1rlr

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PDB ID 1rlr

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, resolution 2.5Å
Activity: Ribonucleoside-diphosphate reductase, with EC number 1.17.4.1
Coordinates: save as pdb, mmCIF, xml



STRUCTURE OF RIBONUCLEOTIDE REDUCTASE PROTEIN R1


Overview

Ribonucleotide reductase is the only enzyme that catalyses de novo formation of deoxyribonucleotides and is thus a key enzyme in DNA synthesis. The radical-based reaction involves five cysteins. Two redox-active cysteines are located at adjacent antiparallel strands in a new type of ten-stranded alpha/beta-barrel, and two others at the carboxyl end in a flexible arm. The fifth cysteine, in a loop in the centre of the barrel, is positioned to initiate the radical reaction.

About this Structure

1RLR is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Structure of ribonucleotide reductase protein R1., Uhlin U, Eklund H, Nature. 1994 Aug 18;370(6490):533-9. PMID:8052308

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