SEA-PHAGES | SAM lyase ?

Link to this post \| posted 03 Apr, 2025 19:34
mthomas	There are several putative SAM-degrading enzymes in HollowPurple (e.g., SAM lyase –gp#120 w/ stop codon at 62,755 – evidence is based on HHpred hits; see the entry in PECAAN). If real, these are probably a counter-defense against the bacterial restriction-modification system. (see https://doi.org/10.7554/eLife.61818). There are no SAM-degrading enzymes in other phages in seaphages.org. Thoughts on including this?

Link to this post | posted 03 Apr, 2025 19:34

There are several putative SAM-degrading enzymes in HollowPurple (e.g., SAM lyase –gp#120 w/ stop codon at 62,755 – evidence is based on HHpred hits; see the entry in PECAAN). If real, these are probably a counter-defense against the bacterial restriction-modification system. (see https://doi.org/10.7554/eLife.61818). There are no SAM-degrading enzymes in other phages in seaphages.org. Thoughts on including this?

Link to this post \| posted 04 Apr, 2025 08:51
stpage	mthomas There are several putative SAM-degrading enzymes in HollowPurple (e.g., SAM lyase –gp#120 w/ stop codon at 62,755 – evidence is based on HHpred hits; see the entry in PECAAN). If real, these are probably a counter-defense against the bacterial restriction-modification system. (see https://doi.org/10.7554/eLife.61818). There are no SAM-degrading enzymes in other phages in seaphages.org. Thoughts on including this? Can you post the HHPRED coverage and percent identity? What do you get when you do an amino acid sequence alignment against the SAM lyase from T3?

Link to this post | posted 04 Apr, 2025 08:51

stpage

mthomas
There are several putative SAM-degrading enzymes in HollowPurple (e.g., SAM lyase –gp#120 w/ stop codon at 62,755 – evidence is based on HHpred hits; see the entry in PECAAN). If real, these are probably a counter-defense against the bacterial restriction-modification system. (see https://doi.org/10.7554/eLife.61818). There are no SAM-degrading enzymes in other phages in seaphages.org. Thoughts on including this?

Can you post the HHPRED coverage and percent identity? What do you get when you do an amino acid sequence alignment against the SAM lyase from T3?

Link to this post \| posted 04 Apr, 2025 21:18
mthomas	stpage mthomas There are several putative SAM-degrading enzymes in HollowPurple (e.g., SAM lyase –gp#120 w/ stop codon at 62,755 – evidence is based on HHpred hits; see the entry in PECAAN). If real, these are probably a counter-defense against the bacterial restriction-modification system. (see https://doi.org/10.7554/eLife.61818). There are no SAM-degrading enzymes in other phages in seaphages.org. Thoughts on including this? Can you post the HHPRED coverage and percent identity? What do you get when you do an amino acid sequence alignment against the SAM lyase from T3? The hit is to pdb 6ZM9, coverage=86% and probability=97.6%. There is no alignment similarity vs. T3 SAM lyase. Edited 04 Apr, 2025 21:18

Link to this post | posted 04 Apr, 2025 21:18

mthomas

stpage
mthomas
There are several putative SAM-degrading enzymes in HollowPurple (e.g., SAM lyase –gp#120 w/ stop codon at 62,755 – evidence is based on HHpred hits; see the entry in PECAAN). If real, these are probably a counter-defense against the bacterial restriction-modification system. (see https://doi.org/10.7554/eLife.61818). There are no SAM-degrading enzymes in other phages in seaphages.org. Thoughts on including this?

Can you post the HHPRED coverage and percent identity? What do you get when you do an amino acid sequence alignment against the SAM lyase from T3?

The hit is to pdb 6ZM9, coverage=86% and probability=97.6%. There is no alignment similarity vs. T3 SAM lyase.

Edited 04 Apr, 2025 21:18

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SAM lyase ?