MYL9

Identifiers

MYL9, LC20, MLC-2C, MLC2, MRLC1, MYRL2, myosin light chain 9, MMIHS4

External IDs

OMIM: 609905 MGI: 2138915 HomoloGene: 21230 GeneCards: MYL9

Gene location (Human)

Chr.	Chromosome 20 (human)^[1]

Band	20q11.23	Start	36,541,497 bp^[1]
Band	20q11.23	End	36,551,447 bp^[1]

Gene location (Mouse)

Chr.	Chromosome 2 (mouse)^[2]

Band	2\|2 H1	Start	156,617,340 bp^[2]
Band	2\|2 H1	End	156,623,578 bp^[2]

RNA expression pattern

Bgee

Human

Mouse (ortholog)

Top expressed in

popliteal artery

right coronary artery

thoracic aorta

ascending aorta

left coronary artery

saphenous vein

gastric mucosa

left uterine tube

myometrium

urethra

Top expressed in

ascending aorta

aortic valve

atrium

cervix

blood

belly cord

calvaria

external carotid artery

left colon

pyloric antrum

More reference expression data

BioGPS

n/a

Gene ontology
Molecular function	calcium ion binding structural constituent of muscle metal ion binding
Cellular component	myosin complex cytosol muscle myosin complex
Biological process	platelet aggregation regulation of muscle contraction muscle contraction regulation of megakaryocyte differentiation
Sources:Amigo / QuickGO

Orthologs

Species

Human

Mouse

Entrez


10398


98932

Ensembl


ENSG00000101335


ENSMUSG00000067818

UniProt


P24844


Q9CQ19

RefSeq (mRNA)


NM_181526 NM_006097


NM_172118

RefSeq (protein)


NP_006088 NP_852667


NP_742116

Location (UCSC)

Chr 20: 36.54 – 36.55 Mb

Chr 2: 156.62 – 156.62 Mb

PubMed search

^[3]

^[4]

Wikidata

View/Edit Human

View/Edit Mouse

Myosin regulatory light polypeptide 9 is a protein that in humans is encoded by the MYL9 gene.^[5]

Function

Myosin, a structural component of muscle, consists of two heavy chains and four light chains. The protein encoded by this gene is a myosin light chain that may regulate muscle contraction by modulating the ATPase activity of myosin heads. The encoded protein binds calcium and is activated by myosin light chain kinase. Two transcript variants encoding different isoforms have been found for this gene.^[6]

References

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.
Szczesna-Cordary D, Guzman G, Zhao J, et al. (2005). "The E22K mutation of myosin RLC that causes familial hypertrophic cardiomyopathy increases calcium sensitivity of force and ATPase in transgenic mice". J. Cell Sci. 118 (Pt 16): 3675–83. doi:10.1242/jcs.02492. PMID 16076902. S2CID 19633613.
Deloukas P, Matthews LH, Ashurst J, et al. (2001). "The DNA sequence and comparative analysis of human chromosome 20". Nature. 414 (6866): 865–71. Bibcode:2001Natur.414..865D. doi:10.1038/414865a. PMID 11780052.
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.
Iwasaki T, Murata-Hori M, Ishitobi S, Hosoya H (2001). "Diphosphorylated MRLC is required for organization of stress fibers in interphase cells and the contractile ring in dividing cells". Cell Struct. Funct. 26 (6): 677–83. doi:10.1247/csf.26.677. PMID 11942626.
Strausberg RL, Feingold EA, Grouse LH, et al. (2002). "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.
Higashihara M, Watanabe M, Usuda S, Miyazaki K (2008). "Smooth muscle type isoform of 20 kDa myosin light chain is expressed in monocyte/macrophage cell lineage". Journal of Smooth Muscle Research = Nihon Heikatsukin Gakkai Kikanshi. 44 (1): 29–40. doi:10.1540/jsmr.44.29. PMID 18480596.
Kumar CC, Mohan SR, Zavodny PJ, et al. (1989). "Characterization and differential expression of human vascular smooth muscle myosin light chain 2 isoform in nonmuscle cells". Biochemistry. 28 (9): 4027–35. doi:10.1021/bi00435a059. PMID 2526655.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

Proteins of the cytoskeleton

Human

Microfilaments
and ABPs

Myofilament

Actins	A1 A2 B C1 G1 G2
Myosins	I MYO1A MYO1B MYO1C MYO1D MYO1E MYO1F MYO1G MYO1H) II MYH1 MYH2 MYH3 MYH4 MYH6 MYH7 MYH7B MYH8 MYH9 MYH10 MYH11 MYH13 MYH14 MYH15 MYH16 III MYO3A MYO3B V MYO5A MYO5B MYO5C VI MYO6 VII MYO7A MYO7B IX MYO9A MYO9B X MYO10 XV MYO15A XVIII MYO18A MYO18B LC MYL1 MYL2 MYL3 MYL4 MYL5 MYL6 MYL6B MYL7 MYL9 MYLIP MYLK MYLK2 MYLL1
Other	Tropomodulin 1 2 3 4 Troponin T 1 2 3 C 1 2 I 1 2 3 Tropomyosin 1 2 3 4 Actinin 1 2 3 4 Arp2/3 complex actin depolymerizing factors Cofilin 1 2 Destrin Gelsolin Profilin 1 2 Titin

Other

Intermediate
filaments

Type 1/2
(Keratin,
Cytokeratin)

Epithelial keratins (soft alpha-keratins)	type I/chromosome 17 9 10 12 13 14 15 16 17 19 20 chromosome 12 18 none 21 type II/chromosome 12 1 2A 3 4 5 6A 6B 6C 7 8
Hair keratins (hard alpha-keratins)	type I/chromosome 17 31 32 33A 33B 34 35 36 37 38 type II/chromosome 12 81 82 83 84 85 86
Ungrouped alpha	chromosome 17 23 24 25 26 27 28 39 40 chromosome 12 71 72 73 74 75 76 77 78 79 80
Not alpha	Beta-keratin

Type 3

Type 4

Type 5

Microtubules
and MAPs

Tubulins	TUBA1A TUBA1B TUBA1C TUBA3C TUBA3D TUBA3E TUBA4A TUBA8 TUBB TUBB1 TUBB2A TUBB2B TUBB2C TUBB3 TUBB4 TUBB4Q TUBB6 TUBB8 TUBG1 TUBG2 TUBGCP2 TUBGCP3 TUBGCP4 TUBGCP5 TUBGCP6 TUBD1 TUBE1
MAPs	EB1 EB2 EB3 MAP1A MAP1B MAP2 MAP4
Kinesins	KIF1A KIF1B KIF2A KIF2C KIF3B KIF3C KIF4A KIF4B KIF5A KIF5B KIF5C KIF6 KIF7 KIF9 KIF11 KIF12 KIF13A KIF13B KIF14 KIF15 KIF16B KIF17 KIF18A KIF18B KIF19 KIF20A KIF20B KIF21A KIF21B KIF22 KIF23 KIF24 KIF25 KIF26A KIF26B KIF27 KIFC1 KIFC2 KIFC3
Dyneins	axonemal: DNAH1 DNAH2 DNAH3 DNAH5 DNAH6 DNAH7 DNAH8 DNAH9 DNAH10 DNAH11 DNAH12 DNAH13 DNAH14 DNAH17 DNAI1 DNAI2 DNALI1 DNAL1 DNAL4 cytoplasmic: DYNC1H1 DYNC2H1 DYNC1I1 DYNC1I2 DYNC1LI1 DYNC1LI2 DYNC2LI1 DYNLL1 DYNLL2 DYNLRB1 DYNLRB2 DYNLT1 DYNLT3
Microtubule organising proteins	CAMSAP1 CAMSAP2 CAMSAP3 Centrin 1 Centrin 2 Centrin 3 PCM1
Microtubule severing proteins	Katanin Spastin
Other	Tau protein Dynactin DCTN1 Stathmin Tektin TEKT1 TEKT2 TEKT3 TEKT4 TEKT5 Dynamin DNM1 DNM2 DNM3