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9.B.14.1.21
CcmA/CcmD proteins, probably involved in cytochorme c matureation (heme insertion). CcmA iis of 353 aas with 9 TMSs, while CcmD is of 240 aas with 6 TMSs.  They may function with CcmB (see TC# 3.A.1.107.5 (Gupta et al. 2022).

Accession Number:AAM04843.1
Protein Name:AAM04843.1 heme exporter protein C [Methanosarcina acetivorans C2A]
Length:241
Molecular Weight:
Species:Methanosarcina acetivorans C2A [188937]
Number of TMSs:6
Substrate cytochrome c, ferroheme b

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MNKMASNSRK TGVLAVATAG VMLLATYMIF FYLSPIKDEA GEVLSGSFRI FFFHMPIAII 
61:	SYLAFAVVFA ASILYLRDKA LKWDIYARSA AEVGTLFAFL VLITGSIWAK DAWGWYWIWD 
121:	IRLTTSLVLF LVYLAYMMLR KALEEPGKRA RLAAVFGILG FMSVPLSFFS IRLWRSAHPL 
181:	MFGGNTGGSG GGLEGTSLQL TLFVNFIAYF LLFLTLFSIK VQNEKMGEEL DARRSAGSEA