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8.B.15.1.4
Delta-atitoxin of 233 aas and 1 N-terminal TMS followed by 6 short repeat sequences.  It inhibits voltage-gated Na+ channels.  It and other sea urchin peptides can also modulate the functions of the TRPV1 and TRPA1 channels (Kolesova et al. 2023). 

Accession Number:P69929
Protein Name:Delta-actitoxin-Amc1a
Length:233
Molecular Weight:25355.00
Species:Antheopsis maculata (Sea anemone) [280228]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Secreted1
Substrate

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MKRIFIVALL FATCLVNAKP SINDADIKRE PEPNVAVPPC GDCYQQVGNT CVRVPSLCPS 
61:	RKREPEPNVA VPPCGDCYQQ VGNTCVRVPS LCPSRKREPE PNVAVPPCGD CYQQVGNTCV 
121:	RVPSLCPSRK REPEPNVAVP PCGDCYQQVG NTCVRVPSLC PSRKREPEPN VAVPPCGDCY 
181:	QQVGNTCVRV PSLCPSRKRE PEPNVAVPPC GDCYQQVGNT CVRVPSLCPS RKR