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feat(structures): add GCE suppressor tRNA cloverleaf structures - #38

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jayhesselberth merged 1 commit into
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worktree-add-gce-suppressor-trnas
Sep 14, 2026
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jayhesselberth merged 1 commit into
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worktree-add-gce-suppressor-trnas

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Summary

  • Add bundled cloverleaf structures for two GCE amber-suppressor tRNAs (Pyl-tRNA, Mj Tyr-tRNA)
  • Fix the R2R pipeline to handle D-stem-less tRNAs

🤖 Generated with Claude Code

https://claude.ai/code/session_01JzBXHA7AoCXcvKmueXxDpH

Adds bundled cloverleaf diagrams for the Methanosarcina pyrrolysyl-tRNA
and M. jannaschii tyrosyl-tRNA amber suppressors used in genetic code
expansion. The pyrrolysyl-tRNA lacks a canonical D-stem (its D-arm is
an unpaired loop), which the R2R layout pipeline didn't support; fixed
find_innermost_acceptor_pair() and create_stockholm() to handle 2-stem
(D-stem-less) junctions alongside the existing 3- and 4-stem cases.
Verified byte-identical regeneration for all 4 existing organisms.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JzBXHA7AoCXcvKmueXxDpH
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jayhesselberth merged commit 5e35b2e into devel Sep 14, 2026
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jayhesselberth deleted the worktree-add-gce-suppressor-trnas branch September 14, 2026 20:30
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