Autonomous Elements

Extranuclear linear plasmids residing in the cytoplasm constitute the prevailing version of accessory genetic elements in yeast; routinely, they exist

Table 2 Yeast linear plasmids. Mitochondrial (pPH1, pPK1) and cytoplasmic linear plas-mids of ascomycetes and basidiomycetes (pTP1) are given along with their sizes (in kb) and coding capacity. DP: DNA polymerase; RP: RNA polymerase; T: toxin; I: immunity; CB: chitin binding protein; CE: capping enzyme; SSB: single-strand binding protein; TRF: terminal recognition factor. Plasmid presence is derived from data accessible from the CBS (http://www.cbs.knaw.nl/) and/or original publications on the respective plasmid system (see also Cong et al. 1994; Fukuhara 1995)

Table 2 Yeast linear plasmids. Mitochondrial (pPH1, pPK1) and cytoplasmic linear plas-mids of ascomycetes and basidiomycetes (pTP1) are given along with their sizes (in kb) and coding capacity. DP: DNA polymerase; RP: RNA polymerase; T: toxin; I: immunity; CB: chitin binding protein; CE: capping enzyme; SSB: single-strand binding protein; TRF: terminal recognition factor. Plasmid presence is derived from data accessible from the CBS (http://www.cbs.knaw.nl/) and/or original publications on the respective plasmid system (see also Cong et al. 1994; Fukuhara 1995)

Species

Plasmid system Coding capacity

No. of strains

(kb)

analyzed

(plasmids present)

Ascomycetes

Pichia heedi

pPH1 (7.1)

DP/RP

3 (2)

Pichia kluyveri

pPK1 (7.2)

DP/RP

16(3)

Kluyveromyces lactis

pGKL1 (8.9)

DP/T/I

31 (5)

pGKL2 (13.5)

DP/RP/CE/SSB/TRF

Debaryomyces hansenii

pDH1A (8.2)

DP/CBa

25(1)

pDH1B (14.4)

DP/RPb

Debaryomyces hansenii TK

pDHL1 (8.4)

DP/CBc

1 (1)

pDHL2 (9.2)

pDHL3 (15)

Pichia acaciae

pPac1-2 (6.8)

T/I

2(1)

pPac1-1 (13.6)

DP/RP/CE/SSB/TRF

Debaryomyces robertsiae

pWR1A (8.1)

T/I

2(1)

pWR1B (14.6)

DP/RP/CE/SSB/TRF

Pichia pastoris

pPP1A (9.5)

4(2)

pPP1B (13)

Candida tartarivorans

pCX1A (8)

1 (1)

pCX1B (13)

Pichia nakazawae

pPN1A (7)

2(1)

pPN1B (8)

pPN1C (15)

Pichia inositovora

pPin1-3 (9.7)

DP/T

1 (1)

pPin1-2 (13)

pPin1-1 (18)

Debaryomyces etchellsii

pPE1A (6.7)

CB

4(3)

pPE1B (12.8)

DP/RP/CE/SSB/TRF

Schwanniomyces occidentalis

pSoc1-1 (8.1)

2(1)

pSoc1-2 (13.4)

Saccharomyces kluyveri

pSKL (14)

DP/RP/CE/SSB/TRF

5(1)

Saccharomycopsis malanga

pSM2A (8.7)

2(1)

pSM2B (15)

Saccharomycopsis

pScr1-3 (5)

3 (2)

crataegensis

pScr1-2 (7)

pScr1-1 (15)

Botryoascus cladosporoides

pBC1A (7)

1 (1)

pBC1B (14)

Debaryomyces polymorphus

pDP1 (18)

1 (1)

Basidiomycetes

Trichosporon pullulans

pTP1 (16)

13 (7)

a based on heterologous hybridization with pGKL1 derived probes b based on heterologous hybridization with pGKL2 derived probes c based on partial DNA sequences mitochondrial pPK1

cytoplasmic autonomous pPac1-1

cytoplasmic non-autonomous type I pGKL1

RNApol type II pPac1-2

DNApol DNApol

DNApol helicase SSB

Immunity

RNApol

Immunity

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