Contacts of the strand formed by residues 922 - 925 (chain C) in PDB entry 3CMM
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 LYS 922 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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918C GLU* 3.4 2.5 - - - -
919C TYR* 3.1 58.6 + - + +
920C ASN* 2.8 8.7 + - + +
921C ASN* 1.3 79.2 - - - +
923C LYS* 1.3 71.4 + - - +
949C ASP 4.9 5.5 + - - -
950C GLU* 2.8 30.2 + - - +
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Residues in contact with LYS 923 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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916C LYS* 4.4 24.7 - - + -
917C GLY 3.5 13.5 - - - +
918C GLU* 4.9 13.5 + - + +
921C ASN 3.9 3.9 + - - +
922C LYS* 1.3 82.8 - - - +
924C TYR* 1.3 68.9 + - - +
929C ASP* 4.9 0.5 - - - +
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Residues in contact with TYR 924 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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916C LYS* 3.5 9.6 - - - +
917C GLY* 2.8 54.1 + - - -
918C GLU* 3.4 17.3 - - - -
919C TYR* 3.9 22.7 - + + +
923C LYS* 1.3 78.0 - - - +
925C ASP* 1.3 68.1 + - - +
926C LYS* 3.5 35.9 - - + +
929C ASP* 3.5 11.2 - - + +
1016C GLU* 3.5 29.2 + - + +
1017C VAL* 3.3 21.2 + - - -
1018C PRO* 3.3 38.4 - - + -
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Residues in contact with ASP 925 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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581C ARG* 3.6 14.6 - - + +
914C SER* 2.8 29.3 + - - -
915C PRO 4.1 2.5 - - - -
916C LYS* 3.5 14.5 - - - -
924C TYR* 1.3 77.0 - - - +
926C LYS* 1.3 63.2 + - - +
927C ILE 2.9 12.3 + - - -
928C TRP* 2.9 41.3 + - + -
929C ASP* 2.7 49.1 + - - +
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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