HolB

DNA pol III delta prime subunit

Identifiers

Organism

Escherichia coli
(str. K-12 substr. MG1655)

Symbol

holB

Entrez

945661

NP_415617.1

UniProt

P28631

Other data

EC number

2.7.7.7

Chromosome

genome: 1.15 - 1.16 Mb

Search for
Structures	Swiss-model
Domains	InterPro

In E. coli and other bacteria, holB is a gene that encodes the delta prime subunit of DNA polymerase III.^[1]

References

^ Dong Z, Onrust R, Skangalis M, O'Donnell M (June 1993). "DNA polymerase III accessory proteins. I. holA and holB encoding delta and delta'". J. Biol. Chem. 268 (16): 11758–65. PMID 8505303.

DNA replication (comparing prokaryotic to eukaryotic)

Prokaryotic (initiation)	Pre-replication complex dnaC Helicase dnaA dnaB T7 Primase dnaG
Eukaryotic (preparation in G1 phase)	Pre-replication complex Origin recognition complex ORC1 ORC2 ORC3 ORC4 ORC5 ORC6 Cdc6 Cdt1 Minichromosome maintenance MCM2 MCM3 MCM4 MCM5 MCM6 MCM7 Licensing factor Autonomously replicating sequence Single-strand binding protein SSBP2 SSBP3 SSBP4 RNase H RNASEH1 RNASEH2A Helicase: HFM1 Primase: PRIM1 PRIM2
Both	Origin of replication/Ori/Replicon Replication fork Lagging and leading strands Okazaki fragments Primer

Prokaryotic (elongation)	DNA polymerase III holoenzyme dnaC dnaE dnaH dnaN dnaQ dnaT dnaX holA holB holC holD holE Replisome DNA ligase DNA clamp Topoisomerase DNA gyrase Prokaryotic DNA polymerase: DNA polymerase I Klenow fragment
Eukaryotic (synthesis in S phase)	Replication factor C RFC1 Flap endonuclease FEN1 Topoisomerase Replication protein A RPA1 Eukaryotic DNA polymerase: alpha POLA1 POLA2 PRIM1 PRIM2 delta POLD1 POLD2 POLD3 POLD4 epsilon POLE POLE2 POLE3 POLE4 DNA clamp PCNA Control of chromosome duplication
Both	Movement: Processivity DNA ligase