---
name: "pdb2cif"
section: "1"
platform: "linux"
package: "cif-tools"
version: "1.0.12-4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/pdb2cif"
---

# pdb2cif(1)

Convert the content of a PDB file into mmCIF format

## NAME

pdb2cif - Convert the content of a PDB file into mmCIF format

## SYNOPSIS

pdb2cif \[OPTION\] input \[output\]

## DESCRIPTION

This tools attempts to write out the contents of a PDB file in mmCIF format.

The conversion of a PDB file into mmCIF format is not trivial. The numbering schemes differ and in some cases it is even necessary to do a sequence alignment to recover correct sequence numbers.

When **CCP4** is installed and sourced correctly, this tool will use the information in the **CCP4** monomers library to guide the construction of a correct mmCIF file. In the absence of **CCP4** a best effort is done.

## OPTIONS

If no output file is given, the result is printed to /fIstdout. Both input and output files can be compressed.

- **--dict**=\<file\>

  Specify a dictionary file containing restraints for residues specific to this file.

- **--validate**

  Validate the file before writing the output.

- **--verbose**,**-V**

  Be more verbose, useful to diagnose validation errors.

## AUTHOR

Written by Maarten L. Hekkelman \<maarten@hekkelman.com\>

## REPORTING BUGS

Report bugs at https://github.com/PDB-REDO/cif-tools/issues

## SEE ALSO

**cif-diff**, **cif-grep**, **cif-merge**,  **cif-validate**, **cif2pdb**, **mmCQL**.