CaBP Data Library General Information

Myosin Regulatory Light Chain

Primary information about myosin regulatory light chain:
Basic chemical and physical information
Basic biological information
Basic genomic information
Metal ion binding constants
Interspecies sequence alignment
Information on function
Summary of structural studies
Information on the conformational change List of available structures Information about mutations
References about myosin regulatory light chain Other web resources about myosin regulatory light chain
Additional information about myosin regulatory light chain:
Information about the evolutionary relationships of the myosin regulatory light chain and other proteins






Basic Information

Additional names and abbreviations: myosin regulatory light chain: myosin DTNB light chain; myosin light chain-2
Isoforms: RLC 1
RLC 2
RLC 2 major smooth muscle isoform
RLC 2 minor smooth muscle isoform
RLC 2 non-sarcomeric isoform
RLC 2 skeletal muscle isoform type 1
RLC 2 skeletal muscle isoform type 2
RLC 2 ventricular isoform type
RLC 2A cardiac muscle isoform
RLC 2A smooth muscle isoform
RLC 2B cardiac muscle isoform
RLC 2B smooth muscle isoform
RLC nonmuscle isoform
lower animal smooth muscle isoform
lower animal striated muscle isoform
superfast RLC 2
Yeast Protein Database Entries: No links to the YPD are stored in the database


Basic Chemical and Physical Information:
Number of amino acids: RLC 1: 147 (Physarum polycephalum) - 221 (Drosophila melanogaster)
RLC 2: 170 (all species)
RLC 2 major smooth muscle isoform: 171 (all species)
RLC 2 minor smooth muscle isoform: 170 (Rattus norvegicus) - 171 (Gallus gallus)
RLC 2 non-sarcomeric isoform: 170 (all species)
RLC 2 skeletal muscle isoform type 1: 164 (Homo sapiens) - 169 (Oryctolagus cuniculus)
RLC 2 skeletal muscle isoform type 2: 166 (Gallus gallus) - 169 (Oryctolagus cuniculus)
RLC 2 ventricular isoform type: 164 (Homo sapiens) - 165 (Rattus norvegicus, Mus musculus)
RLC 2A cardiac muscle isoform: 164 (all species)
RLC 2A smooth muscle isoform: 161 (Patinopecten yessoensis) - 171 (Rattus norvegicus, Sus scrofa, Homo sapiens)
RLC 2B cardiac muscle isoform: 163 (all species)
RLC 2B smooth muscle isoform: 156 (Patinopecten yessoensis) - 171 (Rattus norvegicus)
RLC nonmuscle isoform: 174 (all species)
lower animal smooth muscle isoform: 153 (all species)
lower animal striated muscle isoform: 156 (Patinopecten yessoensis, Aequipecten irradians, Chlamys nipponensis akazar) - 195 (Lumbricus terrestris)
superfast RLC 2: 173 (all species)
View a list of all sources stored in the database
Molecular weight: RLC 1: 16.081 kD (Physarum polycephalum) - 23.583 kD (Drosophila melanogaster)
RLC 2: 18.603 kD (all species)
RLC 2 major smooth muscle isoform: 19.714 kD (all species)
RLC 2 minor smooth muscle isoform: 19.589 kD (Rattus norvegicus) - 19.78 kD (Gallus gallus)
RLC 2 non-sarcomeric isoform: 19.663 kD (all species)
RLC 2 skeletal muscle isoform type 1: 18.601 kD (Homo sapiens) - 18.897 kD (Oryctolagus cuniculus)
RLC 2 skeletal muscle isoform type 2: 18.637 kD (Gallus gallus) - 18.895 kD (Oryctolagus cuniculus)
RLC 2 ventricular isoform type: 18.601 kD (Homo sapiens) - 18.751 kD (Mus musculus)
RLC 2A cardiac muscle isoform: 18.574 kD (all species)
RLC 2A smooth muscle isoform: 18.384 kD (Patinopecten yessoensis) - 19.764 kD (Rattus norvegicus)
RLC 2B cardiac muscle isoform: 18.587 kD (all species)
RLC 2B smooth muscle isoform: 17.621 kD (Patinopecten yessoensis) - 19.707 kD (Rattus norvegicus)
RLC nonmuscle isoform: 19.954 kD (all species)
lower animal smooth muscle isoform: 17.272 kD (all species)
lower animal striated muscle isoform: 17.499 kD (Chlamys nipponensis akazar) - 21.945 kD (Lumbricus terrestris)
superfast RLC 2: 19.403 kD (Felis silvestris catus) - 19.534 kD (Homo sapiens)
View a list of all sources stored in the database
pI: not yet available in the data library
Number of functional calcium binding sites: not yet available in the data library
Macroscopic calcium binding constants: not yet available in the data library
Other metal binding constants: not yet available in the data library
Protein stability: not yet available in the data library
Post-translational modifications: not yet available in the data library


Basic Biological Information:
Source organisms: RLC 1: Caenorhabditis elegans, Dictyostelium discoideum, Drosophila melanogaster, Patinopecten sp., Physarum polycephalum, Spisula sachalinensis, Todarodes pacificus
RLC 2: Caenorhabditis elegans
RLC 2 major smooth muscle isoform: Gallus gallus
RLC 2 minor smooth muscle isoform: Gallus gallus, Rattus norvegicus
RLC 2 non-sarcomeric isoform: Homo sapiens
RLC 2 skeletal muscle isoform type 1: Homo sapiens, Mus musculus, Oryctolagus cuniculus, Rattus norvegicus
RLC 2 skeletal muscle isoform type 2: Gallus gallus, Mus musculus, Oryctolagus cuniculus, Rattus norvegicus
RLC 2 ventricular isoform type: Homo sapiens, Mus musculus, Rattus norvegicus
RLC 2A cardiac muscle isoform: Gallus gallus
RLC 2A smooth muscle isoform: Homo sapiens, Patinopecten yessoensis, Sus scrofa, Rattus norvegicus
RLC 2B cardiac muscle isoform: Gallus gallus
RLC 2B smooth muscle isoform: Patinopecten yessoensis, Rattus norvegicus
RLC nonmuscle isoform: Drosophila melanogaster
lower animal smooth muscle isoform: Halocynthia roretzi
lower animal striated muscle isoform: Chlamys nipponensis akazar, Lumbricus terrestris, Patinopecten yessoensis, Aequipecten irradians
superfast RLC 2: Felis silvestris catus, Homo sapiens
View an annotated list of all sources stored in the database
Tissues: not yet available in the data library
Subcellular localization: not yet available in the data library
Regulation: not yet available in the data library


Genomic Information:
GenBank entries: not yet available in the data library
Gene length: not yet available in the data library
Gene structure: not yet available in the data library
Promoter: not yet available in the data library
Gene copies: not yet available in the data library
Alleles: no alleles are currently stored in the data library
Chromosomal localization: not yet available in the data library

Interspecies Sequence Alignment




                                  |-helixI-|--loop1----|helixII|
                                   En**nn**nX-*Y*Z-G#Ix**zn**nn*n

Lower animal striated muscle isoform:

SCALLOP :1       ADKAASGVLTKLPQKQIQEMKEAFSMID-VDRD-GFVSKEDIKAISEQ 46

                      |helixIII|----loop2----|helixIV| 
                       En**nn**n--X*Y*ZG#Ix**zn**nn*n 

Lower animal striated muscle isoform:

SCALLOP :47    LGRAPDDKELTAML-----KEAPGPLNFTMFLSIFSDK 79

                                  |-helixI-|--loop1----|helixII|
                                   En**nn**nX-*Y*Z-G#Ix**zn**nn*n

Lower animal striated muscle isoform:

SCALLOP :80                LSGTDSEETIRNAFAMFD-EQET-KKLNIEYIKDLLEN 115

                      |helixIII|----loop2----|helixIV| 
                       En**nn**n--X*Y*ZG#Ix**zn**nn*n 

Lower animal striated muscle isoform:

SCALLOP :116   MGDNFNKDEMRMTFKEA--PVE-GGKFDYVKFTAMIKGSGEEEA 156



Sequence alignment of the entire calmodulin subfamily

Functional Information:

General information:

Biological roles:

Disease states:

Target molecules:


Structural Information:

Calcium-coordination:
not yet available in the data library


Nature of the conformational changes:
not yet available in the data library


Secondary structure:
(as reported in the PDB file and its accompanying reference)
not yet available in the data library


Additional structural information:


Available structures:
(follow the links from the PDB code to the retrieve the
PDB files)
Other Metal Bound Structures:
1WDC: lower animal striated muscle isoform, Aequipecten irradians, regulatory domain, pH 7
Crystal structure, 2 angstrom resolution, R-value = 19.85, R-free = 27.97
1 Mg ion bound , bound to 1 equivalentsof the following portion of myosin II heavy chain: residues 774 through 837, a proteolytically stable fragment when complexed with light chains, 1 equivalentsof the following portion of myosin II heavy chain: residues 774 through 837, a proteolytically stable fragment when complexed with light chains
(InfoCard)
1SCM: lower animal striated muscle isoform, Aequipecten irradians, regulatory domain, pH 7
Crystal structure, 2.8 angstrom resolution, R-value = 20.1
1 Mg ion bound , bound to 1 equivalentsof the following portion of myosin II heavy chain: residues 774 through 837, a proteolytically stable fragment when complexed with light chains, 1 equivalentsof the following portion of myosin II heavy chain: residues 774 through 837, a proteolytically stable fragment when complexed with light chains
(InfoCard)

Information about mutants: