Mitochondrial ribosomal protein L42

MRPL42

Available structures

Ortholog search: PDBe RCSB

List of PDB id codes
3J7Y, 3J9M

Identifiers

MRPL42, L31MT, L42MT, MRP-L31, MRP-L42, MRP-S32, MRPL31, MRPS32, PTD007, RPML31, S32MT, HSPC204, Mitochondrial ribosomal protein L42

External IDs

OMIM: 611847; MGI: 1333774; HomoloGene: 12106; GeneCards: MRPL42; OMA:MRPL42 - orthologs

Gene location (Human)

Chr.	Chromosome 12 (human)^[1]

Band	12q22	Start	93,467,514 bp^[1]
Band	12q22	End	93,516,214 bp^[1]

Gene location (Mouse)

Chr.	Chromosome 10 (mouse)^[2]

Band	10 C2\|10 49.39 cM	Start	95,316,667 bp^[2]
Band	10 C2\|10 49.39 cM	End	95,337,802 bp^[2]

RNA expression pattern

Human

Mouse (ortholog)

Top expressed in

islet of Langerhans

ganglionic eminence

rectum

sperm

endothelial cell

ventricular zone

right testis

left testis

gonad

right adrenal cortex

Top expressed in

quadriceps femoris muscle

skeletal muscle tissue

heart

muscle of thigh

right kidney

proximal tubule

yolk sac

embryo

epiblast

stomach

More reference expression data


More reference expression data

Gene ontology
Molecular function	structural constituent of ribosome RNA binding
Cellular component	mitochondrial inner membrane plasma membrane ribosome mitochondrion mitochondrial small ribosomal subunit mitochondrial large ribosomal subunit
Biological process	mitochondrial translational elongation mitochondrial translational termination protein biosynthesis
Sources:Amigo / QuickGO

Species

Human

Mouse


28977


67270


ENSG00000198015


ENSMUSG00000062981


Q9Y6G3


Q9CPV3

RefSeq (mRNA)


NM_014050 NM_172177 NM_172178


NM_026065 NM_001359476 NM_001359477

RefSeq (protein)


NP_054769 NP_751917


NP_080341 NP_001346405 NP_001346406

Location (UCSC)

Chr 12: 93.47 – 93.52 Mb

Chr 10: 95.32 – 95.34 Mb

PubMed search

^[3]

^[4]

View/Edit Human

View/Edit Mouse

28S ribosomal protein L42, mitochondrial is a protein that in humans is encoded by the MRPL42 gene.^[5]^[6]^[7]

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.^[7]

References

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000198015 – Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000062981 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ 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. CiteSeerX 10.1.1.501.8919. doi:10.1074/jbc.M100727200. PMID 11279123.
^ 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.
^ ^a ^b "Entrez Gene: MRPL42 mitochondrial ribosomal protein L42".

Further reading

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. Bibcode:2002PNAS...9916899M. 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. hdl:11858/00-001M-0000-0010-8592-0. PMID 16169070. S2CID 8235923.

Protein biosynthesis: translation (bacterial, archaeal, eukaryotic)

Proteins

Initiation factor

eIF1	eIF1 B SUI1 family eIF1A Y
eIF2	α kinase β γ eIF2A eIF2B 1 2 3 4 5 eIF2D
eIF3	A B C D E F G H I J K L M
eIF4	A 1 2 3 E1 2 3 G 1 2 3 B H
eIF5	EIF5 EIF5A 2 5B
eIF6	EIF6

Elongation factor

Bacterial/Mitochondrial	EF-Tu EF-Ts EF-G EF-4 EF-P TSFM GFM1 GFM2
Archaeal/Eukaryotic	a/eEF-1 A1 2 3 B P1 P2 P3 D E G a/eEF-2

Class 1
- eRF1
Class 2/RF3
- GSPT1
- GSPT2

Ribosomal Proteins

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

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

Ribosomal RNA / ribosome subunits

5S
23S

16S

5S
23S

16S

Cytoplasmic (80S)	Large (60S): 5S 5.8S 28S Small (40S): 18S
Mitochondrial (55S)	Large (28S): MT-RNR2, 16S MT-tRNA^Val Small (39S): MT-RNR1, 12S
Chloroplast (70S)	Large (50S): 5S 4.5S 23S Small (30S): 16S

Ribosomal proteins

(See article table)

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