Contacts of the strand formed by residues 501 - 504 (chain A) in PDB entry 4N41
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 LEU 501 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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461A GLN* 5.5 1.0 - - + +
493A ALA 3.4 3.8 - - - +
494A VAL* 3.4 37.2 - - + -
499A GLY 3.4 10.1 + - - +
500A HIS* 1.3 77.6 - - - +
502A LEU* 1.3 63.3 + - - +
641A LEU* 4.3 15.7 - - + +
642A TYR* 5.3 0.2 - - - -
643A PRO* 3.5 39.7 - - + -
654A ALA* 5.1 2.2 - - + -
658A LEU* 4.0 17.9 - - + -
680A GLU* 3.6 19.9 - - - +
682A LEU* 3.8 25.0 - - + +
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Residues in contact with LEU 502 (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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473A LEU* 5.4 7.2 - - + -
492A CYS* 3.3 6.1 - - - +
493A ALA* 2.9 49.3 + - + +
495A GLY* 5.5 2.0 - - - +
500A HIS* 3.9 34.5 - - + +
501A LEU* 1.3 74.3 - - - +
503A TRP* 1.3 60.0 + - - +
504A THR* 4.3 4.3 - - - +
526A THR* 4.6 13.0 - - + +
529A ALA* 3.9 20.4 - - + -
530A PHE* 5.7 3.8 - - - +
658A LEU* 5.6 1.0 - - - +
679A ARG* 3.1 47.6 - - + +
680A GLU* 5.0 0.4 - - + +
682A LEU* 4.5 5.1 - - - +
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Residues in contact with TRP 503 (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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491A ALA 3.7 4.7 - - - -
492A CYS* 4.0 3.8 - - - -
502A LEU* 1.3 73.6 - - - +
504A THR* 1.3 62.0 + - - +
505A LEU* 4.0 33.2 - - + -
662A LEU* 3.9 10.1 - - + -
674A LEU* 4.0 25.6 - - + -
677A VAL* 3.5 31.4 - - + -
678A ASP 3.2 10.7 + - - -
679A ARG* 2.4 77.1 + - - +
681A LYS 2.9 28.7 + - - -
682A LEU* 4.1 3.1 - - + -
683A PHE* 3.7 17.7 - + - -
684A PHE* 3.5 31.2 - + + -
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Residues in contact with THR 504 (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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490A ALA* 3.6 7.8 - - - +
491A ALA* 2.9 38.9 + - - +
502A LEU* 4.3 2.4 - - - +
503A TRP* 1.3 75.2 + - - +
505A LEU* 1.3 74.4 + - - +
522A LEU* 3.7 20.8 - - + +
525A GLU* 3.6 28.9 - - + -
526A THR* 3.1 18.9 + - - -
662A LEU* 3.9 1.0 - - - +
679A ARG* 2.7 25.1 + - - +
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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