Contacts of the strand formed by residues 875 - 878 (chain A) in PDB entry 4CAK
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 PRO 875 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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874A ASP* 1.3 28.7 - - + +
876A VAL 1.3 46.9 - - - +
921A GLN* 3.4 9.9 - - + +
923A VAL* 4.3 13.0 - - + -
644B GLU* 5.6 3.8 - - - +
664B VAL* 1.5 47.1 - - + +
682B VAL* 6.5 1.1 - - + -
684B GLU 4.1 2.9 - - - +
685B PRO* 3.6 0.7 - - + -
686B GLU* 0.8 353.7 + - + +
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Residues in contact with VAL 876 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
875A PRO* 1.3 45.3 - - - +
877A LEU* 1.3 45.6 - - - +
878A VAL* 3.1 12.5 + - + +
921A GLN 2.7 7.3 + - - +
922A PHE* 3.6 11.3 - - + -
923A VAL 3.0 20.4 + - - -
658B LYS* 4.4 1.6 - - + -
662B ASP 2.1 22.2 - - - +
663B CYS* 1.9 51.8 - - + +
664B VAL* 1.5 32.9 - - - +
686B GLU 1.1 55.4 + - - +
687B CYS* 1.7 58.1 - - + +
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Residues in contact with LEU 877 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
876A VAL 1.3 18.9 - - - -
878A VAL* 1.3 55.6 + - - +
879A SER* 3.4 2.2 + - - +
923A VAL* 3.8 22.4 - - + +
925A GLN* 3.2 24.5 - - + +
952A TRP* 5.0 4.7 - - + +
656B THR* 0.8 131.9 - - + +
657B TYR 2.7 32.1 - - - +
658B LYS* 3.0 4.5 + - - -
664B VAL* 1.1 171.7 - - + +
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Residues in contact with VAL 878 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
804A PRO* 4.6 14.0 - - + +
812A LEU* 4.2 7.9 - - + -
876A VAL* 4.0 3.6 - - + +
877A LEU* 1.3 69.3 - - - +
879A SER* 1.3 60.2 + - - +
883A ALA* 6.0 2.7 - - + -
922A PHE* 3.6 31.0 - - + -
923A VAL 3.1 10.0 + - - +
924A LEU* 3.5 21.9 - - + -
925A GLN 3.0 25.1 + - - +
658B LYS* 2.5 55.4 - - - +
664B VAL* 3.0 3.6 - - - +
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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
------------------------------------------------------------
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