31SS | pdb_000031ss

Crystal structure of Cysteine Desulfurase domain of Molybdopterin-dependent Ergothioneine Synthase

PDB DOI: https://doi.org/10.2210/pdb31SS/pdb

Classification: TRANSFERASE
Organism(s): Caldithrix abyssi
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2026-06-22 Released: 2026-11-04
Deposition Author(s): Bolotova, S.B., Seebeck, F.P.
Funding Organization(s): Swiss Nanoscience Institute

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.62 Å
R-Value Free:
0.231 (Depositor), 0.233 (DCC)
R-Value Work:
0.185 (Depositor), 0.185 (DCC)
R-Value Observed:
0.186 (Depositor)

Starting Model: in silico
View more details

wwPDB Validation 3D Report Full Report

Validation slider image for 31SS

This is version 1.0 of the entry. See complete history.

Literature

Crystal structure of Cysteine desulfurase from Caldithrix abyssi

Suryatin Alim, G., Bolotova, S.B., Seebeck, F.P.

To be published.

Macromolecule Content

Total Structure Weight: 86.88 kDa
Atom Count: 6,712
Modeled Residue Count: 778
Deposited Residue Count: 788
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Metallopterin-dependent ergothioneine synthase	A, B	394	Caldithrix abyssi	Mutation(s): 0 Gene Names: ENK44_09415 EC: 2.8.1
UniProt
Find proteins for A0A7V4WV16 (Caldithrix abyssi) Explore A0A7V4WV16 Go to UniProtKB: A0A7V4WV16
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	A0A7V4WV16
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
CL Query on CL Download:Ideal Coordinates CCD File SDF format, chain F [auth B] SDF format, chain E [auth B] SDF format, chain D [auth A] SDF format, chain C [auth A] MOL2 format, chain F [auth B] MOL2 format, chain E [auth B] MOL2 format, chain D [auth A] MOL2 format, chain C [auth A] mmCIF format, chain F [auth B] mmCIF format, chain E [auth B] mmCIF format, chain D [auth A] mmCIF format, chain C [auth A]	C [auth A], D [auth A], E [auth B], F [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth B] Focus chain F [auth B] Interactions & Density Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth B] Focus chain F [auth B]

Modified Residues 1 Unique
ID	Chains	Modified Residue	Modification Type	Formula	2D Diagram
LLP Query on LLP	A, B	LYS	Pyridoxal phosphate	C₁₄ H₂₂ N₃ O₇ P

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.62 Å
R-Value Free: 0.231 (Depositor), 0.233 (DCC)
R-Value Work: 0.185 (Depositor), 0.185 (DCC)
R-Value Observed: 0.186 (Depositor)

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.182	α = 90
b = 83.716	β = 96.66
c = 98.41	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
DIALS	data scaling
DIALS	data reduction
PHASER	phasing

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-11-04

Deposition Author(s):

Funding Organization	Location	Grant Number
Swiss Nanoscience Institute	Switzerland	P2104

Revision History (Full details and data files)

Version 1.0: 2026-11-04
Type: Initial release