Warning You are using a web browser that we do not support. Our website will not work properly. Please update to a newer version or download a new web browser, such as Chrome or Firefox.

Help

Help

RCSB PDB

Deposit
- PDBx/mmCIF file
- pdb_extract
- SF-Tool
- Ligand Expo
- MAXIT
- Validation Server
- Validation API
- Information for Journals
- Validation Task Forces
- wwPDB OneDep System
- PDB-IHM
Search
Visualize
Analyze
Download
Learn
- Training Courses
- Guide to PDB Data
- Molecule of the Month
- Educational Resources
- Curricula
- Browse
- News
- SciArt Galleries
- Irving Geis
- David Goodsell
About
Careers
COVID-19

232,418 Structures from the PDB

1,068,577 Computed Structure Models (CSM)

	Include CSM
Advanced Search \| Browse Annotations		Help

Structure Summary
Structure
Annotations
Experiment
Sequence
Genome
Ligands
Versions

FASTA Sequence
mmCIF Format
mmCIF Format (Header)
PDB Format
PDB Format (Header)

FASTA Sequence
PDBx/mmCIF Format
PDBx/mmCIF Format (gz)
BinaryCIF Format (gz)
PDB Format
PDB Format (gz)
PDBML/XML Format (gz)
Structure Factors (CIF)
Structure Factors (CIF - gz)
Validation Full PDF
Validation (XML - gz)
Validation (CIF - gz)
Validation 2fo-fc coefficients (CIF - gz)
Validation fo-fc coefficients (CIF - gz)
Biological Assembly 1 (CIF - gz)
Biological Assembly 1 (PDB - gz)

1K3B

Crystal Structure of Human Dipeptidyl Peptidase I (Cathepsin C): Exclusion Domain Added to an Endopeptidase Framework Creates the Machine for Activation of Granular Serine Proteases

Help

ENTITY

4XEE_1

Endolysin, Neurotensin receptor type 1 - Rattus norvegicus, Tequatrovirus T4

About
About Us
Citing Us
Publications
Team
Careers
Usage & Privacy

Support
Contact Us
Help
Website FAQ
Glossary
Service Status

RCSB PDB is hosted by

RCSB PDB is a member of the

RCSB Partners
Nucleic Acid Knowledgebase

wwPDB Partners
RCSB PDB
PDBe
PDBj
BMRB
EMDB

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.

All questions and comments will receive a response in a timely manner.

Use this form for questions about RCSB.org and RCSB PDB services.
Please attach a screenshot when reporting an issue, if possible.
To update/release your in-progress structure depositions:
access the OneDep Communication panel
For questions/corrections to specific PDB entries, including citation updates:
email deposit-help@mail.wwpdb.org

First Name

Last Name

Subject

Question, Comment, Feedback or Other

Attach File(s)
Use CTRL or Shift keys to select more than one file ( files max)

I agree to the Help Desk Privacy Policy

Optional: To help us learn more about our users, what is your:

Institution Type

Role

Main Research Interest

Thank you for providing your feedback! Someone will be in touch with you shortly. This window will automatically close in 5 seconds.

Apologies, our feedback server is currently unavailable and we are troubleshooting the issue. In the meantime, please copy and paste the below information into an email addressed to info@rcsb.org

Prepare Data

Validate Data

Deposit Data

Help and Resources

1K3B

Crystal Structure of Human Dipeptidyl Peptidase I (Cathepsin C): Exclusion Domain Added to an Endopeptidase Framework Creates the Machine for Activation of Granular Serine Proteases