Contacts of the helix formed by residues 830 - 838 (chain A) in PDB entry 1M8X
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with SER 830 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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829A ARG* 1.3 74.7 - - - +
831A ARG* 1.3 54.3 + - - +
832A LEU 3.5 2.1 + - - -
833A LEU* 3.2 14.8 + - - +
834A GLU* 2.7 36.7 + - - +
852A HIS* 3.5 19.6 + - - -
855A GLU* 2.7 34.9 + - - -
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Residues in contact with ARG 831 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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830A SER* 1.3 75.2 - - - +
832A LEU* 1.3 54.3 + - - +
834A GLU* 3.1 7.4 - - - +
835A ASP* 2.7 61.8 + - - +
840A ARG* 5.4 3.0 - - - +
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Residues in contact with LEU 832 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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830A SER* 3.3 7.3 + - - +
831A ARG* 1.3 80.0 - - - +
833A LEU* 1.3 64.7 + - - +
835A ASP* 3.2 6.2 + - - +
836A PHE* 2.9 22.3 + - - +
841A TYR* 3.7 33.2 - - + +
844A LEU* 4.8 9.6 - - + -
848A GLU 3.8 19.1 - - - +
849A ILE* 4.0 12.6 - - + -
852A HIS* 3.2 42.1 - - + +
856A PHE* 4.2 8.5 - - + -
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Residues in contact with LEU 833 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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829A ARG* 4.3 14.8 - - + -
830A SER* 3.2 16.8 + - - +
832A LEU* 1.3 79.2 - - - +
834A GLU* 1.3 64.4 + - - +
836A PHE* 3.0 15.7 + - + +
837A ARG* 2.9 33.8 + - + +
855A GLU* 3.4 41.1 - - + +
856A PHE* 3.8 31.6 - - + -
859A ASP* 3.7 36.3 - - + +
862A GLY* 4.8 0.2 - - - -
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Residues in contact with GLU 834 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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829A ARG* 3.4 39.1 + - - +
830A SER 2.7 24.2 + - - +
831A ARG* 3.1 10.5 - - - +
833A LEU* 1.3 74.6 - - - +
835A ASP* 1.3 64.9 + - - +
837A ARG* 3.2 9.8 + - - +
838A ASN* 3.1 36.2 + - - +
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Residues in contact with ASP 835 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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831A ARG* 2.7 46.2 + - - +
832A LEU* 3.7 1.3 + - - +
834A GLU* 1.3 75.7 - - - +
836A PHE* 1.3 60.5 + - - +
838A ASN* 3.4 14.8 + - - +
839A ASN 3.5 0.2 + - - -
840A ARG* 3.1 70.0 + - - +
841A TYR* 3.7 21.2 + - + -
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Residues in contact with PHE 836 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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832A LEU 2.9 13.8 + - - +
833A LEU* 3.0 22.2 + - + +
835A ASP* 1.3 75.1 - - - +
837A ARG* 1.3 68.5 + - - +
839A ASN* 3.2 13.9 + - - +
840A ARG 4.4 1.3 + - - +
841A TYR* 4.3 23.3 - - + +
844A LEU* 3.6 22.2 - - + -
856A PHE* 3.9 18.6 - + + -
861A HIS* 3.7 35.2 - - + -
862A GLY* 4.1 2.0 - - - -
865A PHE* 3.8 38.8 - + + -
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Residues in contact with ARG 837 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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829A ARG* 2.8 50.6 - - - +
833A LEU* 2.9 29.0 + - + +
834A GLU* 3.6 10.8 - - - +
836A PHE* 1.3 75.9 - - + +
838A ASN* 1.3 57.7 + - - +
839A ASN* 2.8 29.3 + - - +
859A ASP* 2.8 31.7 + - - +
860A GLN* 5.1 3.4 - - - +
861A HIS* 3.4 38.2 + - - +
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Residues in contact with ASN 838 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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834A GLU* 3.1 27.1 + - - +
835A ASP* 3.6 12.4 + - - +
836A PHE 3.2 0.2 - - - -
837A ARG* 1.3 76.2 - - - +
839A ASN* 1.3 70.1 + - - +
840A ARG* 3.3 6.4 + - + +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il