Mitochondrial ribosomal protein L42

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Identifiers
Aliases|
External IDs| GeneCards: [1]
Orthologs
Species| Human| Mouse
Entrez| |

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Ensembl| |

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UniProt| |

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RefSeq (mRNA)| |

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RefSeq (protein)| |

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Location (UCSC)| n/a| n/a
PubMed search| n/a| n/a
Wikidata
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28S ribosomal protein L42, mitochondrial is a protein that in humans is encoded by the MRPL42 gene.[1][2][3]

Mammalian mitochondrial ribosomal proteins are encoded by nuclear genes and help in protein synthesis within the mitochondrion. Mitochondrial ribosomes (mitoribosomes) consist of a small 28S subunit and a large 39S subunit. They have an estimated 75% protein to rRNA composition compared to prokaryotic ribosomes, where this ratio is reversed. Another difference between mammalian mitoribosomes and prokaryotic ribosomes is that the latter contain a 5S rRNA. Among different species, the proteins comprising the mitoribosome differ greatly in sequence, and sometimes in biochemical properties, which prevents easy recognition by sequence homology. This gene encodes a protein identified as belonging to both the 28S and the 39S subunits. Further experiments will be needed to identify the specific subunit localization. Sequence analysis identified three transcript variants that encode two different isoforms. Pseudogenes corresponding to this gene are found on chromosomes 4q, 6p, 6q, 7p, and 15q.[3]

## References[edit | edit source]

1. ↑ Cavdar Koc E, Burkhart W, Blackburn K, Moseley A, Spremulli LL (May 2001). "The small subunit of the mammalian mitochondrial ribosome. Identification of the full complement of ribosomal proteins present". J Biol Chem. 276 (22): 19363–74. doi:10.1074/jbc.M100727200. PMID 11279123.
2. ↑ Zhang QH, Ye M, Wu XY, Ren SX, Zhao M, Zhao CJ, Fu G, Shen Y, Fan HY, Lu G, Zhong M, Xu XR, Han ZG, Zhang JW, Tao J, Huang QH, Zhou J, Hu GX, Gu J, Chen SJ, Chen Z (Nov 2000). "Cloning and functional analysis of cDNAs with open reading frames for 300 previously undefined genes expressed in CD34+ hematopoietic stem/progenitor cells". Genome Res. 10 (10): 1546–60. doi:10.1101/gr.140200. PMC 310934. PMID 11042152.
3. ↑ 3.0 3.1 "Entrez Gene: MRPL42 mitochondrial ribosomal protein L42".

## Further reading[edit | edit source]

* Bonaldo MF, Lennon G, Soares MB (1997). "Normalization and subtraction: two approaches to facilitate gene discovery". Genome Res. 6 (9): 791–806. doi:10.1101/gr.6.9.791. PMID 8889548.
* Wiemann S, Weil B, Wellenreuther R, et al. (2001). "Toward a catalog of human genes and proteins: sequencing and analysis of 500 novel complete protein coding human cDNAs". Genome Res. 11 (3): 422–35. doi:10.1101/gr.GR1547R. PMC 311072. PMID 11230166.
* Kenmochi N, Suzuki T, Uechi T, et al. (2001). "The human mitochondrial ribosomal protein genes: mapping of 54 genes to the chromosomes and implications for human disorders". Genomics. 77 (1–2): 65–70. doi:10.1006/geno.2001.6622. PMID 11543634.
* Koc EC, Burkhart W, Blackburn K, et al. (2001). "The large subunit of the mammalian mitochondrial ribosome. Analysis of the complement of ribosomal proteins present". J. Biol. Chem. 276 (47): 43958–69. doi:10.1074/jbc.M106510200. PMID 11551941.
* Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
* Zhang Z, Gerstein M (2003). "Identification and characterization of over 100 mitochondrial ribosomal protein pseudogenes in the human genome". Genomics. 81 (5): 468–80. doi:10.1016/S0888-7543(03)00004-1. PMID 12706105.
* Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
* Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
* Stelzl U, Worm U, Lalowski M, et al. (2005). "A human protein-protein interaction network: a resource for annotating the proteome". Cell. 122 (6): 957–68. doi:10.1016/j.cell.2005.08.029. PMID 16169070.

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Protein biosynthesis: translation (bacterial, archaeal, eukaryotic)

Proteins|

| Initiation factor|

| Bacterial|

* PIF-1
* PIF-2
* PIF-3

|

Archaeal|

* aIF1
* aIF2
* aIF5
* aIF6

Eukaryotic|

| eIF1|

* eIF1
* EIF1AX
* AY
* 1B

|

eIF2|

* EIF2S1
* EIF2S2
* EIF2S3
* EIF2B1
* EIF2B2
* EIF2B3
* EIF2B4
* EIF2B5
* EIF-2 kinase
* eIF2A
* eIF2D

eIF3|

* EIF3A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M

eIF4|

* EIF4A2
* A3
* B
* E1
* E2
* E3
* G1
* G2
* G3
* H

eIF5|

* EIF5
* EIF5A
* A2
* 5B

eIF6|

* EIF6

Elongation factor|

| Bacterial|

* EF-Tu
* EF-Ts
* EF-G

|

Archaeal|

* aEF-1
* aEF-2

Eukaryotic|

* EEF-1
* EEF1A1
* EEF1A2
* EEF1A3
* EEF1B1
* EEF1B2
* EEF1B3
* EEF1B4
* EEF1D
* EEF1E1
* EEF1G
* EEF2

Release factor|

* Bacterial
* Archaeal
* Eukaryotic (ETF1)

Ribosomal Proteins|

| Cytoplasmic|

| 60S subunit|

* RPL3
* RPL4
* RPL5
* RPL6
* RPL7
* RPL7A
* RPL8
* RPL9
* RPL10
* RPL10A
* RPL10-like
* RPL11
* RPL12
* RPL13
* RPL13A
* RPL14
* RPL15
* RPL17
* RPL18
* RPL18A
* RPL19
* RPL21
* RPL22
* RPL23
* RPL23A
* RPL24
* RPL26
* RPL27
* RPL27A
* RPL28
* RPL29
* RPL30
* RPL31
* RPL32
* RPL34
* RPL35
* RPL35A
* RPL36
* RPL36A
* RPL37
* RPL37A
* RPL38
* RPL39
* RPL40
* RPL41
* RPLP0
* RPLP1
* RPLP2
* RRP15-like
* RSL24D1

|

40S subunit|

* RPSA
* RPS2
* RPS3
* RPS3A
* RPS4 (RPS4X, RPS4Y1, RPS4Y2)
* RPS5
* RPS6
* RPS7
* RPS8
* RPS9
* RPS10
* RPS11
* RPS12
* RPS13
* RPS14
* RPS15
* RPS15A
* RPS16
* RPS17
* RPS18
* RPS19
* RPS20
* RPS21
* RPS23
* RPS24
* RPS25
* RPS26
* RPS27
* RPS27A
* RPS28
* RPS29
* RPS30
* RACK1

Mitochondrial|

| 39S subunit|

* MRPL1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9
* 10
* 11
* 12
* 13
* 14
* 15
* 16
* 17
* 18
* 19
* 20
* 21
* 22
* 23
* 24
* 25
* 26
* 27
* 28
* 29
* 30
* 31
* 32
* 33
* 34
* 35
* 36
* 37
* 38
* 39
* 40
* 41
* 42

|

28S subunit|

* MRPS1
* 2
* 3
* 4
* 5
* 6
* 7
* 8
* 9
* 10
* 11
* 12
* 13
* 14
* 15
* 16
* 17
* 18
* 19
* 20
* 21
* 22
* 23
* 24
* 25
* 26
* 27
* 28
* 29
* 30
* 31
* 32
* 33
* 34
* 35

Other concepts|

* Aminoacyl tRNA synthetase
* Reading frame
* Start codon
* Stop codon
* Shine-Dalgarno sequence/Kozak consensus sequence

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Ribosomal RNA / ribosome subunits

Archaea|

* Large:

* Small:

Bacteria (70S)|

* Large:
* 50S
* 5S
* 23S

* Small:
* 30S
* 16S

Eukaryotes (80S)|

| Cytoplasmic|

* Large:
* 60S
* 5S
* 5.8S
* 28S

* Small:
* 40S
* 18S

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Mitochondrial|

* Large:
* MT-RNR2, 16S

* Small:
* MT-RNR1, 12S

Chloroplast|

* Large chloroplast subunit

* Small chloroplast subunit

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