DDKS