Recent Posts

1

Feature requests / Re: where are the torsion angles?

« Last post by xiangjun on Yesterday at 10:25:56 pm »

Hi,

Thank you for your question. DSSR calculates a wide range of structural features, including backbone torsion angles. To keep the initial release of the wDSSR web server streamlined and accessible, some of these detailed parameters were intentionally omitted from the default display. In the meantime, you can obtain complete torsion angle profiles using the DSSR command-line tool, as detailed in the DSSR User Manual.

We can update wDSSR to make this data available on the web interface. Would you prefer to have the torsion angles included in a downloadable JSON output file, or displayed explicitly in a new section on the results page?

Best regards,

Xiang-Jun

2

Feature requests / where are the torsion angles?

« Last post by annawacker on Yesterday at 10:10:02 am »

I am missing the torsion angle analysis on the new web3DNA server. why is it gone?

3

FAQs / Re: Where to download x3DNA

« Last post by xiangjun on May 11, 2026, 05:09:54 pm »

Hi,

Thank you for joining the 3DNA/DSSR community. For security, initial posts from non-EDU addresses require a one-time approval. This has been completed, and your download link is now active.

Best regards,

Xiang-Jun

4

FAQs / Re: Where to download x3DNA

« Last post by layne on May 11, 2026, 04:51:28 pm »

Hi,

I also got the confirmation email and successfully logged in this forum, but I cannt find the download page. Could you help me check it?

Thank you!

5

FAQs / Re: Where to download x3DNA

« Last post by amtblcd on May 05, 2026, 02:42:48 am »

Hi Xiang-Jun,

 Got it, thanks.

Best regards,
Changdong

6

FAQs / Re: Where to download x3DNA

« Last post by xiangjun on April 27, 2026, 10:24:39 am »

Hi Changdong,

Thank you for the follow-up.

I would like to clarify that the licensing for DSSR is managed by Columbia Technology Ventures (CTVs). While DSSR has a large global community with hundreds of academic users, licenses are generally not issued to institutions in certain countries due to institutional compliance and administrative policies. Unfortunately, this means that even if an academic request is submitted, it may be restricted based on the location of the host institution.

However, you can still access DSSR through the following options:

• DSSR v1.9.10-2020apr23: This version is available for download directly from the 3DNA Forum. It corresponds to the paper "DSSR-enabled innovative schematics of 3D nucleic acid structures with PyMOL" (2020) published in Nucleic Acids Research.
• wDSSR: You can use the recently released web interface for DSSR at https://web.x3dna-dssr.org/.
  

I appreciate your interest in the software and your understanding of these constraints.

Best regards,

Xiang-Jun

7

FAQs / Re: Where to download x3DNA

« Last post by amtblcd on April 27, 2026, 12:48:41 am »

Hi Xiang-Jun,

Thanks for your reply. Understood — I’ll follow up there and avoid duplicate posts.

I also wanted to note that I’m still unable to download DSSR v2.8.1-2026mar12, even though I submitted an academic account request for a free seat.

Best regards,
Changdong

8

Bug reports / Re: Missing DNA bases with negative residue number

« Last post by shuxiang on April 25, 2026, 10:20:30 pm »

Hi Mihir,

The problem has been fixed. Please have a try and let us know if you have any questions.

Best,
Shuxiang

9

FAQs / Re: Where to download x3DNA

« Last post by xiangjun on April 24, 2026, 07:22:52 am »

Hi Changdong,

Thanks for your interest in 3DNA/DSSR. Your question has been addressed in another thread: License requested.

Please don’t hesitate to ask questions on the forum, but kindly avoid posting the same query in multiple threads to keep the discussion organized.

Best regards,

Xiang-Jun

10

RNA structures (DSSR) / Re: License requested

« Last post by xiangjun on April 24, 2026, 07:13:13 am »

Hi Changdong,

Thanks for reaching out. You should now be able to see the Download link at the very top of the forum.

Due to a high volume of spam, I have implemented a filter for registered users. Although your account was created in 2018, it remained in a "Pending" category because you had not yet posted on the 3DNA Forum. Once a user's first post is approved, the Download link becomes visible automatically.

Best regards,

Xiang-Jun