Summary: Dynein light chain type 1

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Wikipedia: Dynein
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Dynein Edit Wikipedia article

Dynein complex

Cytoplasmic dynein has two heavy chains with globular "heads" that "walk" along the microtubule, to which they are bound by the "stalks". Dynactin (not shown) may help attach the light chains to the cargo. Interactions between the "stalks" and the microtubule must repeatedly form and break (see main text for details)

Dynein is a motor protein (also called molecular motor or motor molecule) in cells which converts the chemical energy contained in ATP into the mechanical energy of movement. Dynein transports various cellular cargo by "walking" along cytoskeletal microtubules towards the minus-end of the microtubule, which is usually oriented towards the cell center. Thus, they are called "minus-end directed motors." This form of transport is known as retrograde transport. In contrast, kinesins are motor proteins that move toward the microtubules' plus end, are called plus-end directed motors.

Classification[edit]

Dynein heavy chain, N-terminal region 1

Identifiers

Symbol

DHC_N1

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe
PDBsum	structure summary

Dynein heavy chain, N-terminal region 2

Identifiers

Symbol

DHC_N2

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe
PDBsum	structure summary

Dynein heavy chain and region D6 of dynein motor

Identifiers

Symbol

Dynein_heavy

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe
PDBsum	structure summary

Dynein light intermediate chain (DLIC)

Identifiers

Symbol

DLIC

Pfam

PF05783

Pfam clan

CL0023

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe
PDBsum	structure summary

Dynein light chain type 1

structure of the human pin/lc8 dimer with a bound peptide

Identifiers

Symbol

Dynein_light

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe
PDBsum	structure summary

Dyneins can be divided into two groups: cytoplasmic dyneins and axonemal dyneins, which are also called ciliary or flagellar dyneins.

axonemal
- heavy chain: DNAH1, DNAH2, DNAH3, DNAH5, DNAH6, DNAH7, DNAH8, DNAH9, DNAH10, DNAH11, DNAH12, DNAH13, DNAH14, DNAH17
- intermediate chain: DNAI1, DNAI2
- light intermediate chain: DNALI1
- light chain: DNAL1, DNAL4

cytoplasmic
- heavy chain: DYNC1H1, DYNC2H1
- intermediate chain: DYNC1I1, DYNC1I2
- light intermediate chain: DYNC1LI1, DYNC1LI2, DYNC2LI1
- light chain: DYNLL1, DYNLL2, DYNLRB1, DYNLRB2, DYNLT1, DYNLT3

Function[edit]

Axonemal dynein causes sliding of microtubules in the axonemes of cilia and flagella and is found only in cells that have those structures.

Cytoplasmic dynein, found in all animal cells and possibly plant cells as well, performs functions necessary for cell survival such as organelle transport and centrosome assembly.^[1] Cytoplasmic dynein moves processively along the microtubule; that is, one or the other of its stalks is always attached to the microtubule so that the dynein can "walk" a considerable distance along a microtubule without detaching.

Cytoplasmic dynein probably helps to position the Golgi complex and other organelles in the cell.^[1] It also helps transport cargo needed for cell function such as vesicles made by the endoplasmic reticulum, endosomes, and lysosomes (Karp, 2005). Dynein is involved in the movement of chromosomes and positioning the mitotic spindles for cell division.^[2] Dynein carries organelles, vesicles and possibly microtubule fragments along the axons of neurons toward the cell body in a process called retrograde axoplasmic transport.^[1]

Structure[edit]

Each molecule of the dynein motor is a complex protein assembly composed of many smaller polypeptide subunits. Cytoplasmic and axonemal dynein contain some of the same components, but they also contain some unique subunits

Cytoplasmic dynein[edit]

Cytoplasmic dynein, which has a molecular mass of about 1.5 Megadaltons (MDa), contains approximately twelve polypeptide subunits: two identical "heavy chains," 520 kDa in mass, which contain the ATPase activity and are thus responsible for generating movement along the microtubule; two 74 kDa intermediate chains which are believed to anchor the dynein to its cargo; four 53-59 kDa intermediate chains and several light chains which are less understood.

The force-generating ATPase activity of each dynein heavy chain is located in its large doughnut-shaped "head", which is related to other AAA proteins, while two projections from the head connect it to other cytoplasmic structures. One projection, the coiled-coil stalk, binds to and "walks" along the surface of the microtubule via a repeated cycle of detachment and reattachment. The other projection, the extended tail (also called "stem"), binds to the intermediate and light chain subunits which attach the dynein to its cargo. The alternating activity of the paired heavy chains in the complete cytoplasmic dynein motor enables a single dynein molecule to transport its cargo by "walking" a considerable distance along a microtubule without becoming completely detached.

In eukaryotes, cytoplasmic dynein must be activated by binding of dynactin, another multisubunit protein that is essential for mitosis. Dynactin may regulate the activity of dynein, and possibly facilitates the attachment of dynein to its cargo.

Axonemal dynein[edit]

A cross-section of an axoneme, with axonemal dynein arms

Axonemal dynein come in multiple forms that contain either one, two or three non-identical heavy chains (depending upon the organism and location in the cilium). Each heavy chain has a globular motor domain with a doughnut-shaped structure believed to resemble that of other AAA proteins, a coiled coil "stalk" that binds to the microtubule, and an extended tail (or "stem") that attaches to a neighboring microtubule of the same axoneme. Each dynein molecule thus forms a cross-bridge between two adjacent microtubules of the ciliary axoneme. During the "power stroke", which causes movement, the AAA ATPase motor domain undergoes a conformational change that causes the microtubule-binding stalk to pivot relative to the cargo-binding tail with the result that one microtubule slides relative to the other (Karp, 2005). This sliding produces the bending movement needed for cilia to beat and propel the cell or other particles. Groups of dynein molecules responsible for movement in opposite directions are probably activated and inactivated in a coordinated fashion so that the cilia or flagella can move back and forth. The radial spoke has been proposed as the (or one of the) structures that synchronizes this movement.

History[edit]

The protein responsible for movement of cilia and flagella was first discovered and named dynein in 1963 (Karp, 2005). 20 years later, cytoplasmic dynein, which had been suspected to exist since the discovery of flagellar dynein, was isolated and identified (Karp, 2005).

References[edit]

^ ^a ^b ^c Gerald Karp, Kurt Beginnen, Sebastian Vogel, Susanne Kuhlmann-Krieg (2005). Molekulare Zellbiologie (in fr). Springer. ISBN 978-3-540-23857-7.
^ Kiyomitsu, Tomomi; Iain M. Cheeseman (2012-02-12). "Chromosome- and spindle-pole-derived signals generate an intrinsic code for spindle position and orientation". Nature Cell Biology. doi:10.1038/ncb2440. ISSN 1476-4679 1465-7392, 1476-4679. Retrieved 2012-02-14.

Karp G. (2005). Cell and Molecular Biology: Concepts and Experiments (4th ed.). Hoboken, NJ: John Wiley and Sons. pp. 346–358. ISBN 0-471-19279-1.
Schroer TA (2004). "Dynactin". Annu. Rev. Cell Dev. Biol. 20: 759–79. doi:10.1146/annurev.cellbio.20.012103.094623. PMID 15473859.

External links[edit]

Eukaryotic Linear Motif resource motif class LIG_Dynein_DLC8_1
The Dynein Homepage
Ron Vale's iBioSeminar on Motor Proteins
Dynein at the US National Library of Medicine Medical Subject Headings (MeSH)
EC 3.6.4.2

Proteins of the cytoskeleton

Human

Microfilaments
(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

IFs

Type 1/2
(Keratin,
Cytokeratin)

Epithelial keratins (soft alpha-keratins)	type I/chromosome 17 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 7 8 9

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

Lamin A
B

Microtubules/
MAPs

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

Other	Tau protein Dynactin DCTN1 Tubulins TUBA1A TUBA1B TUBA1C TUBA3C TUBA3D TUBA3E TUBA4A TUBA8 Stathmin Tektin TEKT1 TEKT2 TEKT3 TEKT4 TEKT5 Dynamin DNM1 DNM2 DNM3

Catenins

Membrane

Dystrophin
- Dystroglycan
Utrophin
Ankyrin
- ANK1
- ANK2
- ANK3
Spectrin
- SPTA1
- SPTAN1
- SPTB
- SPTBN1
- SPTBN2
- SPTBN4
- SPTBN5

Other

Nonhuman

See also: cytoskeletal defects B strc: edmb (perx), skel (ctrs), epit, cili, mito, nucl (chro)

Hydrolases: acid anhydride hydrolases (EC 3.6)

3.6.1

3.6.2

3.6.3-4: ATPase

3.6.3

Cu++ (3.6.3.4)	Menkes/ATP7A Wilson/ATP7B

Ca+ (3.6.3.8)	SERCA ATP2A1 ATP2A2 ATP2A3 Plasma membrane ATP2B1 ATP2B2 ATP2B3 ATP2B4 SPCA ATP2C1 ATP2C2

Na+/K+ (3.6.3.9)	ATP1A1 ATP1A2 ATP1A3 ATP1A4 ATP1B1 ATP1B2 ATP1B3 ATP1B4

H+/K+ (3.6.3.10)	ATP4A

Other P-type ATPase	ATP8B1 ATP10A ATP11B ATP12A ATP13A2 ATP13A3

3.6.4

Dynein
Kinesin
Myosin
Katanin

3.6.5: GTPase

3.6.5.1: Heterotrimeric G protein	G_αs G_αi GNAI1 GNAI2 GNAI3 G_αq/11 GNAQ GNA11 G_α12/13 GNA12 GNA13 Transducin GNAT1 GNAT2

3.6.5.2: Small GTPase > Ras superfamily	Rho family of GTPases: Cdc42 CDC42 TC10 TCL RhoUV RhoU RhoV Rac Rac1 2 3 RhoG RhoBTB 1 2 RhoH Rho A B C Rnd 1 2 3 RhoDF RhoF RhoD other: Ras HRAS KRAS NRAS Rab RAB23 RAB27 Arf ARF6 SAR1B ARL13B ARL6 Ran Rheb Rap

3.6.5.3: Protein-synthesizing GTPase	Prokaryotic IF-2 EF-Tu EF-G Eukaryotic

3.6.5.5-6: Polymerization motors	Dynamin Tubulin

B
enzm
1.1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 10
- 11
- 13
- 14
- 15-18
2.1
- 2
- 3
- 4
- 5
- 6
- 7
  - 2.7.10
  - 11-12
- 8
3.1
- - 3.1.3.48
- 2
- 3
- 4
  - 3.4.21
  - 22
  - 23
  - 24
- 5
- 6
- 7
4.1
- 2
- 3
- 4
- 5
- 6
5.1
- 2
- 3
- 4
- 99
6.1-3
- 4
- 5-6

This page is based on a Wikipedia article. The text is available under the Creative Commons Attribution/Share-Alike License.

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Dynein light chain type 1 Provide feedback

No Pfam abstract.

Literature references

Tochio H, Ohki S, Zhang Q, Li M, Zhang M; , Nat Struct Biol 1998;5:965-969.: Solution structure of a protein inhibitor of neuronal nitric oxide synthase. PUBMED:9808041 EPMC:9808041

External database links

PANDIT:	PF01221
PROSITE:	PDOC00953
Pseudofam:	PF01221
SCOP:	1bkq
SYSTERS:	Dynein_light

This tab holds annotation information from the InterPro database.

InterPro entry IPR001372

Dynein is a multisubunit microtubule-dependent motor enzyme that acts as the force generating protein of eukaryotic cilia and flagella. The cytoplasmic isoform of dynein acts as a motor for the intracellular retrograde motility of vesicles and organelles along microtubules.

Dynein is composed of a number of ATP-binding large subunits (see INTERPRO), intermediate size subunits and small subunits. Among the small subunits, there is a family of highly conserved proteins which make up this family [PUBMED:7744782, PUBMED:8628263].

Both type 1 (DLC1) and 2 (DLC2) dynein light chains have a similar two-layer alpha-beta core structure consisting of beta-alpha(2)-beta-X-beta(2) [PUBMED:10426949, PUBMED:14561217].

Gene Ontology

The mapping between Pfam and Gene Ontology is provided by InterPro. If you use this data please cite InterPro.

Cellular component	microtubule associated complex (GO:0005875)
Biological process	microtubule-based process (GO:0007017)

Domain organisation

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	Seed (75)	Full (1105)	Representative proteomes				NCBI (974)	Meta (9)
	Seed (75)	Full (1105)	RP15 (331)	RP35 (455)	RP55 (616)	RP75 (723)	NCBI (974)	Meta (9)
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¹Cannot generate PP/Heatmap alignments for seeds; no PP data available

Key: available, not generated, — not available.

Format an alignment

	Seed (75)	Full (1105)	Representative proteomes				NCBI (974)	Meta (9)
	Seed (75)	Full (1105)	RP15 (331)	RP35 (455)	RP55 (616)	RP75 (723)	NCBI (974)	Meta (9)
Alignment:
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Order:	Tree Alphabetical
Sequence:	Inserts lower case All upper case
Gaps:
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	Seed (75)	Full (1105)	Representative proteomes				NCBI (974)	Meta (9)
	Seed (75)	Full (1105)	RP15 (331)	RP35 (455)	RP55 (616)	RP75 (723)	NCBI (974)	Meta (9)
Raw Stockholm	Download	Download	Download	Download	Download	Download	Download	Download
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External links

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Curation and family details

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Curation

Seed source:

Prosite

Previous IDs:

none

Type:

Domain

Author:

Finn RD, Bateman A

Number in seed:

75

Number in full:

1105

Average length of the domain:

86.60 aa

Average identity of full alignment:

39 %

Average coverage of the sequence by the domain:

73.19 %

HMM information

HMM build commands:

build method: hmmbuild -o /dev/null HMM SEED

search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq

Model details:

Parameter	Sequence	Domain
Gathering cut-off	24.9	24.9
Trusted cut-off	25.0	25.1
Noise cut-off	24.7	24.8

Model length:

89

Family (HMM) version:

13

Download:

download the raw HMM for this family

Species distribution

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Dynein_light

Structures

For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the Dynein_light domain has been found. There are 46 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.

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Archea	Eukaryota
Bacteria	Other sequences
Viruses	Unclassified
Viroids	Unclassified sequence

Family: Dynein_light (PF01221)

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Summary: Dynein light chain type 1

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Contents

Classification[edit]

Function[edit]

Structure[edit]

Cytoplasmic dynein[edit]

Axonemal dynein[edit]

History[edit]

See also[edit]

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Dynein light chain type 1 Provide feedback

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InterPro entry IPR001372

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